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:
Sep. 04, 2007
Filed:
May. 28, 2004
Zaw Min Soe, Encinitas, CA (US);
Tony Yang, Whitford, CA (US);
Jackie Cheng, Irvine, CA (US);
Sining Zhou, Irvine, CA (US);
Kuangyu LI, Glendale, CA (US);
Fei-ran Yang, Diamond Bar, CA (US);
Shoufang Chen, Irvine, CA (US);
Tom Baker, Los Angeles, CA (US);
Zaw Min Soe, Encinitas, CA (US);
Tony Yang, Whitford, CA (US);
Jackie Cheng, Irvine, CA (US);
Sining Zhou, Irvine, CA (US);
Kuangyu Li, Glendale, CA (US);
Fei-Ran Yang, Diamond Bar, CA (US);
Shoufang Chen, Irvine, CA (US);
Tom Baker, Los Angeles, CA (US);
Wionics Research, Irvine, CA (US);
Abstract
Multistage RF transmitter and receiver circuits may use independently variable RF and IF local oscillators, allowing the RF and IF local oscillator frequencies for a given RF channel to be selected to have a large common factor with respect to the reference oscillator used by the local oscillator circuits, thus allowing the use of small divisor numbers in the local oscillator circuits and reducing phase noise. Independent high-side and low-side RF local oscillators may be provided and selectively used depending on the RF channel to be transmitted or received.