Browse > Article
http://dx.doi.org/10.5515/KJKIEES.2010.21.10.1184

EMC Measurements above 1 GHz Using an Offset Parabola Antenna System  

Chung, Yeon-Choon (Department of Electronics, Seokyeong University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.21, no.10, 2010 , pp. 1184-1193 More about this Journal
Abstract
The upper frequency of international EMC regulations is being expanded above 1 GHz. Radiated emissions above 1 GHz are different from those below 1 GHz that is existing upper regulation frequency, and which have lower field strength and sharper and tilted beam-width, relatively. In this paper, an effective evaluation method to be used above 1 GHz is studied using an offset parabola antenna system having a double-ridged horn antenna as a feed. First, simple model is proposed for calculating antenna factor and field uniformity of the parabola antenna system, and then real radiated emission and radiated susceptibility measurements are performed using a constant noise emitter and the suggested antenna system. The results show that the proposed antenna system has higher gain and power efficiency, and wider field uniformity relative to a conventional double-ridged horn antenna. Therefore, it is confirmed that the proposed system can be effectively used for EMC measurements above 1 GHz.
Keywords
EMC Measurements above 1 GHz; Offset Parabola Antenna; Radiated Emission; Radiated Immunity;
Citations & Related Records
연도 인용수 순위
  • Reference
1 P. S. Excell, M. Rousseau, "A broadband compact range for radiative EMC testing", IEE Colloquium on Calibration of Antennas for Close Range Measurements, Digest, no. 18, pp. 6/1/-4, 1990.
2 http://www.ets-lindgren.com/EMCantenna
3 Society of Automotive Engineers, Inc., "EMC antennas and antenna factors: How to use them", in Aerospace Information Report, AIR 1509, SAE, Inc., Warrendale, PA, Jan. 1978.
4 [1] A. W. Rudge, "Offset parabolic reflector antennas", Annales des Telecommunications, vol. 39, no. 1-2, pp. 3-33, Jan. 1984.
5 [1] M. J. Pagones, "Gain factor of an offset-fed paraboloidal reflector", IEEE Trans. Antennas Propagat., vol. AP-16, no. 5, pp. 536-541, Sep. 1968.   DOI
6 K. S. Kelleher, G. Hyde, "Reflector antennas", in Antenna Engineering Handbook, chapter 17, McGraw-Hill: New York, 1984.
7 Y. C. Chung, A. C. Marvin, and A. J. Rowell, "Antenna factor of compact antenna range for EMC measurements above 1 GHz", IEE Electronics Letters, vol. 37, no. 8, 475-476, Apr. 2001.   DOI
8 P. J. Wood, "Depolarization in reflector antennas", Marconi Review, vol. 42, no. 212, pp. 48-72, 1979.
9 CISPR 16-1 Edition 1.1, "Specification for radio disturbance and immunity measuring apparatus and methods, Part 1: Radio disturbance and immunity measuring apparatus", in CISPR Publications, Jan. 1998.
10 http://www.yorkemc.co.uk/instrumentation/
11 R. C. Johnson, "Some design parameters for point- source compact range", IEEE Trans. Antennas Propagat., vol. AP-34, pp. 845-847, Jun. 1986.   DOI
12 Mayuko Uno, "1 GHz를 경계로 달라지는 EMI 국제 규격 개정 잇달아", Nikkei Electronics, 2009년 10월.
13 FCC Part 15, "Radio frequency devices", 2006년 8월.
14 CISPR 22 Ed. 6.0, "Information technology equipment-radio disturbance characteristics-Limits and method of measurement", 2009년 9월.
15 CISPR 24 Ed. 1.0, "Information technology equipment-Immunity characteristics-Limits and method of measurement", 2002년 10월.
16 York EMC Services Ltd., "Practical limits for EMC emission testing at frequencies above 1 GHz", Final Report AY3601(Appendix 7) for The Radiocommunications Agency, Oct. 2000.