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Biasing circuits for voltage controlled or output circuits

專利號
US10868507B2
公開日期
2020-12-15
申請人
Ronald Quan
發(fā)明人
Ronald Quan
IPC分類
H03G1/00; H03F3/45; H03F1/02; H03G3/30
技術(shù)領(lǐng)域
voltage,fet,q1b,amplifier,vds,drain,q1a,or,rfb,r7
地域： CA CA Cupertino

摘要

A number of biasing circuits for amplifiers including voltage controlled amplifier is presented. Also a number of field effect transistor circuits include voltage controlled attenuators or voltage controlled processing circuits. Example circuits include modulators, lower distortion variable voltage controlled resistors, sine wave to triangle wave converters, and or servo controlled biasing circuits.

說明書

The circuits in FIG. 26, FIG. 27, and or FIG. 28 provides for improved noise performance by lowering the noise inherent in the first and second transistors such as Q1 and or Q2. One source of noise is the internal series base resistances in Q1 and or Q2, which generate shot noise and thermal noise. The circuits (e.g., components) associated with Q3 and Q4 such as A1, A2, A3, A4, R6, R7, R8, and or R9 help reduce thermal noise signal and or shot noise signal generated by Q1 and Q2 that is provided at the output collectors terminals of Q1 and Q2 (e.g., via load resistor R4 and or via load resistor R5).

權(quán)利要求

1
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