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Radio device

Tue, 10 Nov 2015 08:00:00 EST

According to one embodiment, a radio device includes: a mounting board having a conductive plane; a semiconductor package mounted on the mounting board and having a interposer having a conductive plane, a semiconductor chip mounted on one surface of the interposer, and an antenna having a conductive element formed on the one surface and connected to the semiconductor chip; and a plurality of connection portions connecting the mounting board and the interposer. A first electrical length of the first connection portion which is nearest the conductive element among the plurality of connection portions or a second electrical length of the first connection portion including a conductive plane of the mounting board or interposer connected to the first connection portion is less than ½ wavelength of the operating frequency of the antenna.



Antenna

Tue, 15 Sep 2015 08:00:00 EDT

An antenna includes antenna coil having a magnetic-material. core and a coil conductor. The antenna coil is arranged toward a side of a planar conductor, such as a circuit board. Of the coil conductor, a first conductor part close to a first main face of the magnetic-material core and a second conductor part close to a second main face of the magnetic-material core are provided such that the first conductor part is not over the second conductor part in view from a line in a direction normal to the first main face or the second main face of the magnetic-material core. In addition, a coil axis of the coil conductor is orthogonal to the side of the planar conductor.



Electronic device that is worn on the wrist

Tue, 08 Sep 2015 08:00:00 EDT

A wrist-worn electronic device includes an antenna that receives externally transmitted radio signals; a case of which at least part is made of a non-conductive material; an information display unit that is housed inside the case, is flat, and is made of a non-conductive material; a back cover that is attached to the case and is made of a conductive material; and a reception unit that is positioned and housed inside the case between the information display unit and the back cover, and processes a reception signal based on radio signals received by the antenna. The antenna has an antenna electrode that is disposed and formed as a line around the outside of the information display unit. The back cover is connected to the ground potential of the reception unit and reflects the radio signals.



Packaged antenna and method for producing same

Tue, 11 Aug 2015 08:00:00 EDT

Electronic apparatus having an antenna chip with a substrate and an antenna structure, and a method of producing the same. The antenna chip is integrated or packaged in a package having a clip mounting surface for mounting the antenna chip, and an encapsulating material. The encapsulating material typically is a plastic mold used in the industrial packaging of integrated circuits. Between the antenna structure and the chip mounting surface, a first void is disposed in the substrate.



Dielectric chip antennas

Tue, 16 Jun 2015 08:00:00 EDT

There is disclosed an antenna arrangement having a parasitic conductive loop (1) and at least one active radiating element (9). The conductive loop (1) comprises first and second electrically conductive passive radiating elements (2, 3) each with first and second ends. The first ends of the passive radiating elements are each connected to ground, and the second ends of the radiating elements are each connected respectively to mutually discrete metalized surface regions (8) of a dielectric block (7). The at least one active radiating element (9) is not conductively connected to the passive radiating elements (2, 3). The passive radiating elements (2, 3) are configured to be fed parasitically by the at least one active radiating element (9). The antenna arrangement has excellent resistance to detuning and can be located in different regions of a PCB substrate without significantly affecting performance. Further, the antenna is small in size and may be arranged for dual band operation.



Single port dual antenna

Tue, 16 Jun 2015 08:00:00 EDT

A system for transmitting radio frequency includes antenna elements configured to transmit radio frequency beams including a horizontal beam widths and vertical beam widths. The antenna elements are positioned to transmit radio frequency in directions to cover areas independent of each other. The system includes a port operatively coupled to the antenna elements to transmit power to the antenna elements to cause the antenna elements to transmit radio frequency in the respective directions. The antenna elements and the port form a distributed antenna system.



Method, system, and apparatus having near field communication (NFC) chip with configurable memory that is updatable via a host processor

Tue, 26 May 2015 08:00:00 EDT

A wireless media player and a related system and methodology are disclosed. One aspect of the wireless media player system pertains to a virtual connector system, apparatus, and method for the automatic establishment of wireless connectivity with other electronic devices. In one embodiment, the media player device employs the use of integrated Radio Frequency Identification (RFID) technology to exchange communication settings, media capability, and other parameters with an external device that also has integrated RFID technology. The automatic exchange of settings and other information via a proximity-based RFID data exchange allows a media player to quickly establish a secure communication link with another device via a commonly supported wireless protocol such as Ultra Wideband (UWB) or Bluetooth. Another aspect of the media player system pertains to a method of using the captured media capability of the connecting device to customize certain menu options and software parameters in the media player.



