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. 26, 1999
Filed:
Dec. 17, 1996
Applicant:
Inventor:
Takashi Kato, Sagamihara, JP;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ; H04L / ; H01Q / ;
U.S. Cl.
CPC ...
375297 ; 375308 ; 375296 ; 455126 ;
Abstract
A radio apparatus is disclosed which includes a modulator that modulates an input signal having an input offset voltage held by an input sample and hold circuit and outputs an output signal having an output offset voltage. A demodulator of the radio apparatus demodulates the output signal and outputs a demodulated signal. The radio apparatus also has an offset compensating circuit which makes the output offset voltage coincide with a demodulated offset voltage of the demodulated signal by comparing the input offset voltage with the demodulated signal in order to output a feedback signal to the modulator.