Abstract: A transceiver module and duplexer within a communication device supports a minimized antenna volume and enhances a transfer gain for transmit and receive channels. The duplexer is communicatively coupled to one of multiple antenna and filter matching configurations which include a first configuration that couples receive and transmit filter matching circuits to a single antenna matching circuit. When the duplexer is coupled to the first configuration, receive and transmit filters of the duplexer are respectively coupled to the receive filter matching circuit and the transmit filter matching circuit. As a result, the antenna matching circuit and the filter matching circuits collectively provide the enhanced transfer gain.

Abstract: An apparatus is provided. A plurality of transceiver antennas are arranged to form a phased array, where each antenna include a differential transmit antenna and a differential receive antenna arranged in a first pattern. A plurality of transceivers are arranged in a second pattern that is substantially symmetrical, and each transceiver is associated with at least one of the transceiver antennas and includes a feed network. Each feed network has a power amplifier (PA), a first matching network that is coupled between the PA and its associated transmit antenna so as to translate the phase of each differential transmit signal, a low noise amplifier (LNA), and a second matching network that is coupled between the LNA and its associated receive antenna so as to translate the phase of each differential receive signal.

Abstract: A directional notch filter for simultaneous transmit and receive of wideband signals comprises an antenna, an antenna match, a receiver, a power combiner, a first directional coupler, a second directional coupler and a shaping filter accepting a signal and producing a compensation signal as a replica of an antenna reflection transfer function, wherein the first and second directional couplers produce signals and portions of signals received by the antenna and sent to the receiver via the power combiner. The receiver can produce a receiver signal and the first directional coupler can produce a first signal as a portion of an overall signal received by the antenna, the first signal comprising at least reflection of a signal from the power amplifier and the second directional coupler samples a small portion of the receiver signal, said second directional coupler producing a second signal.

Abstract: A front end parallel resonant switch is disclosed. In an exemplary embodiment, an apparatus includes an inductor and a capacitor configured to couple a first RF transmission to an antenna, and at least one switch configured to connect the inductor to the capacitor to form a matching network when transmitting the first RF transmission from the antenna, and to connect the inductor to capacitor to form a parallel resonant circuit when transmitting a second RF transmission from the antenna.

Abstract: An antenna device includes an antenna element and an impedance conversion circuit connected to the antenna element. The impedance conversion circuit is inserted between the antenna element and a feeding circuit, and includes a first series circuit where a first coil conductor and a second coil conductor are connected in series, and a second series circuit where a third coil conductor and a fourth coil conductor are connected in series. The first and second coil conductors define a closed magnetic circuit through which a closed loop of a first magnetic flux passes, and the third and fourth coil conductors define a closed magnetic circuit through which a closed loop of a second magnetic flux passes. Consequently, the antenna device performs impedance matching with the feeding circuit in a wide frequency band.

Abstract: A communication device includes a ground element and an antenna element. The antenna element is disposed adjacent to an edge of the ground element. The antenna element includes a first metal element and a second metal element. The first metal element has a first end and a second end. The first end is coupled through a capacitive element to a communication module. The second end is coupled through a shorting element to the ground element. The second metal element has a third end and a fourth end. The third end is coupled to the communication module. The fourth end is open. The first metal element and the second metal element are adjacent to each other, but not connected to each other. The first metal element and the second metal element have projections on the edge of the ground element, wherein the projections do not overlap with each other.

Abstract: A broadband antenna for a wireless communication device includes a first feeding portion, a second feeding portion, a grounding portion, a low band radiating unit, a high band radiating unit, and a resonating unit. The low band radiating unit is connected to the first feeding portion and establishing a first current path to generate a low band frequency. The high band radiating unit is connected to the second feeding portion and establishing a second current path to generate a first high band frequency. The resonating unit is connected to the grounding portion and establishing a third current path to generate a second high band frequency. The resonating unit resonates with the high band radiating unit to generate a third high band frequency.

Abstract: An antenna structure includes a feed section, a ground section, a common section, a first radiator, a second radiator, and a third radiator. The common section is electrically connected to the feed section, and the third radiator is electrically connected to the ground section. The first radiator, the second radiator, and the third radiator are all connected to the common section. The second radiator is spaced from the third radiator to allow current to be coupled from the second radiator to the third radiator.

