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BOCA PATENTS BY
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Time Lines

Cascode amplifier bias circuits

Invented by: Jonathan Klaren
San Diego, CA

Poojan Wagh
Sleepy Hollow, IL

David Kovac
Arlington Heights, IL

Eric S. Shapiro
San Diego, CA

Neil Calanca
Boca Raton, FL

Dan William Nobbe
Crystal Lake, IL

Christopher Murphy
Arlington Heights, IL

Robert Mark Englekirk
Littleton, CO

Emre Ayranci
Costa Mesa, CA

Keith Bargroff
San Diego, CA

Tero Tapio Ranta
San Diego, CA Applicant: Name City State Country Type pSemi Corporation San Diego CA US

Originally Assigned to: pSemi Corporation
San Diego, CA Family ID: 1000003922003
[Now assigned to . . .]

Issued:2019-04-02
Filed:2016-09-16
Application No:15268229
Examined by:Nguyen; Patricia T

Bias circuits and methods for silicon-based amplifier architectures that are tolerant of supply and bias voltage variations, bias current variations, and transistor stack height, and compensate for poor output resistance characteristics. Embodiments include power amplifiers and low-noise amplifiers that utilize a cascode reference circuit to bias the final stages of a cascode amplifier under the control of a closed loop bias control circuit. The closed loop bias control circuit ensures that the current in the cascode reference circuit is approximately equal to a selected multiple of a known current value by adjusting the gate bias voltage to the final stage of the cascode amplifier. The final current through the cascode amplifier is a multiple of the current in the cascode reference circuit, based on a device scaling factor representing the relative sizes of the transistor devices in the cascode amplifier and in the cascode reference circuit.

[pdf] U.S. Pat. No. 10,250,199

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