bow-tie antennas, electronic support measures, polarization diversity antenna array, spiral antennas


Polarization diversity antenna arrays are applied to electronic support measures (ESM) systems since the 1980s. However, even today modern systems are conceived with the employment of the traditional and inconvenient spiral antennas and there are no studies that evidences most of the benefits of this technique applied to them. This paper aims at showing not only the advantages on polarization matching issues, but also the benefits in gain, in simpler truncation effect problems and in costs and time spent on design and production. After a brief approach strictly applied to ESM of the main features of spiral antennas and bow-tie antennas compounding a polarization diversity array, equations of the power available from the last were developed from the concept of effective length. The results demonstrate that the array could provide a power 8.7 dB higher than a modern spiral would to an ESM system when it receives vertical or horizontal linearly polarized waves, which multiplies by 2.7 the range of the system, besides also presenting a better performance in case of circularly polarized incident waves. This work has contributed to propose a replacement to the very common use of spiral antennas on the upcoming ESM system projects. This study is recommended for the areas of Electronic Warfare, Electromagnetic Devices and Applications and Ultra-Wideband Antennas.


[1] N. T. Duc, S. Shin. “A proposal antenna polarization diversity for LTE 2x2 MIMO in indoor testbed” in Proc. Seventh
Int. Conf. on Ubiquitous and Future Networks, 2015, pp. 35-36.
[2] E. -S. Yang, H. -W. Son. “Dual-polarised metal-mountable UHF RFID tag antenna for polarisation diversity”.
Electronic Letters, vol. 52, issue 7, pp. 496-498, Apr. 2016.
[3] J. Zhu, S. Li, B. Feng, L. Deng, S. Yin. “Compact dual-polarized UWB quasi-self-complementary MIMO/diversity
antenna with band-rejection capability”. IEEE Antennas and Wireless Propagation Letters, vol. 15, pp. 905-908, Sep.
[4] P. M. Ndao, Y. M. Erhel, D. Lemur, M. Oger, J. Le Masson. “First experiments of a HF MIMO system with
polarization diversity” in Proc. Int. Conf. on Ionospheric Radio Systems and Techniques, 2012, pp. 1-5.
[5] K. Suzuki, K. Tanizawa, S. -H. Kim, S. Suda, G. Cong, K. Ikeda, S. Namiki, H. Kawashima. “Polarization-rotator-free
polarization-diversity 4x4 Si-wire optical switch”. IEEE Photonics Journel, vol. 8, issue 2, Feb. 2016.
[6] M. S. Khan, A. -D. Capobianco, A. Naqvi, B. Ijaz, S. Asif, B. D. Braaten. “Planar, compact ultra-wideband polarisation
diversity antenna array”. IET Microwaves, Antennas & Propagation, vol. 9, issue 15, pp. 1761-1768, Dec. 2015.
[7] R. G. Wiley. ELINT: The Interception and Analysis of Radar Signals. Boston: Artech House Inc., 2006.
[8] A. A. Heidari, M. Simrooni, M. Nakhkash. “Analysis and Design of an X-Band Microstrip Patch Array Antenna for
ESM Application”, in Proc. Int. Conf. on Electromagnetics in Advanced Applications, 2007, pp. 559-562.
[9] V. Alleva, D. Baccello, M. Bartocci, B. Orobello. “Digital Antenna Unit for DA Analyis in ESM Systems” in Proc. 7th
European Radar Conference, 2010, pp. 479-482.
[10] Computer Simulation Technology. “Studio Suite”. Internet: www.cst.com, 2016 [Apr. 10, 2016].
[11] V. H. Rumsey. Frequency independent antennas. New York: Academic Press Inc., 1966.
[12] H. Nakano, K. Kikkawa, N. Kondo, Y. Iitsuka, J. Yamauchi. “Low-profile equiangular spiral antenna backed by an
EBG reflector”. IEEE Transactions on Antennas and Propagation, vol. 57, issue 5, pp. 1309-1318, May 2009.
[13] C. A. Balanis. Antenna Theory: Analysis and Design. 3rd edition. Hoboken: John Wiley & Sons, Inc., 2005.
[14] H. Kogure, Y. Kogure e J. C. Rautio. Introduction to antenna analysis using EM simulators. Boston: Artech House Inc,
[15] J. -Y. Zhao, Z. -Y. Zhang, N. -W. Liu, G. Fu, S. -X. Gong. “Wideband Unidirectional Bowtie Antenna with Pattern
Improvement”. Progress In Electromagnetics Research Letters, vol. 44, pp. 119-124, Jan. 2014.
[16] J. L. Volakis e K. Fujimoto. Small antennas: miniaturization techniques & applications. New York: McGraw-Hill,
[17] S. Sitaraman, Y. Suzuki, C. White, V. Nair, T. Kamgaing, F. Juskey, S. Kim, P. Raj, V. Sundaram e R. Tummala.
“Modeling, Design and Demonstration of Multi-Die Embedded WLAN RF Front-End Module with Ultra-miniaturized
and High-performance Passives” in Proc. IEEE 64th Electronic Components and Technology Conference, 2014, pp.
[18] The Mathworks Inc. “Matlab R2010a”. Internet: www.mathworks.com/products/matlab, 2016 [Apr. 10, 2016].




How to Cite

POLARIZATION DIVERSITY ON ESM SYSTEMS. (2017). Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe), 16(1), 273–283. https://doi.org/10.1590/2179-10742017v16i1888



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