A Printed Single-Layer UWB Monopole Antenna With Extended Ground Plane Stubs

作者:Xu, Kuiwen*; Zhu, Zhongbo; Li, Huan; Huangfu, Jiangtao; Li, Changzhi; Ran, Lixin
来源:IEEE Antennas and Wireless Propagation Letters, 2013, 12: 237-240.
DOI:10.1109/LAWP.2013.2247555

摘要

In this letter, a compact coplanar-waveguide-fed single-layer printed antenna with an ultrawideband (UWB) rectangular monopole radiator etched with a half-elliptical slot is presented. Collaborating with the UWB radiator, two symmetrical open-circuit stubs are extended from the ground plane to jointly achieve an ultrawideband impedance match with a compact size. The proposed antenna is fabricated and tested in an anechoic chamber, showing an ultrawide operating frequency range from 3.7 to 10.1 GHz with a quasi-omnidirectional gain from 2.0 to 7.3 dBi. With the advantages of a reduced size, an improved voltage standing wave ratio (VSWR), and a monolayer configuration without any back ground plane, the proposed antenna can be used in a wide range of UWB applications.