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Development of a UHF Transponder for Geological Monitoring of Boreholes Drilled through Ice Sheets using phase-sensitive FMCW Radar

Amiri, A; Brennan, PV; Lok, LB; (2017) Development of a UHF Transponder for Geological Monitoring of Boreholes Drilled through Ice Sheets using phase-sensitive FMCW Radar. In: 2017 IEEE MTT-S International Microwave Symposium (IMS). (pp. pp. 1746-1749). IEEE Green open access

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Abstract

This paper presents an active UHF transponder designed for geological monitoring of boreholes drilled through ice sheets. It forms part of a phase-sensitive frequency modulated continuous wave (FMCW) radar system to measure the horizontal position of a borehole with depth. To distinguish the transponder response from stationary clutter, the transponder modulates the received signal before re-transmission to the surface radars. The transponder operates from 292 to 492 MHz with a gain around 18 dB. The transponder employs two novel antennas optimized for deployment within a 15 cm diameter borehole. The simulation and indoor laboratory measurement results of the transponder design are presented.

Type: Proceedings paper
Title: Development of a UHF Transponder for Geological Monitoring of Boreholes Drilled through Ice Sheets using phase-sensitive FMCW Radar
Event: IEEE-Microwave-Theory-and-Techniques-Society International Microwave Symposium (IMS) / Session on Women in Microwaves (WIM)
Location: Honolulu, HI
Dates: 04 June 2017 - 09 June 2017
ISBN-13: 978-1-5090-6360-4
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/MWSYM.2017.8058982
Publisher version: https://doi.org/10.1109/MWSYM.2017.8058982
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Technology, Engineering, Electrical & Electronic, Telecommunications, Engineering, frequency modulated continuous wave (FMCW) radar, transponder, folded crossed plate monopole, ultrawide-band (UWB) antenna
URI: http://discovery.ucl.ac.uk/id/eprint/10050527
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