Antenna with variable distributed capacitance

Tue, 26 May 2015 08:00:00 EDT

Electronic devices may be provided with antennas. An antenna may be formed from conductive antenna structures that include a frequency-dependent distributed capacitor. The antenna may include an antenna ground and an antenna resonating element that are separated by a gap. A low pass filter circuit may bridge the gap. The antenna resonating element may have antenna resonating element conductive structures that serve as first and second electrodes for the distributed capacitor. The second electrode may have first and second conductive elements coupled by a filter. The filter may be a low pass filter implemented using an inductor. The inductor may have a first terminal coupled to the first conductive element and a second terminal coupled to the second conductive element. A first antenna feed terminal may be coupled to the first conductive element and a second antenna feed terminal may be coupled to the antenna ground.



Three-dimensional multiple spiral antenna and applications thereof

Tue, 26 May 2015 08:00:00 EDT

A three-dimensional multiple spiral antenna includes a substrate, a plurality of spiral antenna sections, and a feed point module. The substrate has a three-dimensional shaped region and each spiral antenna section is supported by a corresponding section of the three-dimensional shaped region and conforms to the corresponding section of the three-dimensional shaped region such that, collectively, the spiral antenna sections have an overall shape approximating a three-dimensional shape. The feed point module is coupled to a connection point of at least one of the spiral antenna sections.



Methods and apparatus for controlling tunable antenna systems

Tue, 26 May 2015 08:00:00 EDT

An electronic device may include an adjustable power supply, at least one antenna, and associated antenna tuning circuitry. The antenna tuning circuitry may be an integral part of the antenna and may include a control circuit and at least one tunable element. The tunable element may include radio-frequency switches, continuously/semi-continuously adjustable components such as tunable resistors, inductors, and capacitors, and other load circuits that provide desired impedance characteristics. The power supply may provide power supply voltage signals to the antenna tuning circuitry via inductive coupling. The power supply voltage signals may be modulated according to a predetermined lookup table during device startup so that the control circuit is configured to generate desired control signals. These control signals adjust the tunable element so that the antenna can support wireless operation in desired frequency bands.



High-strength microwave antenna assemblies

Tue, 26 May 2015 08:00:00 EDT

Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.



RF aperture coldplate

Tue, 26 May 2015 08:00:00 EDT

An RF aperture coldplate for positioning in heat transfer proximity to heat-generating elements of an RF antenna system is presented. The RF aperture coldplate has a front side and a rear side. The RF aperture coldplate includes waveguides each forming an opening therethrough from the front side to the rear side, and passages substantially around the waveguides. The passages are configured to conduct cooling medium around the waveguides and between the front side and the rear side of the RF aperture coldplate.



High gain dish antenna with a tapered slot feed

Tue, 26 May 2015 08:00:00 EDT

A broadband antenna can include a parabolic dish having a diameter D and a radius of curvature that establishes a focal point for the parabolic dish. A tapered slot feed having a feed point can be positioned above the parabolic dish so that its effective radiation point is spaced a distance F from the center of the dish, where F is the focal length of the dish. With this configuration, feed point for the tapered slot feed can be coincident with parabolic dish focal point. The tapered slot feed can include two elements that form an exponentially tapered slot, which establishes a phase center for the tapered slot feed. A conductive bar can interconnect the two elements, in order to minimize the phase center variation during broadband operation.



Localized wave generation via modal decomposition of a pulse by a wave launcher

Tue, 26 May 2015 08:00:00 EDT

Implementations for exciting two or more modes via modal decomposition of a pulse by a wave launcher are generally disclosed.



Impedance matching method for a multiband antenna, and transmission or receiver channel having automatic matching

Tue, 26 May 2015 08:00:00 EDT

An automatic antenna impedance matching method for a radiofrequency transmission circuit. An impedance matching network is inserted between an amplifier and an antenna. The output current and voltage of the amplifier and their phase difference are measured by a variable measurement impedance, and the complex load impedance of the amplifier is deduced from this; the impedance of the antenna is calculated as a function of this complex impedance and as a function of the known current values of the impedances of the matching network. Starting from the value found for the impedance of the antenna, new values of the matching network are calculated that allow the load to be matched to the nominal impedance of the amplifier. The measurement impedance has a value controllable by the calculation processor according to the application and notably as a function of the operating frequency and of the nominal impedance of the amplifier.



