Matches 1 - 50 out of 145 1 2 3 >


Match Document Document Title
9014648 Diversity receiver with shared local oscillator signal in diversity mode  
A multi-mode receiver is disclosed that is reconfigurable to share a local oscillator signal in diversity mode to save power consumption. In an exemplary embodiment, an apparatus includes a...
8934853 Systems and methods for integrating cellular and location detection functionality using a single crystal oscillator  
Embodiments of the present disclosure use shared oscillator for cellular communications and location detection in a communication device. The communications device estimates a frequency offset of...
8929840 Local oscillator buffer and mixer having adjustable size  
Selectable sizes for a local oscillator (LO) buffer and mixer are disclosed. In an exemplary embodiment, LO buffer and/or mixer size may be increased when a receiver or transmitter operates in a...
8923788 Circuit and method for adjusting a digitally controlled oscillator  
In one embodiment the present invention includes a method of generating an oscillating signal at different frequencies. The method comprises configuring a digitally controlled oscillator (DCO)....
8886144 Compensation apparatus for receiver asymmetric wide passband frequency response with 25% duty cycle passive mixer  
A receiver compensation method comprising receiving a radio frequency signal, amplifying the radio frequency signal, thereby producing an amplified signal, compensating the amplified signal,...
8855579 System and method for correcting integral nonlinearity in an oscillator system  
A method may include measuring a frequency difference between an actual frequency and an expected frequency associated with a frequency control calibration signal value for each of a plurality of...
8849228 Receiver capable of reducing local oscillation leakage and in-phase/quadrature-phase (I/Q) mismatch and an adjusting method thereof  
A receiver having a mixer for mixing a radio frequency signal and a local oscillator signal so as to generate a base band signal, a detecting unit for generating from the base band signal a...
8761700 Active antenna array with a single common clock and a method for relaying a plurality of radio signals  
An active antenna system for a mobile communications network and a method for relaying radio signal in the mobile communications network is disclosed. The active antenna system comprises a...
8744385 Efficient reduction of local oscillator leakage  
A frequency conversion system includes a mixer, which is coupled to mix an input signal with a Local Oscillator (LO) signal, so as to produce an output signal. Control circuitry is configured to...
8731501 Systems and methods for tuning a broadcast radio receiver with digital display  
Systems and methods that employ receiver circuitry to provide frequency display signals to a digital display without the presence or use of any external timing reference. One or more properties of...
8725092 Methods and apparatuses for frequency filtering for non-centered component carrier transmission  
In accordance with an example embodiment of the present invention, an apparatus comprises a first multiplier configured to convert a first frequency signal into a second frequency signal based at...
8670736 Crystal control scheme to improve performance of a receiver  
A circuit includes, in part, a receiver, a received signal strength indicator (RSSI), and an oscillator. The receiver receives an incoming signal and an oscillating signal. The RSSI is responsive...
8655296 Frequency synthesizer and related method for generating wideband signals  
A frequency synthesizer includes a phase-locked loop circuit having an output. A frequency divider is connected to the output of the phase-locked loop circuit for receiving the signal therefrom...
8600324 Circuit and method for adjusting a digitally controlled oscillator  
In one embodiment the present invention includes a method of generating an oscillating signal at different frequencies. The method comprises configuring a digitally controlled oscillator (DCO)....
8588707 Reference frequency control in multi-modal devices  
The present disclosure relates to methods, systems and devices for shifting a reference frequency from a first value to a second value, the shifting characterized at least in part by a controlled...
8570146 In-vehicle wireless system  
An in-vehicle wireless system, capable of operating at least in a copy mode and a transmission mode, comprises: at least one receiving unit receiving a wireless signal transmitted from a remote...
8406702 Clock signal generating arrangement for a communication device  
A clock signal generating arrangement for a communication device generates a system clock signal at an output for use as a timing reference. The clock signal generating arrangement comprises a...
8385865 Evolved EDGE receiver  
The wireless receiver of the present invention accommodates dual-carrier Evolved EDGE without significantly impacting existing receiver architectures. The inventive receiver comprises a shared...
8346188 Nonlinearity calibration scheme for a frequency modulation transmitter  
A nonlinearity calibration system and method for a frequency modulation (FM) transmitter. A nonlinearity calibration system for a FM transmitter includes a digitally controlled oscillator (DCO)...
8315587 Mechanical tuning of a radio  
In one implementation, a receiver may have an analog front end with an amplifier to receive a radio frequency (RF) signal and a mixer to downconvert the signal to a baseband signal. Then, a...
8301102 Correcting quadrature crosstalk contamination in receivers  
An apparatus, a method and a system for correcting a phase imbalance are described. Embodiments may measure the phase imbalance inherent in a tuner and use the imbalance measure to correct the...
8259888 Method of processing signal data with corrected clock phase offset  
The present invention provides a method of processing signal data comprising generating a first clock signal and a second clock signal and processing the signal data using the first clock signal...
8254849 FM radio frequency plan using programmable output counter  
An FM radio with a wide frequency range operates in a cell phone without interfering with the VCO of the RF transceiver. The FM transceiver generates a VCO signal whose frequency varies by less...
8249533 Rapidly adjustable local oscillation module and applications thereof  
A rapidly adjustable local oscillation (LO) module for use in a radio transmitter or a radio receiver includes an oscillation generating module and a high frequency switching module. The...
8219054 Oscillating circuit and radio communication apparatus  
According to an aspect of the invention, an oscillating circuit includes: a first MOS transistor having a first drain terminal and a first source terminal; a load element connected to the first...
