中圖分類號(hào)：TN82 文獻(xiàn)標(biāo)志碼：A DOI: 10.16157/j.issn.0258-7998.245028
中文引用格式： 王娟，楊雪霞,，顧怡敏,，等. 加載SIW腔的毫米波高相位一致性天線陣研究[J]. 電子技術(shù)應(yīng)用，2024,，50(8)：90-95.
英文引用格式： Wang Juan,，Yang Xuexia，Gu Yimin,，et al. High phase consistency for millimeter wave antenna array loaded with SIW cavity[J]. Application of Electronic Technique，2024,，50(8)：90-95.

High phase consistency for millimeter wave antenna array loaded with SIW cavity

Abstract： In the direction of arrival (DOA) estimation, the direction finding accuracy depends on the phase consistency between the array elements in the array, so a millimeter-wave four-element linear array with high phase consistency is designed. The antenna is printed on a single-layer substrate, and coaxial probes are used to differentially feed the top patch. Firstly, the coupled feeding method is used to reduce the coupling between the coaxial feeding ports, so as to reduce the phase fluctuation of each array element in the far field. Secondly, the substrate integrated waveguide (SIW) technique is used to reduce the interactions between the array elements and to improve the phase consistency of the array. The simulation results show that the |Sdd11|<-10 dB bandwidth of the linear array is 22.9~25.1 GHz, the maximum gain and isolation of each element in this working band are more than 6.5 dBi and 16.2 dB, respectively. The phase consistency of this array at 23 GHz and 24 GHz in the E-plane, H-plane and ±45°-plane are within ±10°. The antenna is processed and tested, and the experimental and simulation results are in good agreement.

Key words : phase consistency；differential antenna,；SIW cavity,；millimeter-wave antenna