26 GHz Open Ended Air Gap Cavity RLSA Antenna for Next Generation Broadband Wireless Access

I. M.Ibrahim, T.A. Rahman, Z. Zakaria


The demand of large bandwidth has pushed the wireless backbone into the mm-wave frequency range. A compact wireless terminal has been suggested at 26 GHz over the decade. A small and high gain antenna has been introduced because of the scenic point of view and for the environment. Next generation Fixed Wireless Access has been proposed at 26 GHz frequency band as a backbone carrier. A Radial Line Slot Array Antenna at 26 GHz frequency band has been developed. The air gap cavity approach has made the fabrication simpler and light. The gain exceeds 23 dBi has been realized at a frequency of 26 GHz with overall dimensions of 200 mm x 200 mm x 3.6 mm. The reflection coefficient better than -10 dB has been successfully achieved at operating frequencies between 25.5 GHz to 26.5 GHz


Milimeter Wave RLSA; Next Generation FWA; Open-ended Air Gap Cavity RLSA; Wide Band RLSA Antenna

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X. Zhang, S. Kado, T. Hiruta, and Y. Miyane, "Development of a 26GHz band High Gain Flat Antenna for FWA Systems," Journal of Hitachi Cable Rev, no. 22, pp. 16-19, 2003.

B. Fong, A. C. M. Fong, G. Y. Hong, and H. Ryu, “Measurement of Attenuation and Phase on 26-GHz Wide-Band Point-to-Multipoint Signals Under the Influence of Rain,” Antenna and Wireless Propagation Letter, vol. 4, pp. 20-21, 2005.

Nguyen, T. X., S. J. Rushanthi, et al., “An equivalent two-layer model for a fast design of a high gain multi-layer Radial Line Slot Antenna using MoM”, in Proc. Microwave (APMC), 2012, Asia-Pacific.

Nguyen Xuan, T., R. Jayawardene, et al., “Characteristics of a high gain and light weight radial line slot antenna with honeycomb structure in 32GHz band for data link in space exploration”, Antennas and Propagation (ISAP), 2012 International Symposium on Antenna and Propagation, 2012, Nagoya.

T. Nguyen, R. S. Jayawardene, et al., “Study of a high gain radial line slot antenna in Ka-band for space uses. Electromagnetic Theory (EMTS)”, in Proc. URSI International Symposium on Electromagnetic Theory, 2013.

T. Nguyen, H. Ueda, et al., "A Radial Line Slot Antenna for an Elliptical Beam", IEEE Transactions on Antennas and Propagation vol. 60, no. 12, pp. 5531-5537, 2012.

M. Albani, A. Mazzinghi, et al., “Circular polarized RLSA optimization: A physics based approach,” in Proc. 7th European Conference on Antenna and Propagation, 2013.

Imran Mohd Ibrahim, Tharek Abdul Rahman, S. W. ak, Johari Ahmad, Ab Ghani Che Wahab, “A Study on Effectiveness of FR4 as a Dielectric Material for Radial Line Slot Array Antenna for Wireless Backhaul Application”, in Proc. 17th Asia-Pacific IEEE Cnference on Communications (APCC2011), Sutera Harbour Resort, Kota Kinabalu, Sabah, Malaysia, 2-5 October 2011.

M.I. Imran, A.R. Tharek, and A. Hasnain, “An Optimization of Beam Squinted Radial Line Slot Array Antenna Design at 5.8 GHz,” in Proc.RF and Microwave Conference (RFM2008), Kuala Lumpur, Malaysia, 2008.

M. Ando, K. Sakurai, and N. Goto, “Characteristics of a radial line slot antenna for 12 GHz band satellite TV reception”, IEEE Transactions on Antennas and Propagation, vol. 34, no. 10, Oct 1986, pp. 1269 – 1272.

T. Yamamoto, M. Takahashi, M. Ando, and N. Goto, "Measured performances of a wide band radial line slot antenna," Antennas and Propagation Society International Symposium, vol. 3, AP-S. Digest, 1994, pp. 2204-2207.

I. M. Ibrahim, T. A. Rahman, et al. "A Novel Wide Band Open Ended Air Gap Radial Line Slot Array Antenna at 5.8-GHz Frequency Band." Microwave and Optical Technology Letters, vol. 56, no. 4, pp. 938-944, 2014


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