A Differentially Fed Dual-polarized TEM Horn Antenna with Stacked Multilayer PCB Technology

This contribution presents a differentially fed dual-polarized TEM horn antenna, which consists of a stacked multilayer PCB (printed circuit board) and an integrated feeding network. It is a feasible and convenient process for the TEM horn antenna in a compact size by discretely equivalenting a three-dimensional curved surface into two-dimensional planes. The simulated results show that the proposed antenna has a ultrawide differential impedance bandwidth of 98.75% (12.35-36 GHz) for <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\vert S_{\mathrm{d}\mathrm{d}11}\vert &lt; -10\text{dB}$</tex> and a differential port isolation of more than 50 dB. Additionally, the radiation efficiency is more than 90% over the entire operation band and a low profile is achieved. The good performance of the proposed antenna means it can be applied in satellite communication from the Ku to Ka band and mm-wave array antenna.