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Liang, “Frequency-reconfigurable bow-tie antenna for bluetooth, WiMAX, and WLAN applications,” IEEE Antennas and Wireless Propag. Leviatan, “Reconfigurable slot antenna for switchable multiband operation in a wide frequency range,” IEEE Antennas and Wireless Propag. Gong, “A switchable-frequency slot-ring antenna element for designing a reconfigurable array,” IEEE Antennas and Wireless Propag. Yan Zhang, 1 School of Electronic and Information Engineering Beihang University, Beijing, 100191, China In addition, these three types of reconfiguration can be controlled independently. The radiation pattern can be switched among five cases in yoz-plane and xoz-plane, with the switchable polarization between left- and right-hand circular polarization. The proposed antenna operates at a frequency tuning range from 1.96 to 2.03 GHz. By controlling the bias voltage across the varactors, various narrow frequency bands can be achieved. Reconfiguration of the polarization and pattern is realized by using PIN diodes as switching components. Two feed points of the radiating patch are connected to a Wilkinson power divider loaded with the phase reconfigurable transmission lines on the bottom layer. The antenna consists of an octagonal patch, a narrow octagonal ring and four diamond-shaped parasitic patches on the top layer. In this paper, a circularly polarized frequency, pattern, and polarization switching antenna is proposed. State Key Laboratory of Space-Ground Integrated Information Technology Beijing Institute of Satellite Information Engineering, Beijing, 100095, Chinaīeam switching, frequency reconfigurable, patch antenna, switchable polarization Abstract
School of Electronic and Information Engineering Beihang University, Beijing, 100191, China 1 School of Electronic and Information Engineering Beihang University, Beijing, 100191, China