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:
Nov. 01, 2011
Filed:
Sep. 12, 2008
Ichiro Aoki, San Clemente, CA (US);
Seyed-ali Hajimiri, Pasadena, CA (US);
David B. Ruthledge, Pasadena, CA (US);
Scott D. Kee, Dana Point, CA (US);
Ichiro Aoki, San Clemente, CA (US);
Seyed-Ali Hajimiri, Pasadena, CA (US);
David B. Ruthledge, Pasadena, CA (US);
Scott D. Kee, Dana Point, CA (US);
California Institute of Technology, Woburn, MA (US);
Abstract
The present invention discloses a distributed power amplifier topology and device that efficiently and economically enhances the power output of an RF signal to be amplified. The power amplifier comprises a plurality of push-pull amplifiers interconnected in a novel circular geometry that preferably function as a first winding of an active transformer having signal inputs of adjacent amplification devices driven with an input signal of equal magnitude and opposite phase. The topology also discloses the use of a secondary winding that matches the geometry of primary winding and variations thereof that serve to efficiently combine the power of the individual power amplifiers. The novel architecture enables the design of low-cost, fully-integrated, high-power amplifiers in the RF, microwave, and millimeter-wave frequencies.