Amplifier with bias circuit providing improved linearity

Details Amplifier with bias circuit providing improved linearity Amplifier with bias circuit providing improved linearity

2011-03-22

2011-03-22

Choe, Henry K (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including plural stages cascaded

C330S296000

Reexamination Certificate

active

07911279

ABSTRACT:
An amplifying device includes a cascode amplifier and a biasing circuit. The cascode amplifier is configured to receive an input signal and to output an amplified output signal corresponding to the input signal. The biasing circuit is configured to bias the cascode amplifier, the biasing circuit including a first current mirror and a second current mirror stacked on the first current mirror. The biasing circuit improves linearity of the cascode amplifier across a wide temperature range.

REFERENCES:
patent: 4663599 (1987-05-01), Patch
patent: 6271695 (2001-08-01), Gramegna et al.
patent: 6778016 (2004-08-01), Luo
patent: 6987422 (2006-01-01), Vice

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