45°Linearly Polarized Substrate Integrated Waveguide-Fed Slot Array Antennas

摘要

A novel substrate integrated waveguide (SIW) based array antenna structure with slant radiation slots and through-hole cancellation vias is proposed for 45-degree linearly polarized millimeter wave applications.This antenna structure is able to better support a traveling wave and achieve wider bandwidth and better cross-polarization performance. As an example,a 10-element array centered at 24 GHz with a uniform power distribution is designed and presented with a impedance bandwidth of 7.5%,a maximum gain of 15.3 dBi,a cross polarization of 23.5 dB.This type of SIW-fed slot array antennas can be usedInother frequency bands for 45-degree linearly polarized microwave and millimeter-wave applications.