Title:
POWER SUPPLY CIRCUIT AND POWER SUPPLY CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2012/074133
Kind Code:
A1
Abstract:
In a power supply circuit of the present invention which uses a switching amplifier in combination with a linear amplifier, in order to be capable of correcting errors of operation of the switching amplifier and the linear amplifier, that is to say, in order to cause the switching amplifier and the linear amplifier to operate in coordination in a near-ideal state, the power supply circuit is provided with first amplification means which delays an input signal by only a predetermined set time and amplifies thereof, current detection means for detecting a current value of the output signal of the first amplification means, predicted signal generation means for generating a pulse signal on the basis of the output signal of the current detection means and the input signal, second amplification means for amplifying the pulse signal, and signal output means for synthesizing the current of the output signal of the first amplification means and the output signal of the second amplification means to output thereof, wherein the set time is time for reducing the effect of the delay times generated at the current detection means, the predicted signal generation means, and the second amplification means.
Inventors:
TAKAHASHI KIYOHIKO (JP)
Application Number:
PCT/JP2011/078226
Publication Date:
June 07, 2012
Filing Date:
November 30, 2011
Export Citation:
Assignee:
NEC CORP (JP)
TAKAHASHI KIYOHIKO (JP)
TAKAHASHI KIYOHIKO (JP)
International Classes:
H03F1/06; H03F3/217; H03F3/24
Foreign References:
| US5905407A | 1999-05-18 | |||
| JP2010258896A | 2010-11-11 | |||
| JP2007215158A | 2007-08-23 | |||
| JP2003533116A | 2003-11-05 |
Attorney, Agent or Firm:
SHIMOSAKA, NAOKI (JP)
Naoki Shimosaka (JP)
Naoki Shimosaka (JP)
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Claims: