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. 01, 2005
Filed:
Aug. 10, 1999
Stephen L. Lloyd, Irvine, CA (US);
Keith J. Rampmeier, Costa Mesa, CA (US);
Stephen L. Lloyd, Irvine, CA (US);
Keith J. Rampmeier, Costa Mesa, CA (US);
Skyworks Solutions Inc., Irvine, CA (US);
Abstract
An apparatus for modifying a radio frequency signal includes a mixer core, an input circuit and an interface circuit. The mixer core receives a first signal having a first frequency and a second signal having a second frequency, and outputs a third signal which is a function of the first and second signals. The input circuit sets a predetermined bias current, receives a radio frequency (RF) signal and inputs the RF signal into the mixer core. The interface circuit is interposed between the mixer core and the input circuit. The interface circuit receives the bias current and input it to the mixer core. In one embodiment, the input circuit includes a transistor and the interface circuit includes a transformer.