8140039 Quadrature-input quadrature-output divider and phase locked loop frequency synthesizer or single side band mixer  
The present invention relates to a quadrature divider which may be used in a phase locked loop or frequency synthesizer or with a single side band mixer. According to a preferred embodiment the...
8090335 Method and apparatus for an adaptive step frequency calibration  
An open loop frequency calibration algorithm is employed whereby frequency counters are utilized to provide frequency information concerning the difference in frequency between a local oscillator...
8077818 Radio receiver  
A radio receiver including a reception processing system that uses discrete-time frequency conversion to acquire a signal having a sampling rate corresponding to a local frequency, wherein the...
8036613 Communication system and method for operating a communication system  
Communication system including a host and a device. The host has an oscillator and the device has a USB-function core. The oscillator in the host is coupled to the USB-function core in the device.
8023913 Master-slave local oscillator porting between radio integrated circuits  
A technique to share a local oscillator signal between two radio frequency integrated circuits (RFICs). The local oscillator signal generated internally by one RFIC is ported to the other RFIC for...
7941115 Mixer with high output power accuracy and low local oscillator leakage  
A circuit receives a first signal (for example, a baseband signal) and mixes it with a local oscillator (LO) signal, and outputs a second signal (for example, an RFOUT signal). The circuit...
7937054 MEMS based multiband receiver architecture  
A receiver comprising at least one micro-electromechanical system (MEMS) antenna-select switch, a MEMS filter bank communicatively coupled to the antenna-select switch and a plurality of...
7920837 Method and system for utilizing undersampling to remove in-band blocker signals  
Methods and systems for wireless communication are disclosed and may include band-limiting a wireless signal utilizing a programmable bandpass filter, generating a first signal by undersampling...
7904045 Phase detector comprising a switch configured to select a phase offset closest to a phase of an amplifier  
A phase detector includes a plurality of phase detectors located in a phase correction loop, each phase detector configured to receive as input a radio frequency (RF) input signal and an RF...
7869778 Master-slave local oscillator porting between radio integrated circuits  
A technique to share a local oscillator signal between two radio frequency integrated circuits (RFICs). The local oscillator signal generated internally by one RFIC is ported to the other RFIC for...
7860470 Cross coupled high frequency buffer  
A local oscillator (LO) buffer circuit comprises first and second LO buffers arranged in a cross coupled configuration. The first LO buffer generates in-phase output signals in response to...
7860464 Method and system for a programmable local oscillator generator based on quadrature mixing using a phase shifter  
Methods and systems for a local oscillator generator based on quadrature mixing using a phase shifter. Aspects of one method may include generating a local oscillator signal, where a frequency of...
7848435 NxN multiple-input multiple-output transceiver  
An N×N multiple-input multiple-output (MIMO) transceiver is provided. The transceiver includes a plurality of transceivers, each including at least one transceiver circuit; an oscillation unit...
7848719 Ultra-wideband variable-phase ring-oscillator arrays, architectures, and related methods  
Variable phase ring oscillators are described that provide a linear phase progression between adjacent elements in an antenna array by providing a symmetric ring configuration of tuned amplifiers...
7840199 Variable-phase ring-oscillator arrays, architectures, and related methods  
Embodiments of the present disclosure allow for a linear phase progression between adjacent elements in array by providing a symmetric ring configuration of tuned amplifiers and a single phase...
7792510 Multi-band frequency synthesizer  
A multi-mode PLL frequency synthesizer of a wireless multi-mode transceiver is provided which includes a reference frequency source providing an oscillator signal with a constant reference...
7787836 Multiple radios communication device and a method thereof  
A wireless communication device to transmit and receive signals of two or more wireless networks is disclosed. The wireless communication device includes a first radio to transmit a first type of...
7783275 Integrated direct conversion satellite tuner  
A direct conversion satellite tuner is fully integrated on a common substrate. The integrated tuner receives an RF signal having a plurality of channels and down-converts a selected channel...
RE41583 Frequency-stabilized transceiver configuration  
A transceiver configuration has an integrated circuit (IC) with an A/D and/or D/A converter, a VCO with a reference oscillator, which provides a sampling clock for the A/D and/or D/A converter,...
7660612 Precise sleep timer using a low-cost and low-accuracy clock  
A wireless transmit/receive unit (WTRU) uses an oscillator providing accuracy for synchronized communications parameters in an active mode, and operates at reduced power during a discontinuous...
7647031 Vehicle receiver system in which a single receiver circuit is controlled to receive signals transmitted from a plurality of remote devices having respectively different transmission frequencies  
A vehicle-mounted receiver system includes a receiver apparatus that is controlled for receiving, in common, transmissions from a plurality of external devices such as a remote key, smart key,...
7606541 Enhanced holdover for synchronous networks employing packet switched network backhaul  
Systems and methods are disclosed to maintain synchronous communications that uses a global positioning system satellite, a primary communication unit, and a secondary communication unit. The...
7603095 Apparatus and method of switching intervals  
The present invention provides a way of hysteretic switching for efficiently reducing the heavy switching between two adjacent coarse intervals. The present invention disposes a number of fine...
7536164 Controlling the frequency of an oscillator  
A technique includes selectively coupling impedances to an oscillator to establish a first frequency of operation of the oscillator. The technique includes repeating the selective coupling in a...
7536160 Wideband phase shift device  
The invention relates to a wideband phase shift device. A phase shift φ is introduced on the fixed frequency local oscillator. The principle of the invention is to realise a double translation of...

Matches 1 - 50 out of 145 1 2 3 >