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:
May. 27, 1986
Filed:
Mar. 26, 1984
Hiroshi Ohnishi, Tokyo, JP;
Sadahiko Yamashita, Sagamihara, JP;
Abstract
In a GaAs FET microwave mixer, a gate of the FET is used to receive a radio frequency input signal, while a source of the same is used to inject a local oscillator signal therethrough so as to develop an intermediate frequency signal at a drain of the FET. The mixer of the invention comprises, in addition to such an FET, first and second particular circuits respectively connected to the source, where the first circuit is arranged to exhibit a short-circuited impedance at a frequency band of the radio frequency input signal, and the second circuit is arranged to exhibit an open-circuited impedance at a frequency band of the local oscillator signal. The first and second circuits may be actualized by distributed constant circuits, such as stubs, or by lumped constant circuits, such as resonance circuits.