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Class Information
Number: 330/305
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including frequency-responsive means in the signal transmission path > And tuning means
Description: Subject matter including a manually adjustable frequency selecting means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7459981 |
Circuits and methods for implementing transformer-coupled amplifiers at millimeter wave frequencies |
Dec. 2, 2008 |
| 7439811 |
Broadband low noise amplifier and RF signal amplification method of the same |
Oct. 21, 2008 |
| 7432767 |
Tunable low noise amplifier |
Oct. 7, 2008 |
| 7432763 |
Gain boosting for tuned differential LC circuits |
Oct. 7, 2008 |
| 7417508 |
Multiple RF path amplifiers |
Aug. 26, 2008 |
| 7411459 |
Current mode transconductor tuning device |
Aug. 12, 2008 |
| 7412219 |
High-frequency amplifier having simple circuit structure and television tuner using high-frequency amplifier |
Aug. 12, 2008 |
| 7405621 |
Apparatus for amplifying differential signal |
Jul. 29, 2008 |
| 7400203 |
Circuit with Q-enhancement cell having feedback loop |
Jul. 15, 2008 |
| 7394310 |
System and method for programmable switching characteristics of an analog switch in a transconductance amplifier |
Jul. 1, 2008 |
| 7391268 |
Power amplifying device comprising a stabilizing circuit |
Jun. 24, 2008 |
| 7382197 |
Adaptive tuning circuit to maximize output signal amplitude for an amplifier |
Jun. 3, 2008 |
| 7365606 |
Receiving amplifier, in particular for television receivers, and use of the receiving amplifier |
Apr. 29, 2008 |
| 7339437 |
Ultra-wideband constant gain CMOS amplifier |
Mar. 4, 2008 |
| 7332970 |
Integrated amplifier, electronic communication unit with integrated amplifier and method for operating the electronic communication unit with an integrated amplifier |
Feb. 19, 2008 |
| 7323939 |
Low noise amplifier for wideband tunable matching |
Jan. 29, 2008 |
| 7321273 |
Off-chip LC circuit for lowest ground and VDD impedance for power amplifier |
Jan. 22, 2008 |
| 7315212 |
Circuits and methods for implementing transformer-coupled amplifiers at millimeter wave frequencies |
Jan. 1, 2008 |
| 7282998 |
Method and apparatus for calibrating center frequency of power amplifier |
Oct. 16, 2007 |
| 7245187 |
Multi-standard amplifier |
Jul. 17, 2007 |
| 7202748 |
Ultra-wideband constant gain CMOS amplifier |
Apr. 10, 2007 |
| 7202747 |
Self-tuning variable impedance circuit for impedance matching of power amplifiers |
Apr. 10, 2007 |
| 7202740 |
Gain boosting for tuned differential LC circuits |
Apr. 10, 2007 |
| 7202734 |
Electronically tuned power amplifier |
Apr. 10, 2007 |
| 7193455 |
Programmable/tunable active RC filter |
Mar. 20, 2007 |
| 7183858 |
Wireless transmitter having multiple programmable gain amplifiers (PGAs) with tuned impedance to provide substantially linear magnitude and phase responses |
Feb. 27, 2007 |
| 7158772 |
Filter for broadcast receiver tuner |
Jan. 2, 2007 |
| 7151411 |
Amplifier system and method |
Dec. 19, 2006 |
| 7145395 |
Linear transconductance cell with wide tuning range |
Dec. 5, 2006 |
| 7123097 |
Ultra-wideband constant gain CMOS amplifier |
Oct. 17, 2006 |
| 7119631 |
Off-chip LC circuit for lowest ground and VDD impedance for power amplifier |
Oct. 10, 2006 |
| 7091784 |
Tunable circuit including a switchable inductor |
Aug. 15, 2006 |
| 7091792 |
Methods and apparatus for amplification in a tuner |
Aug. 15, 2006 |
| 7057464 |
Lineariser |
Jun. 6, 2006 |
| 7038548 |
Amplifier circuit for AM broadcasting |
May. 2, 2006 |
| 7019594 |
Method and apparatus for analyzing performance of a multi-stage radio frequency amplifier |
Mar. 28, 2006 |
| 7009455 |
Tunable power amplifier matching circuit |
Mar. 7, 2006 |
| 6980051 |
Gain adjusting and circuit arrangement |
Dec. 27, 2005 |
| 6977562 |
Self-tuned matching network for high efficient power amplifiers |
Dec. 20, 2005 |
| 6977555 |
Tuner circuit |
Dec. 20, 2005 |
| 6977542 |
Adjusting the trans-conductance of a filter |
Dec. 20, 2005 |
| 6963247 |
Gain stabilization technique for narrow band integrated low noise amplifiers |
Nov. 8, 2005 |
| 6958652 |
Transconductance varying circuit of transconductor circuit, varying bandwidth filter circuit using the same and digital tuning circuit of transconductor-capacitor filter |
Oct. 25, 2005 |
| 6949979 |
Designing methods and circuits for multi-band electronic circuits |
Sep. 27, 2005 |
| 6946914 |
Ultra-wideband constant gain CMOS amplifier |
Sep. 20, 2005 |
| 6933779 |
Variable gain low noise amplifier |
Aug. 23, 2005 |
| 6903612 |
Tunable low noise amplifier |
Jun. 7, 2005 |
| 6859097 |
Radio frequency feedback amplifier circuits |
Feb. 22, 2005 |
| 6859104 |
Tunable power amplifier matching circuit |
Feb. 22, 2005 |
| 6853249 |
Gm replica cell utilizing an error amplifier connected to a current mirror |
Feb. 8, 2005 |
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