Abstract: Disclosed herein is an antenna feed design for transmitting or receiving a circularly polarized microwave signal, and a communication device using that antenna feed design. Resonating disks are bowl-shaped to balance E-plane and H-plane magnetic field patterns, decreasing cross-polarization, and providing mechanical rigidity. A non-planar circuit replaces planar microstrip transmission lines for transmitting the signal, with 90° phase shifts, from an input point to excitation points. This non-planar circuit overcomes some of the layout problems encountered in planar circuits. It maintains impedance matching from the input point to the excitation points by progressively tapering down the characteristic transmission line impedance of each successive section. The non-planar circuit has sufficient mechanical strength and rigidity to allow it to be supported at only two anchor points. Similarly, the non-planar disks are also of sufficient strength to require only a single anchor point each.

Abstract: Described herein are techniques related to one or more systems, apparatuses, methods, etc. for a wireless fidelity (Wi-Fi) based wireless docking station arrangement.

Abstract: A multi-band antenna includes a radiating portion, a feed portion, a ground portion, a first switch module, and a second switch module. The radiating portion includes a plurality of connecting ends. The ground portion includes two ground sections with different impedances. The first switch module connects the feed portion to a first connecting end or a second connecting end, and the second switch module connects one of the ground sections to a third connecting end or a fourth connecting end. A wireless communication device employing the multi-band antenna is also disclosed.

Abstract: When the frequency bandwidth of a high frequency signal to be amplified is changed, the linearity of a high frequency module deteriorates. A high frequency module has an amplifier circuit including an amplification transistor and a variable impedance circuit, and an output matching network. Based on an amplifying operation, the amplified high frequency signal will contain unwanted signals of secondary distortion components. In a frequency band that generates such unwanted signals of secondary distortion components, the output impedance of the amplifier circuit is changed so that the impedance will not match between the amplifier circuit and the output matching network. The output impedance of the amplifier circuit is changed by controlling the variable impedance circuit.

Abstract: An electronic component (encoder) including an operation body is mounted on a circuit board. The electronic component causes a controller to perform processing in accordance with an operation input by the operation body. The mounting board includes a power-feeding leg piece connected to a wireless communication processor so that high frequency communication is allowed, a first short-circuiting leg piece that is adjacent to the power-feeding leg piece via a cut-out portion, and a second short-circuiting leg piece separated from the power-feeding leg piece. The short-circuiting leg pieces are connected to grounded portions. The impedance is adjusted by appropriately selecting the width or the depth of the cut-out portion. The resonance frequency is adjusted by appropriately selecting the size or the position of the short-circuiting leg piece. Thus, the mounting board operates as an inverted-F antenna in which the power-feeding leg piece functions as a power feeding portion.

Abstract: An antenna assembly is disclosed. The antenna assembly includes a radiation body, an antenna feed portion, a RF feed portion, a first branch having one end electrically connecting to the antenna feed portion, and another end electrically connects to a first feed point of the radiation body, the first feed point dividing the radiation body into a first radiation portion and a second radiation portion. The antenna assembly further includes a second branch electrically connecting to a second feed point of the second radiation portion, an impedance matching circuit coupled between the antenna feed portion and the RF feed portion. The impedance matching circuit receives the low frequency signals and matches the impedance, then feeds to the antenna feed portion.

Abstract: An ultra-wideband, low profile antenna is provided. The antenna includes a ground plane substrate, a feed conductor, a top hat conductor, a shorting arm, and a ring slot. The feed conductor includes a first end and a second end. The first end is configured for electrical coupling to a feed network through a feed element extending from the ground plane substrate. The top hat conductor includes a generally planar sheet mounted to the second end of the feed conductor in a first plane approximately parallel to a second plane defined by the ground plane substrate. The shorting arm includes a third end and a fourth end. The third end is mounted to the top hat conductor, and the fourth end is mounted to the ground plane substrate. The ring slot is formed in the ground plane substrate around the feed element.

