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:
Dec. 29, 1992
Filed:
Sep. 18, 1990
Julius Lange, Sunnyvale, CA (US);
Timothy Halloran, Cupertino, CA (US);
Loral Aerospace Corp., New York, NY (US);
Abstract
An improved wideband double balanced GaAs mixer is presented and includes a plurality of FETs which are operative to couple a plurality of input signals to a diode ring quad wherein the signals are mixed, producing output IF signals composing multiples of the sum and difference frequency of the alternating input signals. In a first embodiment, a first pair of FETs is coupled to an input RF signal, and a second pair of FETs is coupled to an input LO signal. The first pair of FETs is driven in phase by the RF signal, while the second pair of FETs is driven in push-pull by the LO signal. This second pair of FETs is operative to alternately switch opposite sides of the diode ring quad into a conductive state wherein the mixing of the RF and LO signals take place.