Dynamic antenna pattern measurement method

Tue, 26 May 2015 08:00:00 EDT

A dynamic antenna pattern measurement method. Embodiments of the invention provide for nanosecond or better time resolution and milliradian angular resolution of the dynamic radiation pattern of an antenna under test over the predetermined solid angle scan (up to 4 π steradians) of the dynamic radiation pattern.



Thin-film antenna with power-limiting fuse

Tue, 26 May 2015 08:00:00 EDT

An antenna has a radiator formed entirely of thin film and adapted to receive and transmit radio-frequency signals, a connector also formed of thin film and adapted for connection to a transmitter, and a fuse formed of the same thin film as the radiator and connector and connected therebetween. The fuse is of a narrower width than the antenna and connector parts and so dimensioned as to melt if a radio-frequency signal greater than a predetermined magnitude is transmitted through it from the connector part to the radiator part.



Portable electronic device and hinge mechanism

Tue, 26 May 2015 08:00:00 EDT

A portable electronic device includes a casing unit, a first support unit, a second support unit, a first antenna unit, a second antenna unit, a first conducting unit and a second conducting unit. The casing unit includes a first outer casing and a second outer casing pivotally connected with the first outer casing. The first outer casing includes a hinge structure pivotally connected with the second outer casing. The first support unit includes a first support body disposed in the hinge structure, and the second support unit includes a second support body disposed in the hinge structure. The first antenna unit includes a first antenna structure disposed on the first support body and separated from the second outer casing. The second antenna unit includes a second antenna structure disposed on the second support body and separated from the second outer casing.



Radio wave receiver

Tue, 26 May 2015 08:00:00 EDT

The radio wave receiver includes the metallic case body, the metallic rear case, and the antenna inside the case body. The screw portion is formed in the metal wall of the case body. The coupling resin member having an electrical insulating property is coupled to the rear case through a great number of fine irregularities formed in the metal wall thereof. The screw portion which engages with the screw portion is formed on the coupling resin member. The case body and the rear case are coupled to each other with the screw portions. The case body and the rear case are electrically insulated from each other by the electrical insulating function of the coupling resin member so as to improve receiving sensitivity of the antenna.



Uninterrupted bezel antenna

Tue, 26 May 2015 08:00:00 EDT

A bezel forms a continuous, uninterrupted outer perimeter around the outside of a handheld radio device. The bezel is made of an electrically conductive material and is used as an antenna element. The bezel can be operated in either a common excitation mode or a differential excitation mode, depending on whether a user is presently holding the device, and making contact with the bezel.



Direct feeding apparatus for impedance matching of wireless power transmission device, and transmitter and receiver using the same

Tue, 26 May 2015 08:00:00 EDT

A direct feeding apparatus for impedance matching of a wireless power transmission device includes a helical type resonator, and a feeding unit configured to directly feed power to a region having a relatively small current value as compared to a center of a conductive line of the resonator.



Multilayered circuit type antenna package

Tue, 26 May 2015 08:00:00 EDT

A multilayered antenna package including: a radio frequency integrated circuit (RFIC) interface layer that is configured to transmit a radio frequency (RF) signal; a first dielectric layer that is disposed on the RFIC interface layer; a coplanar waveguide layer that is disposed on the first dielectric layer and is configured to receive the RF signal transmitted by RFIC layer; a second dielectric layer disposed on the coplanar waveguide layer; and an antenna portion that is disposed on the second dielectric layer and is configured to irradiate a signal that is transmitted from the coplanar waveguide layer.



Antenna device for wireless communication terminal

Tue, 19 May 2015 08:00:00 EDT

Various embodiments of an antenna device for a wireless terminal are disclosed. The antenna device includes a radiator configured to be extracted from/retracted into the wireless terminal, a L-C lumped circuit, and a noise removing coil coupled between the radiator and the L-C lumped circuit, to attenuate noise introduced through the radiator. The radiator may be configured as a helical coil or at least one meandering printed pattern so as to reduce its overall length while maintaining a desired electrical length. In embodiments, the antenna device is useful for UHF/VHF frequency bands. Multi-band configurations are disclosed. In one embodiment, a stainless steel tube member substantially surrounds a helical coil, and the tube member operates at a lower frequency band than the helical coil.