Abstract: A communication device including a ground element and an antenna element is provided. The antenna element includes a metal element. The metal element has a plurality of bends and substantially forms a loop structure with a gap. The gap is between a first open end and a second open end of the metal element. The metal element extends along an edge of the ground element and does not overlap with the ground element. The antenna element has a feeding point. A first portion of the metal element is between the feeding point and the first open end, and a second portion of the metal element is between the feeding point and the second open end. The feeding point, the first open end, and the second open end are all facing or adjacent to the edge of the ground element.

Abstract: A variable Z0 impedance method (“Variable Z0”) for designing and/or optimizing antenna systems. The method provides that the value of an antenna's feed system characteristic impedance or apparatus internal impedance (Z0) changes as a true variable quantity during the antenna system design or optimization methodology. The value is allowed to be determined by the methodology, because different values of Z0 result in different antenna system performance. It is applied to any set of performance objectives on any antenna system wherein apparatus internal or transmission line characteristic impedance is an explicit or implicit parameter. Variable Z0 is applied to any design or optimization methodology. Structures include Yagi-Uda arrays, Meander Monopoles, and transmission line Multi-Stub Matching Networks, and can incorporate Central Force Optimization or Biogeography Based Optimization or other optimization algorithms.

Abstract: Embodiments of resonator circuits and modulating resonators and are described generally herein. One or more acoustic wave resonators may be coupled in series or parallel to generate tunable filters. One or more acoustic wave resonances may be modulated by one or more capacitors or tunable capacitors. One or more acoustic wave modules may also be switchable in a filter. Other embodiments may be described and claimed.

Abstract: A reconfigurable antenna comprises two or more mutually coupled radiating elements and two or more impedance-matching circuits configured for independent tuning of the frequency band of each radiating element. In addition, each radiating element is arranged for selective operation in each of the following states: a driven state, a floating state and a ground state.

Abstract: A multi band internal antenna is disclosed. The antenna may include a board, an impedance matching/feeding part formed on the board, and a first radiation element joined to the impedance matching/feeding part, where the impedance matching/feeding part may include: a first matching element of a particular length that is coupled to a ground, and a second matching element of a particular length that is arranged with a distance from the first matching element and is electrically coupled to a feeding point, and where the distance between the first matching element and the second matching element may vary partially. Thus, a multi band internal antenna can be provided that utilizes coupling matching to achieve wide-band characteristics even for multi-band designs.

Abstract: A wireless communication device includes a wireless IC device, a multilayer substrate including a stack of a plurality of dielectric layers, a resonant circuit that is connected to the wireless IC device and that includes a capacitance element provided in the multilayer substrate and an inductance element provided outside the multilayer substrate, and a radiation conductor connected to the resonant circuit.

Abstract: A communication antenna device (D), on board a motor vehicle, for communicating with an antenna of a portable device, includes: a communication antenna (A) including a first part (A1) having a maximum number of primary windings (E1MAX) and a second part (A2) having a maximum number of secondary windings (E2MAX), a microcontroller (10) electrically connected to the antenna (A), a first switching element (M1), for connecting the first part and/or the second part to the microcontroller (10), a second switching element (M2), for connecting a determined number of primary windings (E1i) of the first part to the microcontroller (10), a third switching element (M3), for connecting a determined number of secondary windings (E2j) of the second part to the microcontroller (10), and elements for controlling (20) the first, second and third switching elements.

Abstract: An apparatus for controlling impedance in an adaptive tuning antenna circuit is disclosed, wherein a matching unit is connected to an output terminal where a coupler outputs a coupled power of a transmission signal, a controller adjusts an impedance of the matching unit to cause the reflected power outputted by the coupler to be minimized, and the controller adjusts an impedance of a tuner to allow a combined impedance of the tuner and an antenna to be equal to the impedance of the matching unit but with opposite phases, thereby adjusting the impedance of the antenna in the optimal state.

Abstract: Disclosed herein is a power feeding apparatus, including: a power feeding portion adapted to feed an electric power in a wireless manner; and a storage body storing therein the power feeding portion. The storage body includes a main body, a first storage portion formed within the main body and storing therein the power feeding portion, and at least one second storage portion formed so as to be adapted to store or retrieve a power receiving apparatus as a storage object in or from the main body, the electric power of the power feeding portion stored in the first storage portion being adapted to be fed from the at least one second storage portion. At least a magnetically shielding portion is formed in an outer peripheral portion, and the at least one second storage portion forms a magnetically closed space in a state of being stored in the main body.

