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9042816 |
Methods and apparatus for improving NFC coil tuning based on proximity to a remote NFC device
Aspects disclosed herein relate to improving tuning of a NFC coil for operation in one or more modes based on a distance between a NFC device and a remote NFC device. In one example, a NFC device... |
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9037103 |
MRC antenna diversity for FM IBOC digital signals
A method for processing a radio signal includes: receiving a signal on two antennas; demodulating the signal using first and second independent signal paths that are synchronized by symbol number;... |
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9031523 |
Systems and methods for determining antenna impedance
A method for measuring an impedance of an antenna includes generating, by a signal source coupled to the antenna, a radio frequency (RF) signal, applying the RF signal to a directional coupler,... |
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9026073 |
Device for receiving signals, antenna device and mobile terminal
The disclosure discloses a device for receiving signals, which includes: equipment with lead wires configured to be reused as a receiving antenna to receive Frequency Modulation (FM) signals. The... |
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9026050 |
Communication circuit
In a communication circuit, an RFIC includes an IO terminal and a control IC includes an IO terminal. A variable capacitance element includes control terminals, a capacitance element with a... |
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9020455 |
Power control system for a receiver chain in a transceiver
A transceiver may include an antenna tuning control system operably associated with an antenna tuner to control the current power levels of the transmission signal and the receive signal. The... |
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9014645 |
Wireless communication device, method for controlling wireless communication device, program, and storage medium
In a wireless communication device (10), adjustment means (matching controlling means (152)) changes a reactance of a matching section (17), determination means (calculation means (151), matching... |
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8996080 |
Radio-frequency device and wireless communication device
A radio-frequency (RF) device for a wireless communication device includes a grounding element, an antenna, a first DC blocking element for cutting off a direct-current (dc) signal route between a... |
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8976762 |
Radio frequency architecture for spectrum access networks
Radio frequency (RF) architectures for spectrum access networks are provided. Embodiments of the invention generally provide a radio frequency (RF) architecture for customer premise equipment... |
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8942654 |
System and method for controlling antenna tuning using an auxiliary channel of an embedded display port interface
An information handling system includes a capacitor, an antenna, a wireless wide area network card, an embedded display port interface, and a digital-to-analog converter. The capacitor has a... |
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8923789 |
Method of diminishing the minimum range of operation of a communication link
A portable electronic device comprises a wireless receiver unit for receiving a wireless signal from a transmitting device, the wireless receiver unit comprising an antenna receiving an... |
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8918070 |
Frequency tuning for LC circuits
Apparatus and methods are disclosed related to tuning a resonant frequency of an LC circuit. In some implementations, the LC circuit can be embodied in a low noise amplifier (LNA) of a receiver.... |
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8909182 |
Physically small tunable narrow band antenna
A narrow band, tunable antenna uses a series of small inductors wired in series to produce different resonant frequencies from a single antenna across a wide frequency spectrum. Radio Frequency... |
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8897734 |
Standing wave ratio meter for integrated antenna tuner
The invention provides circuitry integrated into a silicon chip that measures aspects of an RF signal on a transmission line in order to provide data that is ultimately used by an antenna tuner... |
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8897733 |
Dynamic tuning and calibration of antenna with on-chip array of capacitors
Methods and systems for dynamically tuning and calibrating an antenna using on-chip digitally controlled array of capacitors are disclosed. Aspects of one method may include dynamically tuning a... |
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8886145 |
Antenna adjustment circuit, antenna adjustment method, and communication unit
An antenna adjustment circuit includes: a drive section that inputs an alternating drive signal to a variable capacitance connected to an antenna; and a control section that sets a capacitance... |
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8880015 |
Dynamic impedance matching in wireless communications
Aspects of a method and system for LNA adjustment to compensate for dynamic impedance matching are provided. In this regard, an antenna matching network may be configured to maximize received... |
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8868014 |
Immersible UHF antenna with low power auto tuning system
An antenna is provided having a good matching characteristics when immersed in a fluid such as saline water, oil, or other liquids (“the phantom liquid”). In some embodiments, the antenna provides... |
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8831546 |
MRC antenna diversity for FM IBOC digital signals
A radio receiver includes a first signal path including a first tuner configured to receive a first signal from a first antenna, and a first demodulator configured to demodulate symbols from an... |
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8824982 |
Time-variant antenna enabled by switched capacitor array on silicon
A time-variant antenna is disclosed that uses a switched capacitor array in silicon to improve the performance and integration options of the time-variant antenna. Parasitic effects of the... |
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8818308 |
Multi-tuner apparatus for receiving RF signals
A multi-tuner apparatus comprises a splitter (S) for received RF signals. The splitter has a splitter output (U) for connection to a plurality of tuners. To reduce signal degradation and... |
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8811911 |
Radio-frequency processing device and method and related wireless communication device
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... |
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8792937 |
Computing device with configurable antenna
A computing device with a configurable antenna. The antenna is configured through a switching circuit operating under software control. Operating characteristics of the antenna are configured... |
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8781417 |
Hybrid techniques for antenna retuning utilizing transmit and receive power information
An embodiment of the present invention provides an apparatus, comprising a transceiver, an antenna tuner connecting said transceiver to an antenna, a power sensor adapted to acquire measurements... |
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8781522 |
Adaptable antenna system
The invention utilizes small, narrow-band and frequency adaptable antennas to provide coverage to a wide range of wireless modes and frequency bands on a host wireless device. The antennas have... |
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8774743 |