Mobile device with an underwater communications system and method

Tue, 19 May 2015 08:00:00 EDT

A mobile device with an underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a carrier signal. An electrically insulated, magnetic coupled antenna transmits the compressed, modulated signals. The receiver that has an electrically insulated, magnetic coupled antenna for receiving a compressed, modulated signal. A demodulator is provided for demodulating the signal to reveal compressed data. A de-compressor de-compresses the data. An appropriate human interface is provided to present transmitted data into text/audio/visible form. Similarly, the transmit system comprises appropriate audio/visual/text entry mechanisms. The portable device may be wearable.



Metamaterial for diverging an electromagnetic wave

Tue, 19 May 2015 08:00:00 EDT

The present disclosure relates to a metamaterial for diverging an electromagnetic wave, which comprises at least one metamaterial sheet layer. Refractive indices of the metamaterial sheet layer are distributed in a circular form with a center of the metamaterial sheet layer, and the refractive indices remain unchanged at a same radius and increase gradually with the radius. The present disclosure changes electromagnetic parameters at each point of the metamaterial through punching or by attaching man-made microstructures so that the electromagnetic wave can be diverged after passing through the metamaterial. The metamaterial of the present disclosure features a simple manufacturing process and a low cost, and is easy to be implemented. Moreover, the metamaterial of the present disclosure has small dimensions and does not occupy a large space, so it is easy to miniaturize apparatuses made of the metamaterial of the present disclosure.



Methods and apparatus for enhanced radiation characteristics from antennas and related components

Tue, 19 May 2015 08:00:00 EDT

Aspect of the present disclosure are directed to methods and apparatus producing enhanced radiation characteristics, e.g., wideband behavior, in or for antennas and related components by providing concentric sleeves, with air or dielectric material as a spacer, where the sleeves include one or more conductive layers, at least a portion of which includes fractal resonators closely spaced, in terms of wavelength. A further aspect of the present disclosure is directed to surfaces that include dual-use or multiple-use apertures. Such aperture engine surfaces can include a top (or first) layer of antenna arrays, a middle (or second) layer of a metal-fractal backplane player, and a third (or bottom) layer for solar cell or solar oriented power collection.



Modular active radiating device for electronically scanned array antennas

Tue, 19 May 2015 08:00:00 EDT

The invention concerns a device in the domain of AESA (“Active Electronically Scanned Array”) systems required for e.g. radar multifunctional systems with communication capabilities and electronic/analysis countermeasures, providing a constructive element for the realization of modular active radiating panels, which are economic and scalable depending on the system needs, to be used on multi-roles and multi-domains platforms. The architecture according to the invention presents a so-called “tile” architecture and uses a multilayer configuration incorporating the radiating elements, the control and supply controls, the transmitting/receiving (T/R) modules, the cooling system by using vertical interconnections, having a low cost and high integration.



Antenna pattern frame and mold for manufacturing electronic device case including the same

Tue, 19 May 2015 08:00:00 EDT

There is provided an antenna pattern frame including: a radiator comprising an antenna pattern portion transmitting and receiving a signal and a connection terminal portion allowing the signal to be transmitted to and received from a circuit board of an electronic device; and a radiator frame manufactured by injection molding on the radiator, allowing the antenna pattern portion to be embedded in a case of the electronic device, and supporting the radiator. The radiator frame includes a hydraulic recess introducing a resin material to a mold for manufacturing a case of the electronic device in which the radiator is embedded through injection molding, so that the radiator frame contacts the mold by injection pressure.



Display device having directional antenna

Tue, 19 May 2015 08:00:00 EDT

A display device includes a display panel and a directional antenna. The directional antenna is disposed behind or under the display panel for radiating or receiving wireless signals. The radiating path of the directional antenna is at a specific angle with respect to a horizontal plane for receiving surrounding wireless signals. Or, the signals radiated from the directional antenna may be reflected or refracted to regions above or in front of the display device by a back-side barrier or penetrate a back-side barrier which does not cause large electromagnetic degradation, thereby receiving wireless signals originated from the front-side or back-side of the display device.



