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:
Feb. 21, 1995
Filed:
Dec. 01, 1993
Kazuhiko Nakahara, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A switched line type 90.degree. phase shifter includes two single pole double throw switches, a reference transmission line having an electrical length of .alpha. connected between output terminals of the first and the second single pole double throw switches, a phase difference producing transmission line having an electrical length of (90.degree.+.alpha.) at a usage frequency, connected between other output terminals of the first and the second single pole double throw switches, and a phase inverting circuit switchablely connected for serial connection to and between two parts of the reference transmission line, which two parts produce the entirety of the reference transmission line, the one terminal of the first single pole double throw switch is an input terminal of the entire terminal and one terminal of the second single pole double throw switch is an output terminal.