Abstract: A wireless communication terminal according to the embodiment includes a communication module including a circuit board having a plurality of pins; a shield case antenna overlapping with one side of the circuit board, electrically connected to a part of the pins and including a signal receiving unit; and a signal processing unit for processing the received signals. An antenna matching unit for matching impedance between the signal processing unit and an antenna unit, a phase shifter for controlling a phase of the received signal and an amplitude regulator for adjusting amplitude of the received signal are provided between the signal processing unit and the antenna unit.

Abstract: An antenna device is provided. The antenna device comprises a first radiation portion and a second radiation portion. The first radiation portion includes a first end and a second end. The second radiation portion is connected to the first end at a connecting part and includes a first arm and a second arm. The first arm and the second arm have different lengths and extend from the connecting part.

Abstract: This disclosure is directed to broadband notch antennas. In one aspect, a notch antenna includes a dielectric plate having a first surface and a second surface located opposite the first surface. A conductive layer is disposed on the first surface and has a notch region that exposes the dielectric plate between edges of the conductive layer. The antenna also includes two or more frequency matching circuits that branch from the notch region. Each matching circuit is configured to send and receive electromagnetic radiation in a frequency band of a radio spectrum.

Abstract: Disclosed herein is a top load multi-band monopole antenna that is utilized with an integrated electromagnetic coupling feed wire and resonator combination achieving broad band and multi-band performance for multiple frequency spectrums. The top loaded monopole can utilize 450-520 MHz, 698 through 960 MHz and 1000 through 3000 MHz bands contiguously and simultaneously by implementation of the coupling feed wire and resonator combination. The electromagnetically coupled top load resonator in conjunction with the lower monopole resonator section matches impedance for both low frequency and high frequency range operation. A flexible radome housing structure augments impact resistance by permitting the monopole radiator aperture to flex under mechanical load while maintaining reliable signal transmission and reception properties.

Abstract: In a case in which a capacitor is not provided in parallel with a second inductance element, the impedance ratio between a first inductance element and the second inductance element is constant regardless of the frequency, but when a capacitor is provided, the parallel impedance of the capacitor and the second inductance element gradually increases at frequencies equal to and below the resonant frequency. Consequently, at frequencies equal to or below the resonant frequency, the higher the frequency becomes, the larger the value of the real portion of the impedance observed on a high-frequency-circuit side becomes. Therefore, by appropriately setting the values of the first inductance element, the second inductance element, and the capacitor, the frequency characteristics of the real portion of the impedance observed on the high-frequency-circuit side can be set to be similar to the frequency characteristics of the radiation resistance of the antenna.

Abstract: An improved wireless radio-frequency (RF) transmission system is disclosed. The wireless RF transmission system comprises: 1) a radio frequency (RF) transceiver configured to transmit and receive radio-frequency signals; ii) an electrically small antenna having a complex impedance comprising a real part and an imaginary part; and iii) a tunable negative impedance converter (NIC) circuit coupling the electrically small antenna to the RF transceiver. The tunable NIC circuit is configured to perform antenna matching by reducing the imaginary part of the complex impedance of the electrically small antenna. The tunable NIC circuit is tuned by adjusting a transconductance value associated with the tunable NIC circuit.

Abstract: Methods and systems for an on-chip and/or on-package T/R switch and antenna are disclosed and may include selectively coupling one or more low noise amplifiers (LNAs) and/or one or more power amplifiers (PAs) to one or more ports of a multi-port distributed antenna utilizing configurable transmit/receive (T/R) switches integrated on a chip with the LNAs and PAs. The LNAs and PAs may be impedance matched to the antenna by coupling them to a port based on a characteristic impedance at the port. The T/R switches may be integrated on a package to which the chip may be coupled. The signals transmitted and received by the antenna may be time division duplexed. The antenna, which may include a microstrip antenna, may be integrated on the chip or the package. The LNA and the PA may be coupled to different ports on the antenna via the T/R switches.