Dynamic real-time calibration for antenna matching in a radio frequency receiver system
Real-time calibration of a tunable matching network that matches the dynamic impedance of an antenna in a radio frequency receiver system. The radio frequency receiver system includes two... |
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8761705 |
Antenna, communication module, communication system, position estimating device, position estimating method, position adjusting device, and position adjusting method
An antenna includes: a differential linear antenna that includes two antenna elements, which have a predetermined length, arranged so as to be separated from each other for to be symmetrical with... |
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8712355 |
Antenna tuning on an impedance trajectory
A method, transceiver integrated circuit (IC), and communications device for generating antenna tuning states derived from a pre-established trajectory of tuning states to adjust a detected signal... |
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8699980 |
Car audio system including an integrated module comprising a tuner unit and an active antenna
A car audio system having a tuner unit and an active antenna integrated into a single module, the car audio system being connected to an antenna for a vehicle and receiving broadcast signals, is... |
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8699965 |
Low loss quarter wave radio frequency relay switch apparatus and method
A low loss quarter wave Radio Frequency (RF) relay switch apparatus and method provides more efficient transmission of RF energy to downstream antenna switching elements in an antenna switching... |
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8682258 |
High-frequency circuit, high-frequency device, and communication apparatus
A high-frequency circuit comprising a switch circuit connected to an antenna terminal, first and second diplexer circuits connected to the switch circuit, first and second power amplifier circuits... |
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8660500 |
Method and system for a voltage-controlled oscillator with a leaky wave antenna
Methods and systems for a voltage-controlled oscillator (VCO) with a leaky wave antenna are disclosed and may include transmitting wireless signals via one or more leaky wave antennas in one or... |
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8655410 |
Beam wobbling for increased downlink coverage and capacity
A method and apparatus for reducing signal interference within a cellular radio system to increase both coverage and capacity. The method and apparatus include altering the direction of beams... |
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8639203 |
Antenna system comprising an electrically small antenna for reception of UHF band channel signals
An antenna system for reception of channel signals form the UHF band by a receiver, including an electrically small antenna and, connected between the port connected to the antenna and that of the... |
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8611829 |
Tunable filter feedback to control antenna switch diversity
A method, antenna switching integrated circuit (IC), and communications device that connect a transmitter to a selected antenna to propagate at least one transmission signal to the selected one of... |
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8594584 |
Method and apparatus for tuning a communication device
A system that incorporates teachings of the present disclosure may include, for example, a tuning system for a communication device having an antenna, where the tuning system includes at least one... |
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8588717 |
Headphone antenna for radio communications device
A radio communications device includes a headphone assembly, which includes at least one aural speaker or transducer and a headphone cable functioning as an antenna and providing electrical... |
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8583065 |
Digitally controlled antenna tuning circuit for radio frequency receivers
A novel digitally controlled antenna tuning circuit that enables the implementation of low cost, wideband tuning circuits for antennas in receive applications. The invention is operative to switch... |
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8571503 |
Signal receiving methods and devices
A signal receiving method for receiving a signal within a predetermined bandwidth for a broadcasting system using an embedded antenna is provided, comprising: obtaining an antenna bandwidth of the... |
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8509718 |
Broadband receive only tuner combined with receive switch
An antenna tuner unit (ATU) that provides broadband tuning is disclosed. The disclosed ATU includes a radio frequency (RF) switch circuit having an N number of switch inputs, wherein N is a... |
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8509720 |
Dynamic impedance matching with LNA
Aspects of a method and system for LNA adjustment to compensate for dynamic impedance matching are provided. In this regard, an antenna matching network may be configured to maximize received... |
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8494601 |
Communication device
The communication device includes: a first body; a second body; a connecting portion that connects the first body and the second body, so as to be capable of switching between a closed state in... |
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8489109 |
Portable wireless device
A mobile wireless device enables effective use of space in a case while reducing degradation of antenna gain and maintaining communication quality even if a plurality of antennas having different... |
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8472904 |
Antenna with integrated tuning detection elements
In various embodiments, systems and methods for automatically tuning an antenna to a desired frequency utilize a tuning detection element that sends or receives a signal in accordance with one... |
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8472905 |
Method and system for tuning an antenna using injection
A method for wireless communication includes adding a received DVB-H signal with a reference oscillator signal to generate an added DVB-H signal. The reference oscillator signal may be added at an... |
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8463200 |
Wireless communication apparatus
In a wireless communication apparatus, when a first switch electrically connects a second antenna to an impedance matching circuit and a second switch electrically connects a first antenna to a... |
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8457569 |
Hybrid techniques for antenna retuning utilizing transmit and receive power information
An embodiment of the present invention provides an apparatus, comprising a transceiver, an antenna tuner connecting said transceiver to an antenna, a power sensor adapted to acquire measurements... |
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8457697 |
Antenna switching arrangement
An antenna arrangement comprising an input/output connection and a first and a second tuning network with different transfer functions. The arrangement additionally comprises an antenna and a... |
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8437314 |
Radio frequency architecture for spectrum access networks
Radio frequency (RF) architectures for spectrum access networks are provided. Embodiments of the invention generally provide a radio frequency (RF) architecture for customer premise equipment... |
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8437716 |
Broadcast receiver and method for regulating the same
A broadcast receiver includes a tuner circuit and a demodulator circuit. The tuner circuit tunes a radio frequency (RF) signal to output an intermediate frequency (IF) signal. The demodulator... |