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. 10, 2004
Filed:
Mar. 04, 2002
Lloyd L. Lautzenhiser, Sun Valley, NV (US);
Barry A. Lautzenhiser, Carson City, NV (US);
Emhiser Research, Inc., Verdi, NV (US);
Abstract
Variable phase-shifting rf power amplifiers ( ) shift rf outputs at any angle up to 90, 180, or 270 degrees, respectively, while maintaining an rf output substantially constant. The variable phase-shifting rf power amplifiers ( ) include two to four field-effect transistors (Q , Q , Q , Q ) that are interposed between phase splitters and combiners, and that are connected in series between a source voltage and a lower voltage. Phase shifting is achieved by selectively and variably controlling amplification of the field-effect transistors (Q , Q , Q , Q ). Selective and variable control of amplification is achieved by separately and variably controlling gate voltages of the field-effect transistors (Q , Q , Q , Q ), whereby a difference between the source voltage and the lower voltage is used selectively by one of the field-effect transistors (Q , Q , Q , Q ) and selectively proportioned between two of the field-effect transistors (Q , Q , Q , Q ). Phase controls ( ) generate separate and variable phase-shifting voltages, or gate voltages, in response to a variable phase-shifting voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile