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:
Apr. 13, 2004
Filed:
Oct. 03, 2001
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A reception carrier wave, a first transmission carrier wave, and a second transmission carrier wave are generated. The reception carrier wave is mixed with the reception wave to produce a reception signal. The frequency of the first transmission carrier wave is halved, and the first transmission carrier wave is mixed with a transmission signal to produce a modulated wave. The second transmission carrier wave is mixed with the modulated wave to produce a transmission wave. Since neither the frequency of the first transmission carrier wave nor the frequency of the second transmission carrier wave agrees with each of the frequency of the modulated wave and the frequency fTX, the degradation of the modulation precision on a transmission side can be prevented. Also, because the frequency of the first transmission carrier wave is halved, the interference of the first transmission carrier wave with the transmission signal band can be reduced.