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:
Mar. 03, 2009
Filed:
Apr. 27, 2006
Tetsuro Asano, Gunma, JP;
Mikito Sakakibara, Saitama, JP;
Yuichi Kusaka, Gunma, JP;
Hidetoshi Ishihara, Tokyo, JP;
Tetsuro Asano, Gunma, JP;
Mikito Sakakibara, Saitama, JP;
Yuichi Kusaka, Gunma, JP;
Hidetoshi Ishihara, Tokyo, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A gate wiring electrode is formed into a ladder-like pattern. Moreover, between source electrodes and drain electrodes in the entire Switch MMIC, the gate wiring electrodes are disposed. Furthermore, at a cross part between the gate wiring electrode and the source electrode or the drain electrode, a nitride film having a large relative dielectric constant and a polyimide or a hollow part having a small relative dielectric constant are disposed. Accordingly, a capacitance at the cross part is reduced. Thus, a second harmonic wave level can be lowered. Moreover, a leak of a high-frequency signal between the drain electrode and the source electrode can be prevented. Thus, a third harmonic level can be lowered. Consequently, distortion characteristics of the Switch MMIC can be significantly improved.