Polarization reconfigurable microstrip phased array |
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| Affiliation: | 1. Laboratory of Antennas and Propagation (LAP), Technological Institute of Aeronautics (ITA), São José dos Campos, SP, Brazil;2. Laboratory of Integration and Tests (LIT), National Institute for Space Research (INPE), São José dos Campos, SP, Brazil;1. Applied Electromagnetics Laboratory, School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran;2. School of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran;1. Department of Physics, Yashwantrao Chavan Institute of Science, Satara, Maharashtra, India;2. Department of Physics, B.V.M.B.S.K. Kanya Mahavidyalaya, Kadegaon, Sangli, Maharashtra, India;3. Department of Physics, K.R.P. Kanya Mahavidyalaya, Islampur, Dist-Sangli, Maharashtra, India;4. Department of Electronics, Shivaji University, Kolhapur, Maharashtra, India;1. Central Research Laboratory, Bharat Electronics Limited, Ghaziabad, Uttar Pradesh, India;2. Department of Electronics and Communication, GBPIET, Pauri, Uttarakhand, India;3. Department of Electronics and Communication, NIT, Hamirpur, Himachal Pradesh, India;1. Electrical Engineering Department, Urmia University, Urmia, Iran;2. Department of Electrical and Computer Engineering, Urmia Girls Faculty, West Azarbaijan Branch, Technical and Vocational University (TVU), Urmia, Iran |
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| Abstract: | In this paper, the design and the experimental validation of a polarization reconfigurable microstrip phased array is presented. The reconfigurability between the right-handed (RHCP) and left-handed (LHCP) circular polarization is achieved using electronic switches (PIN diodes) combined with truncated corners microstrip radiators. In the design, special attention was given to the matter of reducing back lobe radiation effects using the concept of asymmetric positioning of the radiators with respect to the ground plane. Afterward, the main lobe axial ratio behavior for several beam steering and side lobe level conditions are investigated. Finally, the polarization reconfigurability is achieved and the design is validated through the good agreement between theoretical and experimental results. |
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| Keywords: | Reconfigurable antennas Phased array Back lobe reduction Microstrip antenna Beamforming |
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