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.

Date of Patent:
May. 29, 2001

Filed:

Mar. 16, 1999
Applicant:
Inventors:

Tatsuo Nitta, Tokyo, JP;

Katsumi Hirai, Tokyo, JP;

Assignee:

Kabushiki Kaisha Toshiba, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/112 ;
U.S. Cl.
CPC ...
H01Q 1/112 ;
Abstract

Two switches and a bypass line are provided to enable formation of a bypass route for transmitting a transmission signal bypassing a power amplifier. A configuration may be employed in which a first threshold value and a second threshold value that is a little bit lower than the first threshold value are set and the power amplifier is separated when the reception power exceeds the first threshold value and is connected when the reception power becomes lower than the second threshold value. That is, the power amplifier is connected and disconnected with hysteresis. This configuration can prevent the phenomenon that the power amplifier is connected and disconnected repeatedly and frequently in the above mentioned situation.


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