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:
Jul. 20, 2004
Filed:
Nov. 19, 1999
Mikio Hayashihara, Sagamihara, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A low-noise amplifier having low-distortion characteristics (low distortion LNA), a low-noise amplifier of a low current consumption type(low current consumption LNA), and radio-frequency switches and for selectively switching either of them are provided in a receiving radio-frequency unit . On the basis of a mode changing control function of a CPU , an LNA switch control signal AS is generated so that the low-distortion LNA is selected during a period in which the operation of a radio transmitter-receiver is in a transmitting/receiving state, and that the low current consumption LNA is selected in a period of a standby state, and thus the switching of the radio-frequency switches and of a low-noise amplifier circuit section is controlled.