Matches 1 - 23 out of 23


Match Document Document Title
US20110306311 Adaptively powered local oscillator generator circuit and related method  
According to one embodiment, a radio frequency (RF) transceiver includes a local oscillator generator (LOGEN) circuit configured to receive an adaptive supply voltage. The LOGEN circuit is coupled...
US20080242240 Calibration of wireless communication device  
A wireless communication device includes an integrated circuit (IC) and an antenna system. The IC includes a baseband processing module, a network processing module, a calibration processing...
US20080081568 TRANSMITTER AND RECEIVER CIRCUIT  
A transmitter and receiver circuit includes antennas for receiving high-frequency signals; a local oscillator for generating local oscillation signals; mixers connected to respective antennas for...
US20120040628 Transceiver with Interferer Control  
Some embodiments of the present disclosure relate to a transceiver that includes multiple communication subunits associated with multiple communication protocols, respectively. The transceiver...
US20110105054 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...
US20060223458 Radio frequency transceiver integrated circuit floor plan applicable to MIMO  
A Radio Frequency (RF) transceiver Integrated Circuit (IC) includes a first RF transceiver group, a first baseband section, a second RF transceiver group, a second baseband section, local...
US20060073793 Local oscillator (LO) port linearization for communication system with ratiometric transmit path architecture  
An RF transmitter (104) includes a shared local oscillator circuit (126), transmit path circuitry (120, 122, 124), a divider (134), and a lowpass filter (322). The shared local oscillator circuit...
US20140287700 RADIO COMMUNICATION DEVICE, TRANSMISSION CIRCUIT AND BUFFER CIRCUIT  
According to one embodiment, a buffer circuit has a capacitor comprising a first terminal and a second terminal, an input signal being inputted to the first terminal, a first inverting amplifier...
US20090072912 OSCILLATOR SIGNAL GENERATION WITH SPUR MITIGATION IN A WIRELESS COMMUNICATION DEVICE  
Techniques for generating oscillator signals in a wireless communication device are described. A phase-locked loop (PLL) may be used to generate an oscillator signal for a selected frequency...
US20060223455 System and method for wireless communication using low-pulling digital interface signals  
The digital interface between the baseband section and the RF transceiver section of a wireless communication device may cause undesired pulling to an impedance sensitive portion of the RF...
US20070049215 Downconversion mixer with IM2 cancellation  
A downconversion mixer with IM2 cancellation includes a mixer, an IM2 generator, and a scaling unit. The mixer frequency downconverts an input RF signal with an LO signal and generates an output...
US20100203848 FIXED BANDWIDTH LO-GEN  
A local oscillation generator (LO-GEN) maintains a fixed bandwidth using a voltage controlled oscillator (VCO) calibration module and gain calibration module that together compensate for...
US20090311972 SYNTHESIZER AND MODULATOR FOR A WIRELESS TRANSCEIVER  
A transceiver including a transmit modulator and a receiver. The modulator may accept a channel selection input, a first modulation input, a second modulation input, and an amplitude input. During...
US20140065985 TRANSCEIVER WITH SUPER-HETERODYNE AND ZERO INTERMEDIATE FREQUENCY (ZIF) TOPOLOGIES  
Transceivers implemented with a combination of super-heterodyne and zero intermediate frequency (ZIF) topologies are disclosed. In an exemplary design, an apparatus includes a frequency conversion...
US20090098835 RADIO-FREQUENCY SIGNAL RECEPTION AND/OR TRANSMISSION DEVICE WITH NOISE REDUCTION  
The radio-frequency signal reception and/or transmission device includes an antenna (8) for picking up or transmitting radio-frequency signals, a bandpass filter (9), at least one low noise...
US20110014880 SYSTEM AND METHOD FOR A SINGLE CHIP DIRECT CONVERSION TRANSCEIVER IN SILICON  
A direct conversion radio frequency (RF) transceiver integrated circuit (IC) is provided. The IC includes a local oscillator block, a receiver block, and a transmitter block disposed on a single...
US20090227214 METHOD AND SYSTEM FOR CALIBRATING A MULTI-MODE, MULTI-STANDARD TRANSMITTER AND RECEIVER  
Methods and systems for calibrating a multi-mode, multi-standard transmitter and receiver are disclosed. Aspects of the method may include configuring calibration paths in a transceiver on a chip...
US20110075714 SINGLE OSCILLATOR TRANSCEIVER  
A frequency plan is provided for particular use in a transceiver. Advantageously, a single oscillator may be used to generate desired frequency signals. One or more power splitters receive the...
US20100279631 BIDIRECTIONAL FREQUENCY CONVERTER AND RADIO EQUIPMENT USING SAME  
When a power supply switch is turned on and an RF signal and an LO signal are input to a bipolar transistor, a mixed signal of both signals is output as an IF signal. When the power supply switch...
US20170163214 LOW NOISE AND LOW POWER VOLTAGE-CONTROLLED OSCILLATOR (VCO) USING TRANSCONDUCTANCE (gm) DEGENERATION  
Certain aspects of the present disclosure generally relate to voltage-controlled oscillators (VCOs) using a lowered or an adjustable negative transconductance (−gm) compared to conventional VCOs....
US20160277058 SINGLE LOCAL OSCILLATOR ARCHITECTURE FOR DUAL-BAND MICROWAVE/MILLIMETER-WAVE TRANSCEIVER  
Systems for a dual-band transceiver that re-uses a lower frequency transmitter to drive a local oscillator (LO) for high frequency circuits are disclosed herein. The need for a LO lineup requiring...
US20160270212 DEVICE AND METHOD FOR CROSSTALK REDUCTION IN TRANSMISSION LINES  
A system and method is provided for crosstalk reduction in a coupled transmission line on a multilayer structure. The coupled transmission line provides a high frequency signal such as from a...
US20150288412 Harmonic Rejection Mixer  
An apparatus, which includes a local oscillator configured to oscillate at a carrier frequency and having output ports and configured to provide a signal of a respective phase at each of the...

Matches 1 - 23 out of 23