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Class Information
Number: 330/284
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including gain control means > Having attenuation means in signal transmission path
Description: Subject matter having attenuation means in signal transmission path that controls the gain of the amplifier.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7443243 |
High frequency amplifier having an attenuator |
Oct. 28, 2008 |
| 7424120 |
Method and apparatus for volume control |
Sep. 9, 2008 |
| 7421255 |
Transmission apparatus and mobile communication terminal apparatus |
Sep. 2, 2008 |
| 7408411 |
High linearity programmable gain amplifier using switch |
Aug. 5, 2008 |
| 7382190 |
Variable attenuation system having continuous input steering |
Jun. 3, 2008 |
| 7378881 |
Variable gain amplifier circuit |
May. 27, 2008 |
| 7375587 |
Variable-gain amplifier with high linearity as to gain variations |
May. 20, 2008 |
| 7362177 |
Interpolator having dual transistor ranks and ratiometric control |
Apr. 22, 2008 |
| 7362178 |
Wide dynamic range amplifier gain control |
Apr. 22, 2008 |
| 7355476 |
Input stage for an amplifier |
Apr. 8, 2008 |
| 7345546 |
Amplifier circuit and input circuit |
Mar. 18, 2008 |
| 7346317 |
Dynamic gain and phase compensation for power amplifier load switching |
Mar. 18, 2008 |
| 7336131 |
Gigabit ethernet transceiver with analog front end |
Feb. 26, 2008 |
| 7336130 |
Attenuator, variable gain amplifier using the same, and electronic equipment |
Feb. 26, 2008 |
| 7323933 |
Vector modulator having attenuators with continuous input steering |
Jan. 29, 2008 |
| 7298855 |
Volume circuit using resistive ladder circuits |
Nov. 20, 2007 |
| 7298215 |
Amplifying circuit |
Nov. 20, 2007 |
| 7292100 |
Interpolated variable gain amplifier with multiple active feedback cells |
Nov. 6, 2007 |
| 7259620 |
Wide dynamic range switching variable gain amplifier and control |
Aug. 21, 2007 |
| 7259629 |
Variable gain amplifier with improved control characteristics linearity |
Aug. 21, 2007 |
| 7248118 |
Radio frequency power amplifier module |
Jul. 24, 2007 |
| 7242267 |
Interpolating programmable gain attenuator |
Jul. 10, 2007 |
| 7239205 |
High frequency amplifier circuit and mobile communication terminal using the same |
Jul. 3, 2007 |
| 7209001 |
Offset compensation circuit for a monitoring photodiode |
Apr. 24, 2007 |
| 7202734 |
Electronically tuned power amplifier |
Apr. 10, 2007 |
| 7199664 |
Integrated switchless programmable attenuator and low noise amplifier |
Apr. 3, 2007 |
| 7196577 |
Amplifier with capacitor selection |
Mar. 27, 2007 |
| 7190221 |
Method and apparatus for maintaining constant linearity for a power amplifier over varying load conditions |
Mar. 13, 2007 |
| 7183854 |
Programmable gain instrumentation amplifier including a composite amplifier for level shifting and improved signal-to-noise ratio |
Feb. 27, 2007 |
| 7167718 |
Transmission power control apparatus, transmission power control method, and mobile station |
Jan. 23, 2007 |
| 7148750 |
Gigabit ethernet transceiver with analog front end |
Dec. 12, 2006 |
| 7138869 |
Amplifier circuit |
Nov. 21, 2006 |
| 7135942 |
Interpolating programmable gain attenuator |
Nov. 14, 2006 |
| 7123089 |
Power amplifier with pulse differentiating circuit |
Oct. 17, 2006 |
| 7102428 |
Large dynamic range programmable gain attenuator |
Sep. 5, 2006 |
| 7102441 |
Variable gain amplifying circuit |
Sep. 5, 2006 |
| 7098738 |
Fine step and large gain range programmable gain amplifier |
Aug. 29, 2006 |
| 7081796 |
Radio frequency low noise amplifier with automatic gain control |
Jul. 25, 2006 |
| 7071782 |
HF amplifier with switchable gain |
Jul. 4, 2006 |
| 7068108 |
Amplifier apparatus and method |
Jun. 27, 2006 |
| 7053715 |
Gigabit Ethernet transceiver with analog front end |
May. 30, 2006 |
| 7038545 |
Gigabit ethernet transceiver with analog front end |
May. 2, 2006 |
| 7026875 |
System and method for a programmable gain amplifier |
Apr. 11, 2006 |
| 7023278 |
Digital power amplifier level control |
Apr. 4, 2006 |
| 6980056 |
Multiple stage attenuator |
Dec. 27, 2005 |
| 6965837 |
Method and arrangement for detecting load mismatch, and a radio device utilizing the same |
Nov. 15, 2005 |
| 6958648 |
Programmable gain amplifier with glitch minimization |
Oct. 25, 2005 |
| 6941122 |
Circuit for compensating temperature of automatic gain control circuit |
Sep. 6, 2005 |
| 6937846 |
Pin diode circuit arrangement |
Aug. 30, 2005 |
| 6930554 |
Variable gain low noise amplifier and method |
Aug. 16, 2005 |
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