ClassID:

219160

H03F1/306 - CPC Classification

Classification description:

Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements; Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in junction-FET amplifiers

Recent Application in this class:
#1
20260051865
2026-02-19

HIGH PRECISION JFET AMPLIFIER

#2
20260045920
2026-02-12

COMPOUND SEMICONDUCTOR AMPLIFIER AND CIRCUIT MODULE

#3
20240039496
2024-02-01

CIRCUIT FOR REMOVING OFFSET OUTPUT VOLTAGE, AND ELECTRONIC DEVICE COMPRISING SAME

#4
20230006610
2023-01-05

Thermal temperature sensors for power amplifiers

#5
20210152131
2021-05-20

Thermal temperature sensors for power amplifiers

#6
20210067101
2021-03-04

Operational amplifier

#7
20200373888
2020-11-26

Power amplifier system

#8
20200076374
2020-03-05

Methods and apparatus for voltage buffering

#9
20200067465
2020-02-27

Phase shifters for gallium nitride amplifiers and related methods

#10
20190288737
2019-09-19

RF metrology system for a substrate processing apparatus incorporating RF sensors with corresponding lock-in amplifiers

#11
20190190456
2019-06-20

Amplifier having a switchable current bias circuit

#12
20180109228
2018-04-19

PHASE SHIFTERS FOR GALLIUM NITRIDE AMPLIFIERS AND RELATED METHODS

#13
20180090476
2018-03-29

COMPOUND SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME

#14
20180013465
2018-01-11

Multi-mode radio frequency circuitry

#15
20130207726
2013-08-15

Amplification device and amplification method

#16
20130002358
2013-01-03

Electronic circuitry for high-temperature environments

#17
20120256761
2012-10-11

Wireless telemetry electronic circuitry for measuring strain in high-temperature environments

#18
20110181324
2011-07-28

Self-adjusting gate bias network for field effect transistors

#19
20110080230
2011-04-07

Bias circuit

#20
20100127776
2010-05-27

Amplifier with bias circuit providing improved linearity

#21
20100039290
2010-02-18

Wireless telemetry electronic circuitry for measuring strain in high-temperature environments

#22
20100039168
2010-02-18

Bias network

#23
20060114059
2006-06-01

Power amplifier with controllable feedback loop

#24
20060091956
2006-05-04

Amplifying a signal using a control modulator that provides a bias resistance

#25
20050168286
2005-08-04

Bias circuit with threshold voltage change compensation function and temperature change compensation function

#26
20050134389
2005-06-23

DC-coupled multi-stage amplifier using all-pass resistive/capacitive network for level shifting

#27
20050088236
2005-04-28

Power amplifier module