NDLI: Ultra-Wideband Dual-Polarized Patch Antenna With Four Capacitively Coupled Feeds

Content Provider	IEEE Xplore Digital Library
Author	Fuguo Zhu Gao, S. Ho, A.T.S. Abd-Alhameed, R.A. See, C.H. Brown, T.W.C. Jianzhou Li Gao Wei Jiadong Xu
Copyright Year	1963
Abstract	A novel dual-polarized patch antenna for ultra-wideband (UWB) applications is presented. The antenna consists of a square patch and four capacitively coupled feeds to enhance the impedance bandwidth. Each feed is formed by a vertical isosceles trapezoidal patch and a horizontal isosceles triangular patch. The four feeds are connected to the microstrip lines that are printed on the bottom layer of the grounded FR4 substrate. Two tapered baluns are utilized to excite the antenna to achieve high isolation between the ports and reduce the cross-polarization levels. In order to increase the antenna gain and reduce the backward radiation, a compact surface mounted cavity is integrated with the antenna. The antenna prototype has achieved an impedance bandwidth of 112% at (\|S11 \| ≤ -10 dB) whereas the coupling between the two ports is below -28 dB across the operating frequency range. The measured antenna gain varies from 3.91 to 10.2 dBi for port 1 and from 3.38 to 9.21 dBi for port 2, with a 3-dB gain bandwidth of 107%.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	2440
Ending Page	2449
Page Count	10
File Size	2695192
File Format	PDF
ISSN	0018926X
Volume Number	62
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ultra wideband antennas Impedance matching Antenna feeds Patch antennas Antenna measurements Bandwidth UWB antenna Capacitively coupled feed dual-polarized antenna patch antenna surface mounted cavity
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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