Design Of High Performance Wide Band Rotman Lens In X-Band

International Journal of P2P Network Trends and Technology (IJPTT)          
© 2015 by IJPTT Journal
Volume - 5 Issue - 2
Year of Publication : 2015
Authors : AlirezaBayat, ShayanKajbafVala, Ashkan Soleimani
DOI :  10.14445/22492615/IJPTT-V17P406


AlirezaBayat, ShayanKajbafVala, Ashkan Soleimani "Design Of High Performance Wide Band Rotman Lens In X-Band". International Journal of P2P Network Trends and Technology (IJPTT), V5(2):28-32 Mar - Apr 2015, ISSN:2249-2615,, Published by Seventh Sense Research Group.


In this paper a Rotman lens consisting of 13 beamports and 10 array ports offers a phase shift from -50 degree to +50 degree with 7.5 degree step in X band is presented. The structure of lens has been simulated using MATLAB and optimized with help of Genetic Algorithm then results have been imported to CST Microwave Studio and simulated. For reducing phase error, path-lengths have been optimized using Advanced Design System (ADS). By this way the magnitude error of different frequency is limited within 3 dB.


[1] O. Kilic and S. Weiss, "Dielectric Rotman Lens Design For Multi- Function RF Antenna Application, "IEEE APS Symp., June 2004.
[2] J. Ruze, Wide angle metal plate optics, proc IRE 38 (1950), 53-59.
[3] W. Rotman and R.F. Tuner, Wide-angle microwave lens for line source application, IEEE trans antenna Propag AP-11 (1963), 623-632.
[4] Musa, L. ;Smith, MS., Microstrip port design and sidewall absorption for printed Rotman lenses, Microwave, Antennas and Propagation, IEEE Proceedings H, Vol.136, No.1, Feb 1989, pp.53-58.
[5] Carlegrim, Borje, Pettersson, Lars, Rotman lens in microstrip technology, Microwave Conference, 1992. 22nd European, 5-9 Sept. 1992, pp. 882- 887.
[6] Kim, J., Cho, C.S., Barnes, F.S., Dielectric Slab Rotman Lens for Microwave/Millimeter Wave Applications, IEEETransactions on Microwave Theory and Techniques, Vol.53, No.8 Aug. 2005, pp.2622- 2627.
[7] Schulwitz, L., Mortazawi, A., A New Low Loss Rotman Lens Design Using a Graded Dielectric Substrate, IEEE Transactions on Microwave Theory and Techniques, Vo. 56, No. 12, Dec. 2008, pp. 2734-2741.
[8] Yu Jian Cheng, Wei Hong, KeWu, Zhen Qi Kuai, etc., Substrate Integrated Waveguide (SIW) Rotman Lens and Its Ka-Band Multibeam Array Antenna Applications, IEEE Transactions on Antennas and Propagation, Vol. 56, No. 8, Aug. 2008, pp. 2504-2513.
[9] Archer D. H, Maybell M. J, Rotman lens Development history at Raytheon Electric Warfare Systems 1967-1995, Antennas and Propagation Society International Symposium.
[10] J. Dong, H.-C. Ou, A. I. Zaghloul, "Measurement Investigation of MicrostripLens Sidewall`s Termination," in USNC/URSI National Radio ScienceMeeting South Carolina, 2009.
[11] Woosung Lee, Jaeheung Kim, Young Joong Yoon, Compact Two-Layer Rotman Lens-Fed Microstrip Antenna Array at 24 GHz, IEEE Transactions on Antennas and Propagation, Vol. 59, No. 2, February 2011, pp. 460-466.
[12] Dong J ,Zaghloul A I, Rotman R ,Phase-error performanceof multi-focal and non-focal two-dimensional Rotman lens designs, Microwaves, Antennas & Propagation IET, Vol.4,pp. 2097-2103 ,2010

rotman lens; beamforming network; x-band; wide scanning.