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:
Mar. 05, 2019
Filed:
Feb. 21, 2018
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Minato-ku, Tokyo, JP;
Yousuke Hagiwara, Kawasaki Kanagawa, JP;
Shigehito Saigusa, Yokohama Kanagawa, JP;
Mitsuyuki Ashida, Yokohama Kanagawa, JP;
Yuki Fujimura, Ota Tokyo, JP;
Ichiro Seto, Fuchu Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Abstract
A carrier leakage correction method for a quadrature modulator according to an embodiment includes inputting a test signal with a frequency fto a transmitter and up-converting the test signal with a frequency fand down-converting with the frequency f. A frequency 2fcomponent is detected in the down-converted test signal. One or a plurality of parameters of the transmitter is/are adjusted so as to reduce a magnitude of the detected frequency 2fcomponent in the test signal.