Matches 1 - 50 out of 163 1 2 3 4 >
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7398073 Low noise mixer  
A low noise mixer comprises a first mixer core configured to receive a radio frequency (RF) input signal having an RF frequency, and a first local oscillator signal, wherein the first local...
7395043 Data receiver adaptive to RSSI and a method of determining its threshold  
A modem generates a new RSSI threshold value in response to a flag signal representing the quality of the threshold value indicated by the result of error detection supplied from one monitor, and...
7392033 Reducing active mixer flicker noise  
A mixer is disclosed that includes first and second transconductance modules that, in one embodiment, includes MOSFETs configured to receive a plurality of signals that are to be mixed and a...
7386290 RX dual-band mixer  
A dual-band input transceiver block is formed to operably receive one of a 2.4 GHz radio frequency signal or a 5.0 GHz radio frequency transceiver signal in a manner that minimizes duplication of...
7376407 System and method for dynamic impedance tuning to minimize return loss  
A system for tuning an impedance at a node comprises a first component associated with a first impedance when the first component is operating and a second impedance when the first component is not...
7376403 Terahertz radiation mixer  
A terahertz radiation mixer comprises a heterodyned field-effect transistor (FET) having a high electron mobility heterostructure that provides a gatable two-dimensional electron gas in the channel...
7369837 Frequency-mixing method and frequency-mixing device using the same  
A frequency-mixing method includes a step of generating a first quadrature signal having a predetermined frequency, a second quadrature signal having a phase difference of about 180 degrees with...
7315192 CMOS-based receiver for communications applications  
A receiver and receiver front end having multiple independent differential inputs, multiple independent differential low-noise amplifiers, and two sets of double-balanced IQ mixers. The...
7277687 Low power amplitude modulation detector  
An AM demodulator using totem pole complementary metal oxide semiconductor transistors having a feedback to provide a common gate voltage of approximately half that across the transistors in the...
7272370 Mixers with a plurality of local oscillators and systems based thereon  
A receiver apparatus including a main input for receiving the input signal and a first standard mixer having a first mixer input, a first local oscillator input, and a first mixer output. The first...
7181171 System and method for providing auxiliary reception in a wireless communications system  
A system and method for providing auxiliary reception in a wireless communications system includes a wireless communications device. The wireless communications device includes a first antenna and...
7177620 Mixer constant linear range biasing apparatus and method  
A Gilbert cell mixer for a wireless transceiver includes a first stage that performs voltage to current conversions and that includes first and second transistors that are operated in a saturation...
7171184 Method and apparatus for a gain controlled mixer  
A gain controlled mixer for an integrated CMOS transceiver. Accuracy of the controlled gain may be relatively invariant over temperature, manufacturing process, and other variations attendant to...
7164905 High frequency module  
Heretofore, a plurality of packages were used in a high frequency module in which a plurality of waveguide terminals were positioned resulting in problems, such as degradation of characteristics in...
7164902 Filter-integrated even-harmonic mixer and hi-frequency radio communication device using the same  
Configuration of a connection between an even-harmonic mixer and a filter is simplified, thereby enabling size reduction. An even-harmonic mixer and a high-frequency bandpass filter are connected...
7164899 System and method for frequency translation with harmonic suppression using mixer stages  
A method for generating phase signals includes triggering a phase register to output a binary number stored in the phase register, wherein the phase register is triggered based at least in part on...
7164897 Method and apparatus for conversion of radio frequency (RF) signals using aperiodic mixing signals  
An inexpensive, high-performance, fully-integrable, multi-standard transceiver with a topology including: an active mixer, followed by a high pass filter, and a passive mixer. The input signal is...
7130607 Adjusting a programmable mixer  
A method for adjusting a programmable mixer of a local oscillation module to reduce local oscillation leakage begins by determining at least one of: DC offset of an input signal of the programmable...
7130595 Transmitter power amplifier ramping method  
A method for reducing frequency glitches in a digital transceiver due to power amplifier input impedance variations. According to the method, the power amplifier is switched on after the end of a...
7123899 Broadband single-ended input upconverter  
An upconverter for mixing a single-ended RF signal with a differential local oscillator signal to generate a differential IF signal, that includes a source degenerated first differential pair...
7120411 Low noise amplifier (LNA) gain switch circuitry  
A circuit is formed to steer current in and out of an inductive load in a manner that enables an amplifier to provide a plurality of gain steps without modifying an LC time constant for the circuit...
7107025 High gain, highly linear mixer  
A high gain, highly linear mixer includes an input section, mixing section, at least one tuning component, and at least one stand by current source. The input section is operably coupled to receive...
7099647 Single chip direct conversion transceiver for reducing DC offset and method of manufacturing the same  
A single chip direct conversion transceiver that includes a substrate on which a mixer unit and a local oscillator are provided as a circuit, and a positive hole formed between the mixer unit and...
7099383 Apparatus and associated method for operating upon data signals received at a receiving station of a fixed wireless access communication system  
Apparatus, and an associated method, for acting upon data signals received at a base station of a fixed wireless access communication system. A plurality of modems are positioned at the base...
7088984 Electronic tuner  
An electronic tuner of the present invention is arranged such that between an input part of the amplifying circuit and the ground serially connected are a coil and a diode, and a capacitor is...
