Implementation of a multi-waveband, high-precision, wideband waveform generator based on DDWS for antenna channel characteristics test
In: 2016 Progress in Electromagnetic Research Symposium (PIERS), 2016-08-01
Online
unknown
Zugriff:
In practical radar systems, amplitude and phase distortion exists in antenna channels, which has a bad effect on subsequent signal processing. So, waveform generator is needed to launch signals covering radar waveband to make a channel test. Ensuring accuracy and bandwidth of the waveform generator is a fundamental requirement. Accordingly, this paper proposed a full flow of wideband waveform generation, including hardware design, parameter selection and pre-distortion correction. Direct digital waveform synthesize (DDWS) is done in the first, second, or third Nyquist region without analog frequency conversion, ensuring the quality of the waveform. And pre-distortion measures are taken to correct the waveform reconstruction error. The waveform generator designed in this paper has been successfully applied in a digital array radar (DAR) system, which can generate 500MHz bandwidth LFM signal, covering multiple waveband including 0.65 GHz–1.15 GHz, 1.25 GHz–1.75 GHz, 1.85 GHz–2.35 GHz, 2.45 GHz–2.95 GHz.
Titel: |
Implementation of a multi-waveband, high-precision, wideband waveform generator based on DDWS for antenna channel characteristics test
|
---|---|
Autor/in / Beteiligte Person: | Yang, Jiong ; Zhao, Yingxiao ; Chen, Zengping ; Zhang, Yue ; Lin, Qianqiang |
Link: | |
Zeitschrift: | 2016 Progress in Electromagnetic Research Symposium (PIERS), 2016-08-01 |
Veröffentlichung: | IEEE, 2016 |
Medientyp: | unknown |
DOI: | 10.1109/piers.2016.7734361 |
Schlagwort: |
|
Sonstiges: |
|