Design and performance analysis of UWB modules for borehole radar system

Title
Design and performance analysis of UWB modules for borehole radar system
Authors
조재형김상욱김세윤육종관
Keywords
radar; borehole; UWB; Pulse Generator; LNA; 레이더; 시추공; 광대역
Issue Date
2009-12
Publisher
한국전자파학회논문지; The Journal of Korea Electromagnetic Engineering Society
Citation
VOL 20, NO 11, 1121-1129
Abstract
In this paper, the UWB(Ultra-Wide Band) modules such as a pulse generator and the LNA(Low-Noise Amplifier) with AGC(Auto Gain Control) are designed to construct a cross-borehole pulse radar system, of which performance is compared with the existing system. The budget and specification of the radar system are determined by calculating the total path loss of the underground medium including an empty cavity. The pulse generator is fabricated to have the repeatation frequency 40 kHz, the pulse width lower than 5 ns and the peak signal level +73 dBm. The UWB LNA is designed to have the noise figure 3.77 dB, the variable gain range 100 dB and the frequency range of 20 MHz to 200 MHz. Compared with the existing system in an actual test site, the implemented system renders it possible to detect the blind area due to the UWB LNA with low noise figure.
URI
http://pubs.kist.re.kr/handle/201004/37151
ISSN
1226-3133
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KIST Publication > Article
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