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:
Jul. 04, 1989
Filed:
Mar. 01, 1988
Ramesh Pyndiah, Valenton, FR;
Patrice Gamand, Chennevieres/Marne, FR;
U.S. Philips Corporation, New York, NY (US);
Abstract
A mixer of the two-transistor type (T.sub.1, T.sub.2) arranged in series by a source S.sub.2 and a drain D.sub.1. A Gate G.sub.1 receives a radio frequency signal RF and a gate G.sub.2 a local oscillator signal L0. Matching networks R.sub.1 and R.sub.2 are provided for the respective signals RF and L0. One element of the network R.sub.3 positioned at the output (drain D.sub.2 of the transistor T.sub.2) restores a short-circuit at the frequency f.sub.L0 of the local oscillator. The instability of the input G.sub.2 of the transistor T.sub.2 is compensated for by an inductor element L inserted between the junction point of the source S.sub.2 and the drain D.sub.1 and the common-mode pole.