Abstract
Single-fed Patch Antenna with Reconfigurable Orbit Angular Momentum Order
Highlights
Reconfigurable antennas achieve different functions through structural regulation, such as frequency reconfiguration, directional pattern reconfiguration and polarization reconfiguration, which have broad applications in wireless communication scenarios [1,2,3]
Reconfigurable antennas based on rotational states implement the orbital angular momentum (OAM) modes in two opposite direction at a fixed frequency
It can be seen that the TM21 mode is formed at 10.3 GHz, and the TM31 mode is shown at 14.0 GHz
Summary
Reconfigurable antennas achieve different functions through structural regulation, such as frequency reconfiguration, directional pattern reconfiguration and polarization reconfiguration, which have broad applications in wireless communication scenarios [1,2,3]. According to the characteristics of electromagnetic vortex, there are mainly two types of reconfigurable OAM antennas, namely order and direction reconfiguration. These two types can be used simultaneously [10,11,12]. It is easy to realize the direction reconfiguration by using symmetrical antennas, but generally only three states can be formed, that is, left\right-handed rotation and zero-order OAM modes [10]. From the structural point of view, the antenna array is the easiest to realize the OAM mode reconfiguration, including the direction and order, but a complex feed network is required [14], [15]. A circular patch with reconfigurable OAM order is constructed by controlling the length of a coupling arc segment to work at two frequencies
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