Nichrome resistive active element broad band antenna

Tue, 19 May 2015 08:00:00 EDT

A nichrome resistive element is used in a closed electrical circuit to form an antenna.



Telemetry extension cable

Tue, 19 May 2015 08:00:00 EDT

The invention of the disclosure is an extension cable to connect via telemetry, an external medical device in a non-sterile zone with a medical device that is within a sterile zone. The telemetry extension cable includes a cable having a length and comprising a conductor, a first RF antenna attached at one end of the cable and a second RF antenna attached at a second end of the cable, at least one of the first or second antennas configured to transmit and receive RF signals to and from an implantable medical device.



Ferrite-loaded, Fabry-Perot cavity antenna

Tue, 19 May 2015 08:00:00 EDT

The ferrite-loaded, Fabry-Perot Cavity antenna uses a novel superstrate based beam scanning/shaping mechanism by optimally placing three magnetized ferrite cylinders within the cavity. Beam scan in a certain direction required oppositely located ferrite cylinder to be axially biased using externally controlled DC magnetizing field. The FPC utilizes a composite dielectric superstrate to inversely relate the mainlobe-to-sidelobe ratio with scan-angle, which demonstrates larger reduction in side lobe level with increases angle of beam scan. The designed 10 GHz ferrite-loaded FPC antenna has dimensions of 6.4 cm×2 cm×1.6 cm. It achieves a −10 dB impedance bandwidth of 525 MHz, directivity of 11.04 dB and a broadside beam steering range of ±12° for 200 kA/m (0.25 T) changes in the externally applied axial magnetizing field.



Miniature horn interrogator antenna with internal sum/difference combiner

Tue, 19 May 2015 08:00:00 EDT

A miniature interrogator antenna assembly including: a housing; a first miniature horn antenna in the housing having a first aperture; a second miniature horn antenna in the housing having a second aperture. The first and second miniature horn antennas are arranged in a canted configuration and are joint at a front of the assembly to form combined apertures at the front of the assembly. The antenna assembly further includes: a splitter/combiner having a matching portion, where the matching portion is positioned in the housing in such a way that an apex of the matching portion points to the front of the assembly; a plurality of annular grooves formed around the combined apertures at the front of the assembly; a sum input port coupled to a first waveguide with an H-plane bend feeding the splitter/combiner; and a difference input port coupled to a second waveguide feeding the splitter/combiner directly.



Communication electronic device and antenna structure thereof

Tue, 19 May 2015 08:00:00 EDT

A communication electronic device which comprises a grounding element and a slot antenna is provided. The slot antenna is formed by a feeding element, a first slot, a second slot, and a third slot. The first slot is an open slot, which has an open end at the first side edge and a closed end extended toward the interior of the electrical conductor. The second slot is an open slot, which also has an open end at the first side edge and a closed end extended toward the interior of the electrical conductor. The second slot is substantially parallel to the first slot and is closer than the first slot to the grounding element. The third slot is a closed slot, whose two closed ends are all in the interior of the electrical conductor. The third slot is aligned between the first slot and the second slot.



Dual-band antenna with grounded patch and coupled feed

Tue, 19 May 2015 08:00:00 EDT

Methods and systems for radiating electromagnetic energy with a patch antenna structure are described. The patch antenna structure may be formed of a metal member of the user device and is coupled to a ground plane in a first plane and is coupled to a radio frequency (RF) feed) at a portion of the patch antenna structure disposed in a second plane. The patch antenna structure is configured to radiate at an opening between the patch antenna and the ground plane.



Multi-feed diversity receive system and method

Tue, 19 May 2015 08:00:00 EDT

Embodiments disclosed herein relate to diversity receive systems and methods. An antenna system may comprise a reflector and a plurality of feed antennas configured to receive a wireless signal from a common source with directional diversity. A receive system may comprise such antenna system in combination with a plurality of receivers and/or demodulators, and in combination with a combiner and/or controller.



