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Class Information
Number: 330/297
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including particular power supply circuitry
Description: Subject matter including specific details or distinctive characteristics of the source of electrical energy applied to the semiconductor amplifying device.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7459978 |
Ground skimming output stage |
Dec. 2, 2008 |
| 7449954 |
Fast settling power amplifier regulator |
Nov. 11, 2008 |
| 7447485 |
Device and method for controlling a voltage control signal |
Nov. 4, 2008 |
| 7443244 |
Method and apparatus for controlling a power amplifier supply voltage |
Oct. 28, 2008 |
| 7436967 |
Apparatus and method of limiting power applied to a loudspeaker |
Oct. 14, 2008 |
| 7427897 |
Power amplifier with close-loop adaptive voltage supply |
Sep. 23, 2008 |
| 7423490 |
Wideband high frequency chokes |
Sep. 9, 2008 |
| 7420421 |
Open-loop RF transmitter output power control for increased power efficiency |
Sep. 2, 2008 |
| 7420415 |
Method and apparatus for controlling a power amplifier in a mobile communication system |
Sep. 2, 2008 |
| 7420422 |
Audio amplifier driven by single voltage source and related voltage supply circuit |
Sep. 2, 2008 |
| 7421256 |
Low noise switching voltage regulator |
Sep. 2, 2008 |
| 7420411 |
Voltage control circuit and method for supplying an electrical component with a supply voltage |
Sep. 2, 2008 |
| 7417502 |
Selectable power supply for audio amplifier |
Aug. 26, 2008 |
| 7408403 |
Circuits and methods for amplifying signals |
Aug. 5, 2008 |
| 7408414 |
Distributed class G type amplifier switching method |
Aug. 5, 2008 |
| 7405618 |
Method and apparatus for controlling a power amplifier in a mobile communication system |
Jul. 29, 2008 |
| 7391261 |
Enhanced bandwidth envelope elimination and restoration |
Jun. 24, 2008 |
| 7382195 |
Power supply device for driving an amplifier |
Jun. 3, 2008 |
| 7372333 |
Monolithic supply-modulated RF power amplifier and DC-DC power converter IC |
May. 13, 2008 |
| 7349679 |
Integrated power amplifier |
Mar. 25, 2008 |
| 7348853 |
Power detector for mismatched load |
Mar. 25, 2008 |
| 7348847 |
Integrated implementation of a collector boost scheme and method therefor |
Mar. 25, 2008 |
| 7342457 |
Cross-differential amplifier |
Mar. 11, 2008 |
| 7339426 |
High efficiency linear amplifier employing dynamically controlled back off |
Mar. 4, 2008 |
| 7339997 |
Line driver and method of operating the same |
Mar. 4, 2008 |
| 7323854 |
Zero cancellation in multiloop regulator control scheme |
Jan. 29, 2008 |
| 7321750 |
Communication system, device and method |
Jan. 22, 2008 |
| 7315211 |
Sliding bias controller for use with radio frequency power amplifiers |
Jan. 1, 2008 |
| 7312655 |
Apparatus and method for controlling bias adaptation bias of a high power amplifier |
Dec. 25, 2007 |
| 7298214 |
Amplifying circuit with variable supply voltage |
Nov. 20, 2007 |
| 7298210 |
Fast settling, low noise, low offset operational amplifier and method |
Nov. 20, 2007 |
| 7295075 |
OFDM amplifier and method therefor |
Nov. 13, 2007 |
| 7292105 |
Power control and modulation of switched-mode power amplifiers with one or more stages |
Nov. 6, 2007 |
| 7268618 |
Power amplifiers |
Sep. 11, 2007 |
| 7265614 |
Amplifier circuit with reduced power-off transients and method thereof |
Sep. 4, 2007 |
| 7262663 |
Ultra high linearity amplifier |
Aug. 28, 2007 |
| 7259630 |
Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter |
Aug. 21, 2007 |
| 7250820 |
Power distribution and biasing in RF switch-mode power amplifiers |
Jul. 31, 2007 |
| 7250818 |
RF power amplifier circuit and RF transmitter and terminal including it |
Jul. 31, 2007 |
| 7245185 |
Controlling a power converter |
Jul. 17, 2007 |
| 7242250 |
Power amplifier |
Jul. 10, 2007 |
| 7239206 |
Ultracapacitor audio amplifier |
Jul. 3, 2007 |
| 7239201 |
Apparatus for controlling modulation of an alternating waveform on a DC voltage signal within a low-noise block controller |
Jul. 3, 2007 |
| 7233131 |
Circuit and method for implementing a multi-function pin on a PWM controller chip in a voltage converter |
Jun. 19, 2007 |
| 7227419 |
Power distribution and biasing in RF switch-mode power amplifiers |
Jun. 5, 2007 |
| 7212069 |
Power control and modulation of switched-mode power amplifiers with one or more stages |
May. 1, 2007 |
| 7205840 |
Wideband CMOS gain stage |
Apr. 17, 2007 |
| 7202745 |
Power amplifier circuit |
Apr. 10, 2007 |
| 7199655 |
Multistage amplifier circuit without interstage coupling capacitor |
Apr. 3, 2007 |
| 7196584 |
Amplifier circuit |
Mar. 27, 2007 |
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