Affiliation:
1. Department of Engineering and Technology , University of Kalyani , Kalyani , West Bengal , India
Abstract
Abstract
A square dielectric resonator antenna (SDRA) offering high polarization purity as a feed for parabolic reflector antenna is presented in this paper. Three sequences of holes are strategically integrated into the SDRA to enhance the polarization purity of the desired mode by suppressing the cross-polarization (X-pol) generating higher order mode. A detailed study on the performance of the parabolic reflector antenna with the proposed SDRA feed is also performed. The composite structure provides low X-pol levels of −33 dB at the half-power beamwidth (HPBW) points and −35 dB at the 1 dB co-polarization region in the H-plane. The composite structure radiates in the broadside direction with a high gain of 26 dBi and radiation efficiency of 95%. The proposed SDRA is designed to operate at 3 GHz of the S-band. A prototype of the proposed design is fabricated and experimentally verified. A measured X-pol isolation of 39 dB at ±15% of HPBW (European Telecommunication Standards Institute [ETSI] standard for satellite communication) and 50 dB at boresight is obtained in the H-plane. The small size, light weight, stable radiation performance and high polarization purity offered by the proposed SDRA make it a suitable candidate for satellite communication application.
Subject
Electrical and Electronic Engineering
Reference16 articles.
1. B. G. Evans, P. T. Thompson, G. E. Corazza, A. Vanelli-Coralli, and E. A. Candreva, “1945–2010: 65 years of satellite history from early visions to latest missions,” Proc. IEEE, vol. 99, no. 11, pp. 1840–1857, 2011, https://doi.org/10.1109/JPROC.2011.2159467.
2. S. M. Ali, M. A. Zakariya, Z. Baharudin, et al.., “Recent advances in microwave reflector antenna technology,” in 2012 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE), Melaka, 2012, pp. 287–292, https://doi.org/10.1109/APACE.2012.6457678.
3. Fixed Radio Systems, Characteristics and Requirements for Point-to-Point Equipment and Antennas; Part 4: Antennas, 650 Route des Lucioles, F-06921 Sophia Antipolis Cedex, France, European Telecommunications Standards Institute (ETSI), 2017 [Online]. Available at: https://www.etsi.org/deliver/etsi_en/302200_302299/30221704/02.01.01_60/en_30221704v020101p.pdf [accessed: Dec. 20, 2019].
4. K. Debbarma and R. Bhattacharjee, “Microstrip patch antenna feed for offset reflector antenna for dual band application,” Int. J. RF Microw. Computer-Aided Eng., vol. 29, no. 12, pp. e21999–e22002, 2019. https://doi.org/10.1002/mmce.21999.
5. J. M. Rathod and Y. P. Kosta, “Low cost design & development of conical horn feed for parabolic reflector antenna,” in 2008 International Conference on Recent Advances in Microwave Theory and Applications, Jaipur, 2008, pp. 775–777, https://doi.org/10.1109/AMTA.2008.4763081.