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. 17, 2001
Filed:
Feb. 09, 1999
Kenichi Torii, Fujisawa, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A radio communication apparatus comprises an analog I/Q signal generator, a digital demodulator, and an interference wave suppression control block. The interference wave suppression block detects a gain difference between an in-phase component and a double quadrature component, based on an input and output signals of a low pass filter in the digital demodulator and the output of the double quadrature mixer, and controls a reference voltage of an A/D converter in the digital demodulator. Therefore, it is possible to reduce the gain difference of the in-phase component and the quadrature component, and to effectively eliminate an interference wave mixed in a base band signal. Furthermore, a radio communication apparatus according to the present invention comprises an antenna input block, a reception block, a transmission block, and an in/out block. Because a frequency when sending data is equal to the frequency when receiving data, it is possible to quickly change transmission and reception. Accordingly, it is possible to effectively use time-slots and transfer data at high speed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile