Reconfigurable Reflectarray for 6G Transmitter: Stable Scanning Gain Enabled by Antenna Reciprocity and Low-Complexity Register Control

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Abstract
A novel reconfigurable reflectarray (RRA) with angularly stable scanning gain is proposed in this letter based on the principle of antenna reciprocity. This RRA element consists of a ME dipole antenna and a reflective phase shifter integrated with PIN diodes. Due to the angular stable gain of the ME dipole antenna, the RRA element demonstrates good angular stability. In addition, the RRA, adopting a 16×16 array configuration, achieves a beam scanning range of 70° with a 1dB loss within a 40° scanning range. To mitigate the control complexity of the system, a cascaded shifter control scheme is employed, which simplifies the design of the control circuitry. Experimental verification shows that both the wide-angle scanning capability and the scanning gain stability of the system are highly consistent with the simulation results.
Funding Information
  • National Natural Science Foundation of China (62201131, U19A200355, 62271122)
  • Development Program of Zhejiang Province (2022C01093)
  • Science and Technology Commissoner Project of Huzhou (2021KT13)

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