Affiliation:
1. The Shaoxing Integrated Circuit Institute, Hangzhou Dianzi University, Hangzhou 310018, China
2. State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
Abstract
In this study, we present a novel dual-polarized patch antenna that exhibits high isolation and two in-band transmission zeros (TZs). The design consists of a suspended metal patch, two feeding probes connected to an internal neutralization line (I-NL), and a T-shaped decoupling network (T-DN). The I-NL is responsible for generating the first TZ, and its decoupling principles are explained through an equivalent circuit model. Rigorous design formulas are also derived to aid in the construction of the feeding structure. The T-DN realizes the second TZ, resulting in further improvement of the decoupling bandwidth. Simulation and experimental results show that the proposed antenna has a wide operating bandwidth (2.5–2.7 GHz), high port isolation (>30 dB), and excellent efficiency (>85%).
Funder
State Key Laboratory of Millimeter Waves
National Natural Science Foundation of China
Fundamental Research Funds for the Provincial Universities of Zhejiang
Subject
Electrical and Electronic Engineering,Mechanical Engineering,Control and Systems Engineering