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:
Oct. 09, 2001
Filed:
Mar. 30, 1999
Mitsuru Tanaka, Saitama, JP;
NEC Corporation, Tokyo, JP;
Abstract
A voltage control variable attenuator takes a structure using a feedback loop which allows a signal modulated by a modulator to be attenuated based on a comparison result from a comparator. A power amplifier outputs the signal inputted thereto from the voltage control variable attenuator without amplifying the signal when no control signal is outputted from a control section, and amplifies a power of the signal inputted thereto from the voltage control variable attenuator to output it when the control signal is outputted from the control section. In a detection circuit, a change-over switch is provided which switches a detection voltage to be detected, depending on whether or not the control signal is outputted from the control section.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile