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. 05, 2013
Filed:
Dec. 18, 2008
Applicant:
Akira Ando, Urayasu, JP;
Inventor:
Akira Ando, Urayasu, JP;
Assignee:
Soshin Electric Co., Ltd., Saku, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 1/10 (2006.01); H01P 1/15 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a high frequency switch wherein a first switch circuit is connected in series to a first λ/4 signal transmission path connected between an antenna connecting terminal and a transmission terminal. In the first switch circuit, a first λ/4 transmission path and a first parallel resonant circuit, which includes one first PIN diode, are connected in series. In a first inductor of the first parallel resonant circuit, a constant is set so that a resonance frequency of the first parallel resonant circuit and the center frequency of a first antenna switch are the same when the first PIN diode is turned off.