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:
Sep. 07, 2004
Filed:
Jan. 29, 2003
Hiroshi Suzuki, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
In a transmission power control circuit according to the present invention, a variable gain amplifier ( ) amplifies a transmitting wave with a gain corresponding to a control voltage V from a power control section ( ). When a transmission power (P ) of the transmitting wave is within a measurable range of a detecting circuit ( ), the power control section ( ) sets a control voltage feedback ratio (K′) to 0 and applies negative feedback to a detection voltage (V ) and thereby, implements close loop control to cause transmission power P to be closer to a designated level. On the other hand, when the transmission power (P ) is out of a measurable range of the detecting circuit ( ), the power control section ( ) sets a detection voltage feedback ratio (K) to 0 to generate the control voltage (V ) according to open loop control based on a reference voltage V .
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile