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. 05, 1998
Filed:
Jan. 29, 1996
Ken Tonegawa, Kyoto, JP;
Norio Nakajima, Takatsuki, JP;
Mitsuhide Kato, Shiga-ken, JP;
Koji Tanaka, Shiga-ken, JP;
Tatsuya Ueda, Kyoto, JP;
Koji Furutani, Shiga-ken, JP;
Abstract
A compact high frequency hybrid switch suitably operated in a diversity-type antenna system. A high frequency hybrid switch is comprised of: first to fourth ports; a first high frequency switch circuit for switching a connection established between the first port and the third port; and a second high frequency switch circuit for selecting one from two connections respectively established between the first port and the fourth port, and between the second port and the fourth port. The first and second high frequency switch circuits include respective series and parallel arrangements of diodes, capacitors and distributed constant signal lines which reduce the size and improve the reliability of the switch.