Li Y.-LWu S.-WSHIH-YUAN CHEN2021-09-022021-09-022020https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101635874&doi=10.1109%2fIEEECONF35879.2020.9329672&partnerID=40&md5=210aed53b4727984449680ec35087698https://scholars.lib.ntu.edu.tw/handle/123456789/581147In 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.aperture-coupled patch antennas; Beam-steering; transmitarraysCells; Microstrip antennas; Slot antennas; Varactors; Beam-steering; Dc bias voltage; Ground slots; Measured results; Phase quantization; Rectangular patch antenna; Transmit arrays; Transverse slits; Cytologyconference paper10.1109/IEEECONF35879.2020.93296722-s2.0-85101635874