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:
Jul. 16, 2019
Filed:
Nov. 29, 2017
The Regents of the University of California, Oakland, CA (US);
Yu Ye, Davis, CA (US);
Adrian J. Tang, Ontario, CA;
Qun Gu, Davis, CA (US);
Brian J. Drouin, Pasadena, CA (US);
The Regents of the University of California, Oakland, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
The disclosed embodiments relate to the design of a high-speed frequency doubler circuit. During operation, the circuit uses a transformer-based balun to convert a single-ended input signal into a differential signal, wherein the transformer-based balun includes a transformer with a primary coil, which receives the single-ended input signal, and a secondary coil, which produces the differential signal. The transformer also includes a central compensation capacitor coupled between a center tap of the secondary coil and ground, wherein the central compensation capacitor acts to suppress common-mode components in the differential signal. Next, the circuit uses a pseudo-differential amplifier to convert the differential signal into a single-ended output signal, which has double the frequency of the single-ended input signal.