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:
Jan. 05, 2010
Filed:
Jul. 19, 2005
Nobuhiro Shiramizu, Kokubunji, JP;
Takahiro Nakamura, Kokubunji, JP;
Toru Masuda, Kokubunji, JP;
Nobuhiro Kasa, Yoshii, JP;
Hiroshi Mori, Takasaki, JP;
Nobuhiro Shiramizu, Kokubunji, JP;
Takahiro Nakamura, Kokubunji, JP;
Toru Masuda, Kokubunji, JP;
Nobuhiro Kasa, Yoshii, JP;
Hiroshi Mori, Takasaki, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
Semiconductor devices are provided with high performance high-frequency circuits in which interference caused by inductors is reduced. In a semiconductor device including a modulator circuit to modulate a carrier wave by a base band signal to output an RF signal and a demodulator circuit to demodulate the RF signal by use of the carrier wave to gain the base band signal and a local oscillator to generate the carrier wave, inductors respectively having a closed loop wire are adopted. Interference caused by mutual inductance is reduced by the closed loop wire. For example, where inductors are adopted in the modulator circuit, a closed loop wire is disposed around the outer periphery of the inductors.