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US20140057586 Systems and methods for improving the time alignment of non-overlapping waveforms  
Systems and methods for improving the timing alignment of non-overlapping waveforms are provided. In this regard, a representative system, among others, includes a waveform synthesizer that...
US20110092178 DOUBLED BALANCED MIXER WITH IMPROVED COMPONENT MATCHING  
An improved passive double balanced mixer with reduced capacitor voltage mismatch is described. A passive double balanced mixer includes two sets of mixer circuits, each comprised of switches....
US20140038542 Rotating Harmonic Rejection Mixer  
In one embodiment, the present invention includes a mixer circuit to receive and generate a mixed signal from a radio frequency (RF) signal and a master clock signal, a switch stage coupled to an...
US20140030996 LINEARITY IN PASSIVE MIXER CIRCUITS  
A circuit used in a mixer configured to receive a signal made up of a relatively small modulation signal and a relatively large carrier signal is described. The mixer includes multiple switches. A...
US20130178183 Implementing A Passive Rotating Harmonic Rejection Mixer (RHRM) For A TV Tuner In An Integrated Circuit  
In one embodiment, a passive rotating harmonic rejection mixer (RHRM) is provided that can directly couple to an antenna to receive an incoming radio frequency (RF) signal. This RHRM can have a...
US20070129043 Integrated balun and coupler transformer  
Integrated balun and coupler is described. In one example, a radio frequency (RF) device includes a balun and coupler. The balun includes a first winding and a second winding arranged on a...
US20060258318 Broadband balanced frequency converter  
A broadband balanced frequency converter (“BBFC”) in signal communication with a frequency source is disclosed. The BBFC may include a mixer and an active balancing element in signal communication...
US20100081408 Re-Configurable Passive Mixer for Wireless Receivers  
A configurable passive mixer is described herein. According to one exemplary embodiment, the passive mixer comprises a clock generator, a controller, and a plurality of passive mixer cores...
US20130115907 VARIABLE DUTY-CYCLE MULTI-STANDARD MIXER  
An adjustable mixer is disclosed that is capable of operating in different modes in order to satisfy the mixing requirement of multiple radio access technologies (RATs). The adjustable mixer...
US20100105350 LOW-NOISE MIXER  
The system and method of the present invention provide a single mixer (200-400) with significantly reduced noise performance at a low cost by adding a current control circuit (109) that reduces...
US20150200628 Coefficient Estimation for Digital IQ Calibration  
An RF reception system and method uses IF quadrature mixing, in which there is further mixing and channel filtering in the digital domain, to isolate a frequency of interest. A coefficient...
US20090075620 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...
US20080254759 High linearity frequency conversion system and method  
A frequency converter (100) is provided, comprising: a pulse generator (150) configured to receive a balanced local oscillator signal pair and to generate a balanced rectangular pulse signal pair...
US20140370833 DOWN-CONVERSION CIRCUIT WITH INTERFERENCE DETECTION  
A down-conversion circuit for a receiver circuit is disclosed. It comprises a first mixer arranged to down-convert an RF signal with a first LO signal (LO1), thereby generating a first...
US20110124309 HETERODYNE RECEIVER  
A down-conversion module for a heterodyne receiver comprises a first mixer circuit, a second mixer circuit and an interconnection. The first mixer circuit includes first and second differential...
US20070135076 Wideband mixer with multi-standard input  
A wideband mixer circuit that is flexible and reconfigurable so that several identical wideband mixer circuits may be used in lieu of several fixed narrow-band mixers. Such wideband mixer circuits...
US20090203347 MIXER CIRCUITS FOR SECOND ORDER INTERCEPT POINT CALIBRATION  
A balanced mixer circuit (300, 400, 500, 600, 700 and 800) in a baseband receiver (202) includes an oscillator circuit (212), a mixer (214 and 215), a digital-to-analog converter (258 and 259) and...
US20080070541 CURRENT CONVERTER, FREQUENCY MIXER, RADIOFREQUENCY TRANSMISSION SYSTEM AND METHOD FOR FREQUENCY MIXING  
A current converter has a first amplification device, which outputs a differential current depending on a differential control signal and derives a differential feedback signal from the...
