中圖分類號：TN86 文獻標志碼：A DOI: 10.16157/j.issn.0258-7998.244901
中文引用格式： 何凌云，梁宇宏. 寬帶多波束星載相控陣天線技術(shù)[J]. 電子技術(shù)應用,，2024,，50(6)：77-83.
英文引用格式： He Lingyun，Liang Yuhong. Wideband multi-beam technology for satellite-borne phased array antennas[J]. Application of Electronic Technique,，2024,，50(6)：77-83.

Wideband multi-beam technology for satellite-borne phased array antennas

Abstract： To meet the requirements of large instantaneous operating bandwidth and simultaneous multi-beams of the satellite-borne Ka-band phased array antenna, a wideband analog multi-beam phased array antenna based on intra-subarray phase shift and inter-subarray delay is designed. The designed 28×28 unit array is divided into four subarray structures, with phase shifters used for each unit within the subarrays and delay lines used between the subarrays. This combined control scheme of phase shifters and delay lines can achieve wide-band and wide-angle scanning of phased array antennas. The simulated results show that, at an instantaneous operating bandwidth of 800 MHz and a scanning angle of ± 54°, the pointing accuracy deviation of the proposed antenna is no more than 0.4°, and the gain deterioration is no more than 0.5 dB. At the same time, the Antenna-in-Package (AiP) architecture is used to achieve the lightness, thinness, and integration of antennas, which is suitable for the design of wideband multi-beam satellite-borne phased array antennas.

Key words : wideband,；multi-beam,；satellite-borne phased array