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. 12, 2013
Filed:
Apr. 04, 2008
Integrated wideband rf tracking filter for rf front end with parallel band switched tuned amplifiers
Applicants:
Weinan Gao, San Diego, CA (US);
Ray Rosik, San Diego, CA (US);
Inventors:
Weinan Gao, San Diego, CA (US);
Ray Rosik, San Diego, CA (US);
Assignee:
NXP B.V., Einhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A wideband RF tracking filter having a set of parallel tuned resonator amplifier stages with a de-Q resistor for each subband is disclosed. The resonant amplifier contains programmable tuned LC tank impedance and an array of parallel voltage to current converters (V2I) for each subband. The de-Q resistor together with the array of V2I converters provides a flat gain over each subband and each of the other subbands covering different frequencies.