US20130267188 DISCRETE TIME POLYPHASE MIXER  
Embodiments of a radio frequency (RF) circuit provide translational filtering in accordance with an input impedance response that is an impedance image of a reactive circuit impedance response...
US20080132194 SUB-HARMONIC MIXER  
A sub-harmonic mixer is provided, which includes: a mixer core having first and second transistors performing switching operations in response to a local oscillator (LO) signal and a radio...
US20110312295 Double balanced mixer  
An improved double balanced mixer is provided which in one embodiment includes a first balun for receiving a first single input and providing a first balanced output having two ports, a second...
US20070224964 SUB-HARMONIC FREQUENCY CONVERSION DEVICE  
A sub-harmonic frequency conversion device includes: a voltage controlled oscillator for generating first to eighth oscillation frequency (LO) signals having a constant phase difference; a first...
US20110201296 MIXER CIRCUITS FOR SECOND ORDER INTERCEPT POINT CALIBRATION  
A balanced mixer circuit (300, 400, 500, 600, 700 and 800) in a baseband receiver (202) includes an oscillator circuit (212), a mixer (214 and 215), a digital-to-analog converter (258 and 259) and...
US20090221258 Balanced Series Mixer for High-Frequency Signals  
A balanced series mixer including a balun transformer (10) having a HF-source port and an antenna port on one side and two diode ports on the other side, two diodes (20, 22), each of which is...
US20140179253 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...
US20070197185 System and method for reducing odd harmonic mixing in broadband tuners  
The invention provides a broadband tuner with a reduced odd harmonic mixing and a method for reducing odd harmonic mixing in the broadband tuner. The broadband tuner includes an arrangement of one...
US20090061812 Multipulse/Multitone Mixing Receiver  
An apparatus adapted for measuring the properties of periodic signals and a method for making such measurements is disclosed. The apparatus includes a LO signal generator, a mixer, a low pass...
US20090305648 SELF-CALIBRATING MIXER  
Mixer circuits (1) comprise mixers (2) for receiving input signals and oscillation signals and for outputting output signals. By providing the mixers (2) with loads (3) having adjustable load...
US20130149983 ACCURATE RADIO FREQUENCY FILTERING USING ACTIVE INTERMEDIATE FREQUENCY FEEDBACK  
A receiver, such as a television tuner, includes a radio frequency (RF) filter circuit. The RF filter circuit includes a filter, a first node, and a second node coupled to the filter, and a...
US20080305759 Mixer Circuit  
The invention relates to a mixer circuit 31 comprising a down-conversion mixing component 33 arranged for down-converting an input radio frequency signal Irf+, Irf−. In order to improve such a...
US20050176398 Mixer circuit  
A mixer circuit mixes a target signal with a local oscillation signal to perform frequency conversion of the target signal. Since the mixer circuit uses a pseudo-sine wave as the local oscillation...
US20120196554 High Dynamic Range Time-Varying Integrated Receiver for Elimination of Off-Chip Filters  
A receiver circuit includes a quadrature passive mixer, a first charge load, and a second charge load. The quadrature passive mixer has a differential input for receiving a differential input...
US20110065412 MIXER CIRCUIT, INTEGRATED CIRCUIT DEVICE AND RADIO FREQUENCY COMMUNICATION UNIT  
A mixer circuit comprises an input stage arranged to convert an input voltage signal received at an input of the mixer circuit into at least one current signal, and a frequency conversion stage...
US20100081409 MINIATURIZED DUAL-BALANCED MIXER CIRCUIT BASED ON A MULTILAYER DOUBLE SPIRAL LAYOUT ARCHITECTURE  
A miniaturized dual-balanced mixer circuit based on a multilayer double spiral layout architecture is proposed, which is designed for use to provide a frequency mixing function for millimeter wave...
US20050159130 Novel DC offset and IP2 correction for down-conversion mixer  
Mixers are provided. A mixer includes an output port, a local oscillation input port, a local mixing driving stage, a radio frequency (RF) input port, a RF driving stage, and first to fourth...
