A HMSIW Dual-band Dual-polarization Cavity-backed Antenna

In this paper, a dual-band dual-polarization half -mode substrate integrated waveguide (HMSIW) cavity-backed antenna is presented. Loading folded slotline on the top surface of the antenna, dual-band characteristic can be achieved. Two radiation elements are orthogonal, so dual-polarization can be obtained in two operating bands. Two resonant modes are excited at 6. 76 GHz and 9.11 GHz, respectively. The peak gains are 3.9 dBi and 1.7 dBi respectively. The -10 dB impedance bandwidth of the two passbands are 6.71 - 6.8 GHz and 9.08 - 9.14 GHz, respectively.