Design of a passive dispersive filter for analog pulse compression radar
Résumé
The paper presents the design of a dispersive filter for an analog pulse compression radar. The architecture of the analog pulse compression radar is presented with its equations, limitations, trade-off and architecture comparison with the more traditional FMCW radar. In the past decades, the matched filter of analog pulse compression radar has been implemented with SAW filters, having a reduced bandwidth and then poor resolution. Here the matched filter is designed with a passive dispersive filter instead of a SAW. The design of the filter is described, measured, and compared to the state-of-the-art of dispersive filter. The use of wideband passive analog matched filter paves the way to better signal-to-noise ratio and reduced power consumption compared to its traditional FMCW counterpart. The measured filter, composed of 2 passive cells achieved with components of the shelves has a group delay downslope of -1 ns/GHz which is one of the strongest downslope reported in the literature. The considered bandwidth is [700MHz – 1.9GHz].
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Meliani et al. - 2023 - Design of a passive dispersive filter for analog pulse compression radar.pdf (410.83 Ko)
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