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:
Nov. 22, 2011
Filed:
Nov. 28, 2008
Atsushi Honda, Kawasaki, JP;
Kaoru Yokoo, Kawasaki, JP;
Yasuyuki Oishi, Kawasaki, JP;
Yoji Ohashi, Kawasaki, JP;
Atsushi Honda, Kawasaki, JP;
Kaoru Yokoo, Kawasaki, JP;
Yasuyuki Oishi, Kawasaki, JP;
Yoji Ohashi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In a wireless communication apparatus in a time division duplex system, a transmission signal generation unit generates a transmission signal. A power amplifying device amplifies the generated transmission signal. A control signal generation device generates a drain voltage control signal for control of the drain voltage of the power amplifying device, and a gate voltage control signal for control of the gate voltage of the power amplifying device. The switch unit switches off the drain power supply of the power amplifying device during reception in the time division duplex system according to the drain voltage control signal. In addition, the power amplifying device sets a higher gate voltage during reception in the time division duplex system higher than during transmission according to the gate voltage control signal.