Controlled impedance bias circuit

Details Controlled impedance bias circuit Controlled impedance bias circuit

2006-05-30

2006-05-30

Choe, Henry (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

C330S285000

Reexamination Certificate

active

07053716

ABSTRACT:
A bias circuit is provided to present a controlled impedance to an input of an RF amplifier to improve linearity of the RF amplifier. The bias circuit may control the impedance such that a low impedance is presented to the input of the amplifier at low frequencies and a high impedance is presented to the input of the amplifier at high frequencies.

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“High-Frequency Anaylsis of Linearity Improvement Technique of Common-Emitter Transconductance Stage Using a Low-Frequency-Trap Network”, Keng Leong Fong, IEEE Journal of Solid-State Circuits, vol. 35, No. 8, Aug. 2000.

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