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. 01, 2013
Filed:
Sep. 21, 2011
Hiroshi Kamizuma, Kokubunji, JP;
Satoshi Tanaka, Kokubunji, JP;
Taizo Yamawaki, Tokyo, JP;
Yukinori Akamine, Kokubunji, JP;
Koji Maeda, Kokubunji, JP;
Hiroshi Kamizuma, Kokubunji, JP;
Satoshi Tanaka, Kokubunji, JP;
Taizo Yamawaki, Tokyo, JP;
Yukinori Akamine, Kokubunji, JP;
Koji Maeda, Kokubunji, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
A transceiver includes an oscillator and a plurality of communication blocks. Each of the communication blocks includes frequency dividers and mixers. Frequency dividing number of the frequency divider included in one communication block is set to an even-numbered integer, and transmission local signals supplied from the frequency dividers to the mixer become quadrature signals having a phase difference of 90 degrees. The frequency dividing number of another frequency divider in the another communication block is set to a non-integer, and communication local signals supplied from the frequency divider to the mixers become non-quadrature signals having a phase difference at a predetermined offset angle from 90 degrees. The transceiver further includes a converting unit for giving a compensation offset amount having almost the same absolute value and having a polarity opposite to that of the offset angle to communication analog signals related to the mixer of the another communication block.