7076219 Receiver for weak radio wave  
An aspect of the present invention provides a receiving circuit that includes a mixer configured to receive a signal and a local signal to mix the signals, the mixer configured to convert the...
7058370 Transmission power amplifier unit  
A transmission power amplifier unit of a base-station apparatus for compensating for non-linear distortion of a transmission power amplifier by feed-forward control is provided with a gain varying...
7046068 CMOS-based receiver for communications applications  
A receiver and receiver front end having multiple independent differential inputs, multiple independent differential low-noise amplifiers, and two sets of double-balanced IQ mixers. The...
7039445 Communication system, communication apparatus, and communication method  
A communication apparatus transmits, to another apparatus or apparatuses, a message for searching for an apparatus as a connection target by radio communication, and receives a response message...
7016652 Automatic frequency control receiver  
The invention relates to a receiver of signals [S] received from a wireless network, said receiver working at a so-called reference oscillation frequency controlled by a so-called reference value...
6937871 Anti-demodulator circuit, filtering device and demodulator circuit  
The invention relates to an anti-demodulator circuit which is fundamentally built up in the same way as a demodulator circuit but, instead of a bandpass filter as generally used in a demodulator,...
6930631 Sensor front-end with phase coding capability  
A sensor front end for an electronic radar sensor is disclosed that provides for a lower parts count while providing technical functionality by using multifunction parts, i.e., parts that are used...
6917796 Triple balanced mixer  
A triple balanced mixer has a compact size and is readily assembled. The triple balanced mixer has a planar substrate that is formed from several layers of low temperature co-fired ceramic. The...
6889037 Reducing active mixer flicker noise  
A mixer is disclosed that includes first and second transconductance modules that, in one embodiment, includes MOSFETs configured to receive a plurality of signals that are to be mixed and a...
6879192 Even harmonic mixer with high-input, third-order intercept point  
A surface mount, even harmonic mixer is preferably used in point-to-multipoint millimeter wave transceivers. The mixer includes an anti-parallel series arrangement of diodes in one or more ring...
6839551 Radio frequency mixer and method of operation  
There is disclosed a radio frequency (RF) demodulation circuit comprising: 1) a first RF mixer having a first input port for receiving an in-phase RF signal having a frequency of RF and a second...
6728525 Multimode transceiver with multiple if's and common injection  
A system and method is provided for generating a second LO signal to a second mixer of a plurality of receivers employed in a multimode communication device. A single PLO and VCO provides a high...
6678507 Power amplifier system and mobile communication terminal device  
A power amplifier system has a high frequency power amplifier circuit section employing source-grounded enhancement type n-channel MESFETs for receiving a drain bias voltage and a gate bias voltage...
6667723 System and method for a GPS enabled antenna  
A system and a method for providing a global positioning system (GPS) enabled antenna system are provided. The GPS enabled antenna may be used, for example, on a wireless communications device such...
6591093 Circuit and method for frequency translation  
A mixer circuit ( 21 ) includes first ( 31 ) and second ( 32 ) transconductance amplifiers, a switching circuit ( 34 ), and an oscillator processing stage ( 36 ). The transconductance amplifiers (...
6393265 Method and apparatus for two dimensional filtering in a communications system using a transformer system  
A transformer system comprises a transformer star winding to be coupled to an antenna system, and a transformer delta winding disposed with said transformer star winding. The transformer star...
6212369 Merged variable gain mixers  
The present invention teaches parallel coupling what are herein termed a "switching stage" and a "steering stage," thereby arranging the mixer and variable gain amplifier circuitry as a single...
6163689 Negative self-bias circuit for FET mixers  
An improved mixing circuit includes a MESFET having an LO signal coupled to its gate through a charging capacitor and an RF signal coupled to its drain through a first bandpass filter. Electrons...
6127986 Integrated down-converter with dipole-antenna implemented with novel mechanical filter structure  
The present invention discloses an integrated dipole antenna and down converter apparatus. The integrated dipole antenna and down converter apparatus includes a dipole antenna for receiving...
6122497 RF mixer with inductive degeneration  
An RF mixer provides extended dynamic range with reduced noise by utilizing degeneration inductors in the RF input section of a doubly balanced mixer. Degeneration inductors are also utilized in a...
6118991 Device including a broadband amplifier circuit  
A device having a broadband amplifier circuit is disclosed in which the amplifier circuit includes at least two field effect transistor stages with low transistors arranged as amplifiers and high...
6094571 Differential class AB mixer circuit  
A mixer circuit, and an associated method, mixes together differential input signals with differential mixing signals to form differential output signals. The differential output signals are...
6011965 Receiver with a tunable parallel resonant circuit  
In a receiver, a tunable parallel resonant circuit (PRC2) is coupled to an input (IN) of a transistor circuit (MOIC) via a coupling network (CNW). The coupling network (CNW) lacks a varicap diode...
5999138 Low power switched diversity antenna system  
A low power switched diversity antenna system (200) includes two varactor tuned antennas (205, 207), each including an antenna element (505) and a varactor (515). The varactor tuned antennas...
5822688 Method for enhancing the reception sensitivity in homodyne recievers  
In a homodyne receiver for the reception of a carrier frequency signal modulated with a low-frequency signal, the sensitivity of the detection of the low-frequency signal is enhanced by two...
Matches 1 - 50 out of 163 1 2 3 4 >