Abstract: A mobile wireless communications device may include a portable housing, and an antenna carried by the portable housing. The mobile wireless communications device may further include wireless communications circuitry carried by the portable housing and an adjustable impedance matching network coupled between the wireless communications circuitry and the antenna. An audio input transducer and an audio output transducer may be carried by the portable housing. The mobile wireless communications device may further include a controller carried by the portable housing and configured to determine an acoustic coupling between the audio input transducer and the audio output transducer. The controller may further be configured to adjust the adjustable impedance matching network based upon the determined acoustic coupling.

Abstract: The invention relates to a portable communication equipment comprising a handset with means for transmitting and receiving radiofrequency mobile telephony signals via a cellular radiocommunication network; means for receiving radiofrequency television signals; means for displaying data corresponding to received television signals and acoustic means for reproducing sounds associated to received television signal. According to the invention, said means for receiving radiofrequency television signals comprise a tuner and demodulator located in an accessory separated from said handset and intended to be worn by a user of the handset, said accessory comprising an external metallic area intended to be in direct contact with the skin of said user and electrically linked to an input of said demodulator, and in that said equipment also comprises a transmitting link for transmitting to said handset data corresponding to received radiofrequency television signals downstream from said demodulator.

Abstract: 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.

Abstract: A radio-frequency (RF) processing device, for a wireless communication device, is disclosed. The RF processing device comprises an antenna, an RF-signal processing module, a controller, for generating a control signal according to a band switching signal, and a matching adjustment module for adjusting an impedance between the antenna and the RF-signal processing module according to the control signal.

Abstract: An antenna device includes a plate-shaped radiating element, a frame-shaped radiating element arranged to surround the plate-shaped radiating element, and a feeding unit that includes a feeding circuit and a frequency stabilizing circuit and that is connected between the plate-shaped radiating element and the frame-shaped radiating element. The plate-shaped radiating element and the frame-shaped radiating element are connected to the feeding circuit through the frequency stabilizing circuit as a result of a first terminal portion of the frequency stabilizing circuit being connected to the frame-shaped radiating element, a second terminal portion of the frequency stabilizing circuit being connected to the plate-shaped radiating element, and a third terminal portion of the frequency stabilizing circuit being connected to the feeding circuit.

Abstract: An impedance matching circuit for matching planar antennas includes a signal path with a signal path input and a signal path output. A first capacitive element with variable capacitance is connected between the signal path input and signal path output. A second capacitive element with variable capacitance is connected between the signal path and ground. A first inductive element is connected between the signal path input and ground. A second inductive element is connected between the signal path output and ground. An antenna line with an impedance between 30 and 60 ohm is connected to the signal path output.

Abstract: The antenna matching circuit control device with an antenna body includes a sensing module, a processing module, a power adjusting module and a frequency adjusting module. The sensing module senses an object that approaches the antenna body and outputs a sensing signal accordingly. The processing module is coupled to the sensing module and outputs a first control signal and a second control signal according to the sensing signal. The power adjusting module is coupled to the processing module and controls a power amplifier to couple with one of a plurality of first matching circuits according to the first control signal. The frequency adjusting module is coupled to the antenna body and the power adjusting module. The frequency adjusting module controls one of a plurality of second matching circuits to couple with one of the first matching circuits according to the second control signal.

Abstract: An apparatus including: a first antenna operable in a first resonant frequency band; a second antenna operable in a second resonant frequency band; a first filter coupled to the second antenna; and a first phase shifter configured to provide the combination of at least the first filter and the second antenna with an impedance at the first resonant frequency band which substantially suppresses coupling between the first antenna and the second antenna.

Abstract: An antenna including a ground plane, a broadband radiating element mounted on the ground plane and including a feed point, the feed point having a first impedance, a feed for feeding the broadband radiating element at the feed point, the feed having a second impedance and a ground leg extending between the broadband radiating element and the ground plane for impedance matching the first impedance to the second impedance, the ground leg being capacitively coupled to the broadband radiating element.

