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. 15, 2009
Filed:
Apr. 04, 2006
Mihai A. T. Sanduleanu, Maastricht, NL;
Eduard F. Stikvoort, Eindhoven, NL;
Mihai A. T. Sanduleanu, Maastricht, NL;
Eduard F. Stikvoort, Eindhoven, NL;
NXP B.V., Eindhoven, NL;
Abstract
A sub-harmonic mixer circuit having an input stage () and a current modulating stage (is disclosed. The input stage () receives an RF input signal (RF+, RF−) at a first frequency and generates output currents (il , i) varying in dependence upon the Rf input signal. The current modulating stage () comprises a first transistor (Q) for receiving a first local oscillator signal (LO) respective and a second transistor (Q) for receiving a second local oscillator signal (LO), 180 degrees out of phase with the first local oscillator signal, such that a modulating current signal (iO), having twice the local oscillator frequency is superimposed onto the output currents.