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:
Apr. 17, 2012
Filed:
Jul. 24, 2008
Applicants:
Hong Yean Hsieh, Kaohsiung, TW;
Chia-liang Lin, Fremont, CA (US);
Inventors:
Hong Yean Hsieh, Kaohsiung, TW;
Chia-Liang Lin, Fremont, CA (US);
Assignee:
Realtek Semiconductor Corp., Hsinchu, TW;
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A low flicker noise active mixer comprises a trans-conductance section, a switching quad, and a load section. The trans-conductance section converts a voltage signal pair into a first current signal pair. The switching quad converts the first current signal pair into a second signal pair in a manner controlled by a LO (local oscillator) signal pair. The load section provides a loading to the second current signal pair using a pair of commutative active loads to convert the second current signal pair into an output voltage signal pair.