Invention Application
US20120300824A1 PEAK POWER SUPPRESSING CIRCUIT AND COMMUNICATION DEVICE HAVING THE SAME
有权
峰值电源抑制电路和具有相同功能的通信设备
- Patent Title: PEAK POWER SUPPRESSING CIRCUIT AND COMMUNICATION DEVICE HAVING THE SAME
- Patent Title (中): 峰值电源抑制电路和具有相同功能的通信设备
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Application No.: US13575009Application Date: 2010-11-15
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Publication No.: US20120300824A1Publication Date: 2012-11-29
- Inventor: Takashi Maehata , Mikhail Illarionov
- Applicant: Takashi Maehata , Mikhail Illarionov
- Priority: JP2010-039079 20100224
- International Application: PCT/JP2010/070284 WO 20101115
- Main IPC: H04B1/04
- IPC: H04B1/04 ; H04B17/00
Abstract:
An object of the present invention is to provide a peak power suppressing circuit 9 that can suppress a peak power of an IQ baseband signal more assuredly.The present invention relates to the peak power suppressing circuit 9 that performs a clipping process on an IQ baseband signal. The suppressing circuit 9 includes a power calculation section 13 that calculates an instantaneous power P of an IQ baseband signal, a pulse retention section 22 that retains a cancellation pulse S that has a frequency component in a frequency band B of the IQ baseband signal and a frequency component outside the frequency band, and a clipping processing section 17 that subtracts, from an IQ baseband signal whose instantaneous power P that has been calculated is greater than a predetermined threshold Pth, cancellation signals Ic and Qc obtained by multiplying increments ΔI and ΔQ of the IQ baseband signal from the threshold Pth by the cancellation pulse S.
Public/Granted literature
- US08744002B2 Peak power suppressing circuit and communication device having the same Public/Granted day:2014-06-03
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