Title:
TRANSMITTING CIRCUIT AND COMMUNICATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2011/001575
Kind Code:
A1
Abstract:
Disclosed is a transmitting circuit wherein operation mode can be smoothly switched at the time of switching the operation mode of the transmitting circuit. A power amplifying unit (14) is provided with: a first input terminal supplied with a direct current voltage or a voltage corresponding to amplitude signals (M); a second input terminal to which signals outputted from the first variable gain amplifier (171) or signals outputted from a second variable gain amplifier (172) are inputted; and a third input terminal to which signals outputted from a first bias circuit (15) or signals outputted from a second bias circuit (16) are inputted. A control unit (11) switches the operation mode of the transmitting circuit such that at least the first input terminal, the second input terminal or the third input terminal of the power amplifying unit is not in the state wherein the signals are not inputted.
Inventors:
KITAMURA RYO
MIYAZAKI TAKAHITO
MIYAZAKI TAKAHITO
Application Number:
PCT/JP2010/002408
Publication Date:
January 06, 2011
Filing Date:
April 01, 2010
Export Citation:
Assignee:
PANASONIC CORP (JP)
KITAMURA RYO
MIYAZAKI TAKAHITO
KITAMURA RYO
MIYAZAKI TAKAHITO
International Classes:
H03F1/06; H03F1/02; H03F3/189; H03F3/24; H04B1/04
Foreign References:
| JP2004289812A | 2004-10-14 | |||
| JP2005269181A | 2005-09-29 | |||
| JP2003324323A | 2003-11-14 | |||
| JP2008172544A | 2008-07-24 | |||
| JP2008539601A | 2008-11-13 |
Attorney, Agent or Firm:
OGASAWARA, Shiro (JP)
Shiro Ogasawara (JP)
Shiro Ogasawara (JP)
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