US20050043004 Communication apparatus, electronic equipment with communication functions, communication function circuit, amplifier circuit and balun circuit  
A communication apparatus includes, as a plurality of communication functions, an amplifier for amplifying a received signal or a transmitting signal, a balun for converting an unbalanced signal...
US20140080437 RECEIVER CIRCUIT AND ASSOCIATED METHOD  
A receiver circuit, e.g., a low-IF receiver, including two mixing paths. The two mixing paths scale an input signal respectively by two mixing gains and shift phase of the input signal...
US20150147988 MIXER  
A frequency shifter configured to shift the frequency of a signal, the frequency shifter comprising: a resonant structure configured to mechanically resonate at a first frequency; and a plurality...
US20050191985 Diode ring configuration for harmonic diode mixers  
A sub-harmonic mixer having at least one diode ring array used for up-conversion in a transmitter and for down-conversion in a receiver. Each diode ring array has a plurality of (e.g., four) diode...
US20110250861 HIGHLY INTEGRATED, HIGH FREQUENCY, HIGH POWER OPERATION MMIC  
A system and method for high frequency, high power operation communication systems is provided. More particularly, a system and method for a single system-on-chip system monolithic microwave...
US20070218858 Band control apparatus, band control program and band control method  
A band control apparatus, a band control program and a band control method that control bands takes the cost into consideration. A band control apparatus 1a for relaying signals by using at least...
US20100112973 GENERATION OF A COMPOSITE MITIGATION SIGNALWITH A DESIRED SPECTRAL ENERGY DISTRUBUTION  
A method (1100, 1200) of generating a composite mitigation signal (216, 902, 1002) is presented. The composite mitigation signal includes an odd integer (N) of transitions (310, 312) between a...
US20090149150 SYSTEMS, DEVICES, AND METHODS FOR SUPPRESSING FREQUENCY SPURS IN MIXERS  
Systems, devices and methods are disclosed for suppressing the 2LO frequency spur, output from a mixer. In various exemplary embodiments, a DC bias circuit is electrically connected to provide DC...
US20060154640 Image rejection mixer and terrestrial digital multimedia broadcasting tuner of low intermediate frequency structure using the same  
Disclosed herein are a terrestrial digital multimedia broadcasting (DMB) tuner of a low intermediate frequency (IF) structure which is applied to a mobile communication terminal, such as a mobile...
US20090081985 METHOD AND SYSTEM FOR A DISTRIBUTED TRANSCEIVER WITH DDFS CHANNEL SELECTION  
Aspects of a method and system for a distributed transceiver with DDFS channel selection may include frequency-translating a first signal to generate one or more second signals utilizing a...
US20080051056 Wireless communications system  
One end of a balanced line is connected to a base station. A transmitting and receiving antenna is connected to the other end of the balanced line. The balanced line not only transmits a signal...
US20130183921 Complex Intermediate Frequency Mixer Stage and Calibration Thereof  
The invention relates to a complex intermediate frequency (CIF) mixer stage, methods of operation thereof, and methods of calibration thereof. The CIF mixer stage comprises numerous individual...
US20070287403 Radio-Receiver Front-End and A Method For Frequency Converting An Input Signal  
An N-phase radio receiver front-end for converting an input signal having a first frequency to output signals having a second frequency, and a method for converting an input signal in an N-phase...
US20080248775 DYNAMIC CURRENT STEERING MIXER  
A dynamic current steering mixer. The dynamic current steering mixer comprises a Gilbert cell mixer core, a pair of load devices, a dynamic current steering cell, and a transconductor cell. The...
US20140080436 HIGH-IF SUPERHETERODYNE RECEIVER INCORPORATING HIGH-Q COMPLEX BAND PASS FILTER  
A novel and useful reconfigurable superheterodyne receiver that employs a 3rd order complex IQ charge-sharing band-pass filter (BPF) for image rejection and 1st order feedback based RF BPF for...

Matches 1 - 50 out of 85 1 2 >