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. 03, 2017
Filed:
Feb. 19, 2016
Renesas Electronics Corporation, Tokyo, JP;
Satoru Tomisawa, Tokyo, JP;
Renesas Electronics Corporation, Tokyo, JP;
Abstract
A communication device includes a communication circuit capable of switching a reception or a transmission of a desired frequency signal through an antenna. The circuit includes an oscillator that oscillates a first frequency signal according to the desired frequency signal at a receiving time, a first divider that outputs a second frequency signal obtained by dividing the first frequency signal into two, a second divider that outputs a third frequency signal obtained by dividing the second frequency signal into two, a first mixer that mixes the reception signal received through the antenna and the first frequency signal and outputs an intermediate frequency signal, a second mixer that mixes the intermediate frequency signal and the third frequency signal and outputs a baseband signal, a third mixer capable of mixing the output from the first divider and the output from the second divider, and a filter circuit that eliminates a signal component of the frequency of an output signal from the third mixer from the reception signal at the receiving time.