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Class Information
Number: 327/359
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Specific input to output function > Combining of plural signals > Product > Differential amplifier
Description: Subject matter wherein a circuit amplifies only the differences between the two input signals and suppresses the input signals when they have identical signals.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616045 |
Mixer with balanced local oscillator signal |
Nov. 10, 2009 |
| 7602227 |
Differential amplifier circuit and mixer circuit having improved linearity |
Oct. 13, 2009 |
| 7595666 |
Amplifier circuit for double sampled architectures |
Sep. 29, 2009 |
| 7589579 |
Mixer circuit |
Sep. 15, 2009 |
| 7583752 |
Transmitter for outputting differential signals of different voltage levels |
Sep. 1, 2009 |
| 7577418 |
Sub-harmonic mixer and down converter with the same |
Aug. 18, 2009 |
| 7573302 |
Differential signal comparator |
Aug. 11, 2009 |
| 7570099 |
Conversion mixer with high impedance circuit |
Aug. 4, 2009 |
| 7565128 |
High performance low noise amplifier |
Jul. 21, 2009 |
| 7554381 |
Mixer amplifier and radiofrequency front-end circuit |
Jun. 30, 2009 |
| 7555263 |
Adaptive radio transceiver |
Jun. 30, 2009 |
| 7554380 |
System for reducing second order intermodulation products from differential circuits |
Jun. 30, 2009 |
| 7542751 |
Down-converter and calibration method thereof |
Jun. 2, 2009 |
| 7538596 |
Low distortion quadrature mixer and method therefor |
May. 26, 2009 |
| 7532055 |
CMOS-based receiver for communications applications |
May. 12, 2009 |
| 7528668 |
Differential amplifier, differential amplifying method, and phase locked loop and delay locked loop using the same |
May. 5, 2009 |
| 7521981 |
Mixer with carrier leakage calibration |
Apr. 21, 2009 |
| 7514981 |
Mixer circuit |
Apr. 7, 2009 |
| 7512394 |
Wideband up-conversion mixer |
Mar. 31, 2009 |
| 7511557 |
Quadrature mixer circuit and RF communication semiconductor integrated circuit |
Mar. 31, 2009 |
| 7509112 |
Wideband image rejection mixer |
Mar. 24, 2009 |
| 7508881 |
Current mode differential transmission method and system for transmitting three units of data using four signal lines |
Mar. 24, 2009 |
| 7505750 |
Mixer transconductance in RF transceiver |
Mar. 17, 2009 |
| 7498861 |
Mixer |
Mar. 3, 2009 |
| 7496342 |
Down-converting electromagnetic signals, including controlled discharge of capacitors |
Feb. 24, 2009 |
| 7482852 |
Inductor-less local oscillator buffer |
Jan. 27, 2009 |
| 7477077 |
Apparatus and method for loss of signal detection in a receiver |
Jan. 13, 2009 |
| 7477704 |
Digital signal detection for high speed signaling systems |
Jan. 13, 2009 |
| 7457346 |
Spread-spectrum signal generator |
Nov. 25, 2008 |
| 7453104 |
Operational amplifier including low DC gain wideband feed forward circuit and high DC gain narrowband gain circuit |
Nov. 18, 2008 |
| 7449923 |
Amplifier circuit for double sampled architectures |
Nov. 11, 2008 |
| 7449934 |
CMOS mixer for use in direct conversion receiver |
Nov. 11, 2008 |
| 7446584 |
Time delay apparatus and method of using same |
Nov. 4, 2008 |
| 7425856 |
Phase interpolator with output amplitude correction |
Sep. 16, 2008 |
| 7417486 |
Voltage-current conversion circuit, amplifier, mixer circuit, and mobile appliance using the circuit |
Aug. 26, 2008 |
| 7408994 |
AC coupling system for wide band digital data with dynamic AC load |
Aug. 5, 2008 |
| 7405608 |
Modulator apparatus operating at low supply voltage, and corresponding method of modulation |
Jul. 29, 2008 |
| 7400184 |
Current mode multiplier based on square root voltage-current relationship of MOS transistor |
Jul. 15, 2008 |
| 7382175 |
Frequency mixer preventing degradation in linearity on amplitude of input signal |
Jun. 3, 2008 |
| 7375577 |
Mixer capable of detecting or controlling common mode voltage thereof |
May. 20, 2008 |
| 7375559 |
Differential comparator with a replica input stage to set the accurate bias current for improved common mode rejection |
May. 20, 2008 |
| 7355466 |
Passive mixer with direct current bias |
Apr. 8, 2008 |
| 7345541 |
Apparatus for variable gain amplifiers and mixers |
Mar. 18, 2008 |
| 7342432 |
Mixer circuit having improved linearity and noise figure |
Mar. 11, 2008 |
| 7327184 |
Low-power multi-level pulse amplitude modulation driver and semiconductor device having the driver |
Feb. 5, 2008 |
| 7324799 |
Multiband mixer |
Jan. 29, 2008 |
| 7315192 |
CMOS-based receiver for communications applications |
Jan. 1, 2008 |
| 7298195 |
Methods and apparatus for improved phase switching and linearity in an analog phase interpolator |
Nov. 20, 2007 |
| 7289783 |
Mixer circuits and methods with matched bias currents |
Oct. 30, 2007 |
| 7282982 |
Mixer-system with gain-blocks and switches |
Oct. 16, 2007 |
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