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:
Jun. 02, 2009
Filed:
Jul. 27, 2004
Kenichi Miyaguchi, Tokyo, JP;
Morishige Hieda, Tokyo, JP;
Tamotsu Nishino, Tokyo, JP;
Masatake Hangai, Tokyo, JP;
Moriyasu Miyazaki, Tokyo, JP;
Yukihisa Yoshida, Tokyo, JP;
Tadashi Takagi, Tokyo, JP;
Mikio Hatamoto, Tokyo, JP;
Kenichi Miyaguchi, Tokyo, JP;
Morishige Hieda, Tokyo, JP;
Tamotsu Nishino, Tokyo, JP;
Masatake Hangai, Tokyo, JP;
Moriyasu Miyazaki, Tokyo, JP;
Yukihisa Yoshida, Tokyo, JP;
Tadashi Takagi, Tokyo, JP;
Mikio Hatamoto, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A phase-shifting circuit includes: a first parallel circuit which is connected across input and output terminals of a high frequency signal, composed of a first inductor and a first switching element that exhibits a through state in an ON state and a capacitive property in an OFF state, and produces parallel resonance at a prescribed frequency when the first switching element is in the OFF state; a series circuit composed of a second inductor and a third inductor and connected in parallel with the first parallel circuit; a capacitor having its first terminal connected to a point of connection of the second and third inductors; and a second parallel circuit which is connected across a second terminal of the capacitor and a ground, composed of a fourth inductor and a second switching element that exhibits a through state in an ON state and a capacitive property in an OFF state, and produces parallel resonance at a prescribed frequency when the second switching element is in the OFF state. The phase-shifting circuit establishes by switching an operation mode of setting the first switching element at the ON state and the second switching element at the OFF state, or an operation mode of setting the first switching element at the OFF state and the second switching element at the ON state.