The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 2007
Filed:
Nov. 29, 2004
Grant A. Ellis, Seattle, WA (US);
Grant A. Ellis, Seattle, WA (US);
HRL Laboratories, LLC, Malibu, CA (US);
Abstract
A compact amplifier output bias circuit is used as a broadband harmonic termination. The bias circuit is adapted as a harmonic termination circuit to produce an effective low impedance at the signal harmonic frequencies while having the capability of supplying DC power to the amplifier stage, optionally, if needed. A pi network is coupled to an active device output through a predetermined length of transmission line tuned for optimum power added efficiency in the frequency band of operation and provides a low impedance at frequency bands above the frequency band of operation while allowing DC bias to be appliable to the active device output.