Abstract: A communication device including a ground element and an antenna element is provided. The antenna element is close to the ground element. The antenna element includes a first radiation element and a second radiation element. The first radiation element provides a first current path and operates in a first band. The second radiation element provides a second current path and operates in a second band. The frequencies of the second band are higher than those of the first band, and the length of second current path is greater than that of first current path.

Abstract: An antenna tuner is placed between a Power Amplifier (PA) and an antenna. The antenna tuner includes programmable components that can be tuned in order to effect an impedance translation between the antenna and the PA output. In an embodiment, the antenna tuner is adapted dynamically based on changes in the impedance of the antenna. In another embodiment, the antenna tuner is controlled based on measurement of the voltage reflection coefficient S11.

Abstract: Wideband single resonance antenna. An antenna may include a first conductor unit and a second conductor unit. The first conductor unit may be configured to have one end electrically coupled to a power. The second conductor unit may be configured to have one end electrically coupled to a ground, to surround at least one side of the first conductor unit, and to be electrically separated from the first conductor unit.

Abstract: An antenna system includes a circularly polarized (CP) antenna for receiving and/or transmitting a circularly polarized RF signal. The CP antenna includes a pair of radiating patches each having an elongated shape. An elongated axis is defined along a longest length of each of the radiating patches. The elongated axes are disposed generally perpendicular to one another to generate the circular polarization. A coplanar waveguide feeding element is disposed between the radiating patches for feeding RF signals from and/or to the radiating patches via electromagnetic coupling. A width of the slot of the coplanar waveguide is varied to provide impedance matching of the CP antenna with a transmission line.

Abstract: A method includes, during transmission and/or reception of a radio frequency signal, detecting an impedance associated with an antenna connected with a matching network; algorithmically determining a reactance value of at least one reactive element that forms a part of the matching network in accordance with the detected impedance and at least one parameter including at least one of a currently used radio frequency, at least one user/device factor, at least one radio frequency offset value, and at least one predetermined constant; and setting the value of the at least one reactive element to match the determined value.

Abstract: Disclosed are an impedance matching method, an impedance matching apparatus for the same, and a record medium. The impedance matching apparatus includes an impedance matching part connected to an antenna to transmit/receive a radio wave and including at least one variable capacitor, a detector to detect transmit power and reflected power reflected by the antenna, and a controller to set a first searching region within a whole variation range of the variable capacitor, to detect an optimal impedance matching point within the first searching region by using at least one of the transmit power and the reflected power, and to set a next searching region about the optimal impedance matching point to search for a final impedance matching point within the whole variation range of the variable capacitor.

Abstract: Presented is an interface circuit for connecting a RF antenna to a RF device. The interface circuit comprises: a first terminal adapted to connect to the RF antenna; a second terminal adapted to connect to the RF device; an inductive load connected to the second terminal; a first switch adapted to connect the inductive load to the first terminal; and a resistive load connected to the second terminal via a second switch.

Abstract: A communication device including a ground element, an antenna element and a switching unit is provided. The antenna element is substantially a loop antenna and includes a first part, a second part and a third part. The second part includes (N?1) bends for forming N connection sections. The third part includes (P?1) bends for forming P ground sections. The N connection sections are connected in series between a first end of a first ground section and the first part. A second end of an ith ground section is electrically connected to a first end of an (i+1)th ground section, i is an integer and 1?i?(P?1). A second end of a Pth ground section is electrically connected to the ground element, and a (P?1)th ground section includes at least one ground point. The switching unit is electrically connected between the at least one ground point and the ground element.

Abstract: Mobile devices with conductive liquid antennas and related methods are provided. In this regard, a representative mobile device includes a first antenna having a first channel and a first liquid, the first channel defining a first interior volume, the first liquid being electrically conductive and located within the first channel, the first liquid further exhibiting a first volume smaller than the first interior volume; and a first antenna feed mounted such that, responsive to the device being in a first orientation, the first liquid electrically communicates with the first antenna feed.

Abstract: A multiband antenna includes at least two antenna elements for use in a low frequency band and a high frequency band, a feeding point unit configured to be shared by both of the antenna elements for use in the low frequency band and the high frequency band and an impedance matching unit configured to be inserted into and connected to a position between an end of the antenna element for use in the high frequency band on the side of the feeding point unit and an open end thereof.