Title:
SIGNAL GENERATOR AND DISCRETIONARY WAVEFORM GENERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/234766
Kind Code:
A1
Abstract:
In the present invention, each of N D/A converters 120_1 to 120_N (where N≥2) converts input data at a sampling frequency FS from digital to analog. A digital signal processing unit 110 generates N sub-band waveform data Dsb1 to DsbN. Each of the sub-band waveform data Dsbi (1≤i≤N) includes, in a form shifted to a frequency band having a maximum frequency lower than FS/2, a sub-band SBi that is a corresponding one among divided pieces of digital waveform data Dwav representing an analog output signal, the digital waveform data Dwav being divided into N pieces in a frequency domain. A local signal generation circuit 140 generates N local signals LOC1 to LOCN that have different frequencies.
Inventors:
ASAMI KOJI (JP)
Application Number:
PCT/JP2022/017608
Publication Date:
November 10, 2022
Filing Date:
April 12, 2022
Export Citation:
Assignee:
ADVANTEST CORP (JP)
International Classes:
H04B1/04; H03M1/66
Foreign References:
| US20090052556A1 | 2009-02-26 | |||
| JP2018078403A | 2018-05-17 |
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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