Title:
POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2015/052803
Kind Code:
A1
Abstract:
A signal level adjustment unit (6) which adjusts the signal level of an RF signal (1) that is an input signal such that the signal level of the RF signal (1) becomes constant, an input-side detector (7) which detects the RF signal the signal level of which has been adjusted by the signal level adjustment unit (6), a signal level adjustment unit (8) which adjusts the signal level of the RF signal attenuated by an attenuator (5) such that the signal level of the RF signal becomes constant, and a feedback-side detector (9) which detects the RF signal the signal level of which has been adjusted by the signal level adjustment unit (8) are provided, and an amplitude comparator (10) detects a difference between the envelope of the RF signal detected by the input-side detector (7) and the envelope of the RF signal detected by the feedback-side detector (9), and outputs a gain control signal for making the difference zero to a main signal variable gain unit (2).
Inventors:
FUJIWARA TAKANOBU (JP)
TANIGUCHI EIJI (JP)
HIEDA MORISHIGE (JP)
TANIGUCHI EIJI (JP)
HIEDA MORISHIGE (JP)
Application Number:
PCT/JP2013/077505
Publication Date:
April 16, 2015
Filing Date:
October 09, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H03G3/30
Foreign References:
| JPH0998038A | 1997-04-08 | |||
| JPH09307384A | 1997-11-28 | |||
| JPH04200005A | 1992-07-21 | |||
| JPH09172380A | 1997-06-30 | |||
| JP2007300272A | 2007-11-15 |
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
Hideaki Tazawa (JP)
Hideaki Tazawa (JP)
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