Design of Millimeter Wave Dual-polarized Wideband Wide-angle Scanning Antenna-in-packaged

keywords:millimeter wave  dual-polarization  wideband wide-angle scanning  antenna-in-packaged

Abstract:The high integration of the antenna-in-packaged( AiP) poses a significant challenge in achieving dual-polarized structure design and wideband wide-angle performance in the integrated environment. Therefore, this paper utilizes low temperature co-fired ceramic(LTCC) technology to implement an orthogonal magnetoelectric ( ME) dipole antenna and introduces a bridge method for designing orthogonal arms. This approach enhances the integration level of the antenna element, improves coupling efficiency of the dipole antenna, and resolves issues related to high integration arrangement of dual-polarized AiP. Additionally, a new butterfly type parasitic patch is designed to further enhance antenna bandwidth. Ultimately, optimization and processing of the millimeter-wave Ka band wideband wide-angle dual-polarized AiP are achieved. The performance of the machined 9×9 dual-polarized array (36. 50×36. 50×1. 25 mm3) is tested against the scanning pattern of an active stationary array. The impedance bandwidth of the array reaches 24. 1% (31. 4 GHz~40. 0 GHz), while the 3 dB beamwidth exceeds ±70°, demonstrating excellent wideband wide-angle characteristics suitable for thin wideband wide-angle scanning millimeter-wave phased array systems in an integrated package environment.