Confocal Imaging System Using High-Speed Sampling Circuit and Ultra-Wideband Slot Antenna
Authors:
- Akihiro ToyaATAkihiro Toya
- Nobuo SasakiNSNobuo Sasaki
- Shinichi KubotaSKShinichi Kubota
- Takamaro KikkawaTKTakamaro Kikkawa
- 1 April 2011
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 50 (4S) , 04DE02
Abstract
A low-power impulse-radio ultra-wideband (IR-UWB) confocal imaging system was developed using a low-power complementary metal oxide semiconductor (CMOS) equivalent time sampling circuit and UWB slot antennas. The proposed imaging system uses a Gaussian monocycle pulse with 3 GHz center frequency to detect a target. The sampling circuit is fabricated by 65 nm CMOS technology, and it can achieve a high sampling rate of 28.2 GS/s, input bandwidth of 3.3 GHz and PLL RMS jitter of 3.44 ps with a low power consumption of 50.7 mW. The UWB slot antenna having a 1.53–4.80 GHz input bandwidth is developed for the confocal imaging. An aluminum target was detected using a confocal imaging algorithm.Keywords
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