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— Efficient detection of people hidden by walls or rubble is of interest for rescue, surveillance and security operations. A useful method applies an ultra-wideband radar approach for this purpose since electromagnetic waves in the lower GHz-range penetrate most non-metallic materials. The paper gives a short overview of the particular radar conception and… (More)
Transmitter and receiver circuits operating at 11 GHz system clock rate are described. These circuits, fabricated in a 0.8 µm SiGe-HBT technology, are the key elements of a radar head using a new ultra wideband principle.