Title:
送信装置及び無線通信装置
Document Type and Number:
Japanese Patent JP4642068
Kind Code:
B2
Abstract:
In a first mode in which the power level of a transmission output signal (S6) is to be high, an output from the multiplier (2) is input to an amplitude modulation signal amplifier (4), and a radio frequency power amplifier (5) performs amplitude modulation on a radio frequency phase modulated signal (S4) using a nonlinear area with a supply voltage from the amplitude modulation signal amplifier (4). In a second mode in which the power level of a transmission output signal (S6) is to be low, the output from the multiplier (2) is input to a variable gain amplifier (7), and the variable gain amplifier (7) performs amplitude modulation on the radio frequency phase modulated signal (S4). The amplitude modulated signal is output without passing through the radio frequency power amplifier (5).
Inventors:
Yoshihiro Hara
Toru Matsuura
Toru Matsuura
Application Number:
JP2007501620A
Publication Date:
March 02, 2011
Filing Date:
February 02, 2006
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H04B1/04; H03F1/02; H03F3/20
Domestic Patent References:
| JP2005020696A | 2005-01-20 | |||
| JP2005020693A | 2005-01-20 | |||
| JP2004289812A | 2004-10-14 | |||
| JP2004104194A | 2004-04-02 |
Attorney, Agent or Firm:
Shiro Ogasawara