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:
Aug. 18, 2015
Filed:
May. 23, 2012
Fuminori Sameshima, Tokyo, JP;
Masahiko Kohama, Tokyo, JP;
Takuo Morimoto, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A compact high frequency switch needing no external control signal is obtained. The high frequency switch includes an anti-parallel diode (first anti-parallel diode) having one end and another end coupled with an antenna terminal (first high-frequency-signal input/output terminal) and a transmitting terminal (second high-frequency-signal input/output terminal), respectively, and becoming a conduction state in the input power not less than predetermined high frequency power. When the high frequency switch is an SPDT type, such a switch may include a ¼-wavelength line in the use frequency of the high frequency switch having one end and another end coupled with the antenna terminal and a receiving terminal (third high-frequency-signal input/output terminal), respectively, and an anti-parallel diode (second anti-parallel diode) coupled between the receiving terminal and a ground and becoming a conduction state in the input power not less than predetermined high frequency power.