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. 08, 2002
Filed:
Dec. 13, 1999
Toshio Obara, Kanagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A transmission power control in a wireless communication, in that based upon transmission power designation information “A” functioning as a power control target derived from a transmission power designating unit 16, a transmission power error “E” is detected from a difference between a detection value “D” of an outputted transmission signal and a power control target value “C”. This transmission power error “E” is multiplied by a loop gain “G” of a feedback loop set by a loop gain setting unit 22 so as to produce a feedback correction value “F”. The transmission power control is carried out based on the feedback correction value “F”. Furthermore, a suitable bias voltage “J” is outputted from a bias voltage producing unit 17 in response to the transmission power designation information “A” so as to reduce power consumption, and also, a gain variation of a power amplifier 13, which is caused by this bias current control, is compensated by a gain variation compensating unit 26 in response to the transmission power designation information “A”.