Concentric millimeter-waves beam forming antenna system implementation

Tue, 19 May 2015 08:00:00 EDT

An antenna implementation comprises an electromagnetic lens and at least one electromagnetically shielding member. The electromagnetic lens is adapted to guide at least one electromagnetic signal by means of at least a variation in permittivity. The at least one electromagnetically shielding member encapsulates the electromagnetic lens partially so as to direct at least one electromagnetic signal propagating through the electromagnetic lens. The at least one electromagnetically shielding member can advantageously be part of an enclosure; said enclosure encapsulates partially the electromagnetic lens. The antenna can further comprise antenna transmission means that contain wave guides. Said waveguides can advantageously be incorporated into the enclosure. The antenna is particularly suited for implementations using Substrate Integrated Waveguide techniques. SIW techniques allow miniaturization of the antenna and offer the advantage of low energy consumption as may be required in portable devices.



Built-in antenna for electronic device

Tue, 19 May 2015 08:00:00 EDT

A built-in antenna apparatus for a electronic device is provided. The antenna apparatus comprises a PCB with conductive and non-conductive areas. An antenna radiator is disposed at the non-conductive area of the PCB; the antenna radiator has a feeding portion and at least a first radiating portion configured in a first pattern branched from the feeding portion and has an end portion electrically connected to the conductive area. At least one capacitor is electrically connected in series within the first radiating portion. A resonant frequency of the first radiating portion is a function of a capacitance value of the at least one capacitor. The antenna can be provided in a smaller size for a given frequency band due to the capacitance. A second antenna radiator branched from the feeding portion can also be provided for operation at a different frequency band.



Superimposed multimode antenna for enhanced system filtering

Tue, 19 May 2015 08:00:00 EDT

In a typical system a combination of filters (BAW, SAW, etc) and an antenna are configured to achieve frequency filtering effect and efficient transmission and reception of communication signals. Wireless communication systems require specific bandwidth and out-of-band rejection; typically this metric is characterized in frequency roll-off in units of dB/MHz. This number is distributed between the antenna and filter, with the antenna contributing little to date to the filtering effect. Loss and cost penalties are incurred when multi-mode systems are designed which require additional rejection from the filter elements. Described here is a method of designing antennas to reduce the amount of rejection and complexity from the filter system. A superposition of a symmetrical frequency response from the antenna structure coupled with a non-symmetrical frequency response from a counterpoise structure generates increased rejection of out-of-band components.



Antenna apparatus for a wireless device

Tue, 19 May 2015 08:00:00 EDT

An antenna apparatus for a wireless device includes a continuous metallic component electrically connected to a circuit card assembly through an interconnection, an antenna matching circuit electrically connected to the continuous metallic component, a first electrical connection between the continuous metallic component and the interconnection, and at least one additional electrical connection between the interconnection and the circuit card assembly, the antenna matching circuit and the interconnection causing the continuous metallic component to resonate at an at least one desired frequency.



Vehicle antenna

Tue, 19 May 2015 08:00:00 EDT

An RF antenna system is provided for mounting on a window of a vehicle comprising exterior and interior window mountable portions. The first and second portions include an RF coupling section (4) to inductively couple an RF signal received from antenna (20) and a power coupling section (6) for providing external power to an external amplification portion 52 for amplifying received RF signals. The system includes a further electrical connection (16) to a metallic shim (18) which is magnetically fixed to the roof of the vehicle and electrically connected thereto, whereby the roof provides a ground plane for the antenna, by capacitive coupling of the metallic shim to the vehicle roof.



Five-band Bluetooth built-in antenna and its mobile communication terminal

Tue, 19 May 2015 08:00:00 EDT

A five-band Bluetooth built-in antenna and its mobile communication terminal provide bandwidth for communication. A built-in antenna comprises an antenna radiation unit and a first slot, a second slot and a third slot. Slots are added to approach a center frequency of a low-frequency branch part of the antenna so that the antenna generates resonance, so the low-frequency bandwidth of the antenna is increased. A high-frequency part of the antenna generates resonance by means of capacitive coupling.



Mobile communication device with improved antenna performance

Tue, 19 May 2015 08:00:00 EDT

Mobile communication devices with improved antenna performance are provided. A mobile communication device includes a first antenna, a ground plane, and a diversity antenna. In a mode of operation which is not a multi-antenna transmission mode, the diversity antenna is electrically coupled to the ground plane. The diversity antenna increases the electrical length of the ground plane and enhances the antenna performance of the radiating assembly of the first antenna in combination with the ground antenna and the diversity antenna.



