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Class Information
Number: 330/302
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including frequency-responsive means in the signal transmission path
Description: Subject matter including frequency-responsive means in the signal transmission path that causes corresponding changes in the amplifier gain.










Sub-classes under this class:

Class Number Class Name Patents
330/306 And bandpass, broadband (e.g., wideband) or sidepass means 358
330/304 And equalizing means 114
330/305 And tuning means 261
330/303 Including an active device in the filter means 127


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Patent Number Title Of Patent Date Issued
6614854 System and method for adaptive predistortion Sep. 2, 2003
6606002 Common device node balun grounded balanced amplifier Aug. 12, 2003
6606000 Radio-frequency amplifier, radio-frequency module and communication device Aug. 12, 2003
6603359 High-frequency power amplifying apparatus Aug. 5, 2003
6603351 Power amplifier with gain change compensation Aug. 5, 2003
6591139 Low-power, high-modulation-index amplifier for use in battery-powered device Jul. 8, 2003
6586993 Impedance matching low noise amplifier having a bypass switch Jul. 1, 2003
6577199 Harmonic matching network for a saturated amplifier Jun. 10, 2003
6573797 High-frequency power amplifier Jun. 3, 2003
6570451 High-frequency power amplifier May. 27, 2003
6566953 High-frequency amplifier circuit for UHF television tuner having less distortion May. 20, 2003
6556085 Low power low noise amplifier Apr. 29, 2003
6552610 Transmission-line tuned switching power amplifier Apr. 22, 2003
6552634 Wideband, minimum-rating filters and multicouplers for power amplifiers Apr. 22, 2003
6549077 Integrated inductor for RF transistor Apr. 15, 2003
6549076 High-output amplifier Apr. 15, 2003
6545542 Power amplifier with coupler for cross-coupling amplifiers for reduction of differential frequency component Apr. 8, 2003
6545536 Biasing circuit for VGS drift and thermal compensation of a power device Apr. 8, 2003
6545540 Current mirror-embedded low-pass filter for subscriber line interface circuit applications Apr. 8, 2003
6538515 Power amplifier and method of operating a power amplifier having multiple output-power modes Mar. 25, 2003
6535069 High-frequency power amplifier module Mar. 18, 2003
6522201 RF amplifier having switched load impedance for back-off power efficiency Feb. 18, 2003
6504434 Method for configuring low-noise integrated amplifier circuits Jan. 7, 2003
6501331 Multi-band amplifier Dec. 31, 2002
6501335 Semiconductor circuit with a stabilized gain slope Dec. 31, 2002
6498535 High dynamic range low noise amplifier Dec. 24, 2002
6496072 Amplifying apparatus for a mobile station receiver and method for controlling the same Dec. 17, 2002
6489843 Power amplifier and communication unit Dec. 3, 2002
6489838 Apparatus and method for equalizing received network signals using a single zero high-pass filter having selectable impedance Dec. 3, 2002
6489862 Method for reducing noise generated in a power amplifier Dec. 3, 2002
6486808 Data signal amplifier with automatically controllable dynamic signal range Nov. 26, 2002
6483385 Signal amplification circuit with unequal top and bottom surface areas Nov. 19, 2002
6476679 Semiconductor circuit with a stabilized gain slope Nov. 5, 2002
6466094 Gain and bandwidth enhancement for RF power amplifier package Oct. 15, 2002
6466095 Power amplifier Oct. 15, 2002
6462620 RF power amplifier circuitry and method for amplifying signals Oct. 8, 2002
6462622 High-frequency amplifier and high-frequency multistage amplifier Oct. 8, 2002
6456163 High-frequency amplifier circuit having a directly-connected bias circuit Sep. 24, 2002
6452456 Fast-setting, low power, jammer insensitive, biasing apparatus and method for single-ended circuits Sep. 17, 2002
6441689 Transistor amplifier providing improved linear and return loss performance characteristics Aug. 27, 2002
6437649 Microwave amplifier Aug. 20, 2002
6433642 Impedance matched frequency dependent gain compensation network for multi-octave passband equalization Aug. 13, 2002
6424223 MMIC power amplifier with wirebond output matching circuit Jul. 23, 2002
6424226 Two-port with a frequency-dependent network Jul. 23, 2002
6417735 Amplifier with bias compensation using a current mirror circuit Jul. 9, 2002
6407640 Two-stage LNA with good linearity Jun. 18, 2002
6400226 Distributed amplifier with improved flatness of frequency characteristic Jun. 4, 2002
6396348 Circuit for dealing with higher harmonics and circuit for amplifying power efficiency May. 28, 2002
6393259 Amplifier circuit and transceiver May. 21, 2002
6392491 High-frequency amplifier and amplification element May. 21, 2002

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