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:
Jul. 21, 1998
Filed:
Jan. 16, 1997
Taisuke Nakamura, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A circuit selection device includes a first terminal, a plurality of transmission lines, a plurality of second terminals, a plurality of loads for impedance matching, and a plurality of switches. An RF signal is input/output to/from the first terminal. Each transmission line has one end connected to the first terminal. Each of the second terminals is arranged in correspondence with the other end of each of the transmission lines to selectively input/output an RF signal input/output to/from the first terminal. Each load is arranged in correspondence with the other end of each of the transmission lines. Each switch is switched/connected to one of the second terminal and the load which correspond to the other end of each of the transmission lines. When one of the switches is switched to the second terminal side, the remaining switches are switched to the load side.