Bi-directional magnetic permeability enhanced metamaterial (MPEM) substrate for antenna miniaturization

Tue, 19 May 2015 08:00:00 EDT

A bi-directional antenna includes a plurality of unit cells stacked in two perpendicular planes (Y-X and Z-X planes) to form cube shaped unit cells whereby inductive loops are placed on four faces corresponding to the Y-X and Z-X planes. Each unit cell includes a magnetic permeability enhanced metamaterial. The resulting antenna has the ability to couple magnetic fields oriented in both the X and Y directions with increased permeabilities and can be used to realize a variety of different antenna architectures that do not have their magnetic field confined in a single direction.



Antenna arrangement

Tue, 19 May 2015 08:00:00 EDT

An apparatus for antenna arrangement isolation is described. The apparatus includes a first antenna element (for example, a CMMB TV antenna) having a first radiator component and a second antenna element (for example, a cellular antenna) having a second radiator component. A first portion of the first radiator component is adjacent to a second portion of the second radiator component. The second radiator component is configured with at least one operational frequency range. The first portion of the first radiator corresponds to at least one minimum electric field region of at least one resonant frequency of the first radiator. The at least one resonant frequency of the first radiator overlaps with the at least one operational frequency range. Methods, Apparatus and Computer readable media for providing the antenna arrangement are also described.



Reader antenna and RFID electronic shelf including the same

Tue, 19 May 2015 08:00:00 EDT

A reader antenna includes dipole antennas, the dipole antennas including: a horizontal dipole antenna having the characteristic of horizontal polarization; and a dipole antenna perpendicular to the horizontal dipole antenna and including a vertical dipole antenna having the characteristic of vertical polarization, wherein the horizontal dipole antenna and the vertical dipole antenna may both have the characteristic of circular polarization. The reader antenna can be easily stored in an electronic shelf because it is realized in an ultrathin structure using a single-layered dielectric substrate.



Apparatus and method for impedance adjustment

Tue, 12 May 2015 08:00:00 EDT

A transceiver includes an antenna, an impedance adjustment device, an RF (Radio Frequency) front-end circuit, a storage device, and a processor. The antenna receives an RF signal. The impedance adjustment device is coupled to the antenna, and includes a plurality of branch circuit with different impedance values and a switch module. The processor is coupled to the RF front-end circuit and controls the switch modules. In a comparison mode, the switch module selects to connect to the branch circuits individually, and the processor detects each RSSI (Received Signal Strength Indications) value corresponding to the branch circuit and records all of the RSSI values to the storage device respectively. In the comparison mode, the processor further compares the RSSI values to for highest one. Finally, the switch module selects the branch circuit corresponding to the highest RSSI value as a transmission branch.



Transparent film for reducing electromagnetic waves and method of manufacturing the same

Tue, 12 May 2015 08:00:00 EDT

A method of manufacturing a transparent film for reducing electromagnetic waves includes forming a first dielectric layer and forming a pattern layer on the first dielectric layer. The pattern layer is made of a transparent electrode material having surface resistance.



N-shot antenna assembly and related manufacturing method

Tue, 12 May 2015 08:00:00 EDT

An antenna module and a manufacturing method for the same are disclosed. With the miniaturization trend for mobile communication terminals, the invention can achieve the miniaturization of antenna modules and facilitate the design of the antenna. The SMD as a matching component for given resonance frequency and impedance matching of the antenna is mounted on the antenna module to make the antenna module compact, and functions as a matching circuit for impedance matching to facilitate the design of mobile devices.



Antenna device and communication terminal apparatus

Tue, 12 May 2015 08:00:00 EDT

An antenna device includes an antenna element and an impedance converting circuit connected to the antenna element. The impedance converting circuit is connected to a power-supply end of the antenna element. The impedance converting circuit is interposed between the antenna element and a power-supply circuit. The impedance converting circuit includes a first inductance element connected to the power-supply circuit and a second inductance element coupled to the first inductance element. A first end and a second end of the first inductance element are connected to the power-supply circuit and the antenna, respectively. A first end and a second end of the second inductance element are connected to the antenna element and ground, respectively.