LIU Wei（刘伟）, WANG Ya-hai(王亚海), CHANG Qing-gong(常庆功)
(Science and Technology on Electronic Test & Measurement Laboratory， Qingdao 266555, China)
Abstract： This paper presents the scheme, function and technical specifications of 170-325 GHz waveband radar cross section（RCS） measurement system. Some steps are taken to improve the performance of the system, including multilevel amplification and frequency multiplication, low-order harmonic mixing, using external signal generators and intermediary frequency (IF) receiver. Considerable dynamic range and other characteristics are obtained with these approaches. Finally, the concrete implementation and experiment of 1 mm RCS measurement system are described, and feasibility of the system studied in this paper is verified.
Key words：THz; radar cross section（RCS）measurement; frequency multiplication; harmonic mixer
CLD number： TN958 Document code： A
Article ID： 1674-8042(2013)02-0119-04 doi： 10.3969/j.issn.1674-8042.2013.02.004
References
[1] WANG Ya-hai, HU Ying-hui. Application of hardware gating to radar cross section measurements. Journal of Electronic Measurement and Instrument, 2010, (S): 192-195.
[2] IEEE Standard Definitions of Terms, IEEE Std 1502TM-2007, IEEE recommended practice for radar cross-section teat procedures. The Institute of Electrical and Electronics Engineers Inc., New York, USA, 2007.
[3] Trebits R N. Radar cross section//Currie N C. Techniques of radar reflectivity measurement. Artech House, Dedham, MA, 1984.
[4] Knott E F. Outdoor RCS test ranges//Knott J F, Shaeffer E F, Tuley M. T. Radar cross section, 2nd Edition. SciTech Publishing Inc., Raleigh, NC, 2004.
[5] Fordham J A, Baggett M. RCS measurements in a compact range, Microwave Product News, 2005.
[6] Hartmann J, Fasold D. A flexible hardgating system as a diagnostic tool in single and double reflector compact ranges. In: Proceedings of 3rd Conference of the Association for Machine Translation in the America (AMTA '98), Langhorne, PA, USA, 1998: 331-336.
[7] Lemanczyk J. Hartmann J, Fasold D. Evaluation of hard gating in the ESA/ESTEC CPTR. In: Proceedings of 2004 Conference of the Association for Machine Translation in the America (AMTA '04), Stone Mountain Park, USA, 2004: 17-22.
[8] Hartmann J, Fasold D. RCS measurements with a high resolution hardgating system. In: Proceedings of 26th Annual Meeting & Symposium of the Antenna Measurement Techniques Association Atlanta, Georgia, USA, 2004: 28-33.
[9] McCarter G S. Practical considerations in selecting software or hardware gating for RCS measurement systems. In: Proceedings of IEE Colloquium on Antenna Measurements using the Compact Antenna Test Range, London, UN, 1991: 1001-1011.
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