Wideband Millimeter Wave Antenna with Cavity Backed Slotted Patch and Magneto-Electric Dipole  

作　　者：Yang CHENG Yuandan DONG 

机构地区：[1]School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China

出　　处：《Chinese Journal of Electronics》2024年第5期1234-1244,共11页电子学报（英文版）

摘　　要：This paper proposes a wideband cavity-backed slotted patch antenna,loaded with a magneto-electric(ME)-dipole and fed by a microstrip line,for millimeter wave(mm-Wave)applications.The coupled-feed cavitybacked slotted patch antenna is loaded with the ME-dipole.The slotted patch antenna serves as both a radiator and a ground for the ME-dipole.The combination of the ME-dipole antenna and the slotted patch antenna realizes a–10 dB impedance bandwidth covering over 22.86–44.35 GHz(63.9%).The pattern of the antenna element remains stable throughout this bandwidth.The proposed broadband antenna unit not only realizes single linearly polarized(LP)radiation but also can be designed for dual-LP radiation.The dual-polarized radiation can be achieved by changing the slot of the patch antenna to a crossed slot and altering the ME-dipole antenna to a dual-polarization form.A 2×2 dual-polarized array has been designed,fabricated,and tested.A novel dual-polarized feeding network is proposed.To achieve higher isolation,broadband in-phase feed and differential feed are adopted,respectively.A low-loss single to the differential structure is proposed for differential feeding.The simulated isolation of the array is higher than 40 dB.Measured results show that the dual-polarized 2×2 array has an overlapping bandwidth of 52.3%(|S_(11)|<–10 dB and|S_(21)|<–30 dB)with a peak gain of 14 dBi.The proposed antenna,featuring a wide overall bandwidth,low cost,and good radiation performance,is well suited for mm-Wave applications.

关 键 词：Array antenna Dual-polarized antenna Feeding network Magneto-electric dipole Millimeterwave(mm-Wave) PATCH 

分 类 号：TN822[电子电信—信息与通信工程]