Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
AMPLIFIER CIRCUIT AND DRIVER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2022/018824
Kind Code:
A1
Abstract:
An amplifier circuit comprises a variable degeneration circuit (1) connected to emitter terminals of transistors (Q1, Q2), and a variable negative capacitance circuit (2) connected to differential output signal terminals (Voutp, Voutn). The variable degeneration circuit (1) comprises a variable capacitor (C1) and a resistor (R3). The variable negative capacitance circuit (2) consists of transistors (Q7, Q8), a capacitor (C2), and variable current sources (IS3, IS4).

More Like This:
JP5732014Doherty amplifier
JPS5446456HIGH-FREQUENCY AMPLIFIER OF VARIABLE BAND CHARACTERISTICS
JPS5369589INSULATING GATE TYPE FIELD EFFECT TRANSISTOR WITH PROTECTIVE DEVICE
Inventors:
JO TERUO (JP)
NAGATANI MUNEHIKO (JP)
NOSAKA HIDEYUKI (JP)
Application Number:
PCT/JP2020/028254
Publication Date:
January 27, 2022
Filing Date:
July 21, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H03F1/42; H03F1/32; H03F3/45
Foreign References:
JP2005073234A2005-03-17
JPH098565A1997-01-10
JP2018533890A2018-11-15
JPH0514079A1993-01-22
US4868421A1989-09-19
US20140253236A12014-09-11
US20180083584A12018-03-22
US20130215954A12013-08-22
Attorney, Agent or Firm:
YAMAKAWA, Shigeki et al. (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: DRIVER CIRCUIT

Next Patent: DRIVER CIRCUIT