Pre-phased Planar Array with 1-bit Amplitude Control for Single-beam Scanning

• Published in: 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI) pp. 255 - 256
• Main Authors: Yin, Jiexi, Chen, Zhi Ning
• Format: Conference Proceeding
• Language: English
• Published: IEEE 04.12.2021
• Subjects: Gain; Meetings; Planar arrays
• DOI: 10.1109/APS/URSI47566.2021.9704383

The pre-phased planar array with 1-bit amplitude control is proposed for the single-beam scanning. The pre-phase distribution on the planar array is designed based on the theory of array synthesis, and the normalized amplitude 0 and 1 are utilized for State 0 and State 1, respectively. Using the fixed pre-phase and 1-bit amplitude control for the unit cells, anticipated beam directions can be achieved. Furthermore, the 1-bit amplitude control can achieve a tailored amplitude in the scanning planar, bringing suppressed side lobe level (SLL). As an example, a pre-phased planar array with 20\times 20 unit-cells is designed and numerically simulated for the beam scanning from 0 to 30 degrees with the 10-degree step. Two difference cases are discussed for maximized gains and suppressed SLLs, respectively. The number of State 1 for unit cells is maximized for the maximized gain, and the tailored amplitude is utilized for the suppressed SLL nearly 20 dB during beam scanning.