Simplified Transmitarray Unit Cell for 1-Bit Beam-Steering Operation
Journal
2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, IEEECONF 2020 - Proceedings
Pages
461-462
Date Issued
2020
Author(s)
Abstract
In this paper, a simplified design of transmitarray unit cell for 1-bit beam steering operation is proposed. It can provide 1-bit phase quantization by switching on/off the loading capacitors, which could be realized by using varactors and switching the dc bias voltages between a predetermined value and zero. The proposed unit cell is made of two identical, back-to-back rectangular patch antennas, coupled through a ground slot. Each patch is cut into halves by a transverse slit, at the middle of which the varactor is loaded. For preliminary verification, two test pieces of fixed-beam X-band transmitarray (0° and 20° from broadside, respectively) based on the proposed unit cell (loaded with and without capacitors) are fabricated and tested. The agreement between the simulated and measured results is satisfactory. ? 2020 IEEE.
Subjects
aperture-coupled patch antennas; Beam-steering; transmitarrays
Other Subjects
Cells; Microstrip antennas; Slot antennas; Varactors; Beam-steering; Dc bias voltage; Ground slots; Measured results; Phase quantization; Rectangular patch antenna; Transmit arrays; Transverse slits; Cytology
Type
conference paper