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Journal of Shanghai University（Natural Science Edition）

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Printed Monopole Antenna with Impedance Bandwidth Exceeding 21∶1

ZHONG Shun-shi1, LIANG Xian-ling1, ZHANG Li-na1, WANG Wei2
  

  1. 1. School of Communication and Information Engineering, Shanghai University, Shanghai 200072， China；2. East China Research Institute of Electronic Engineering, Hefei 230031, China
  • Received:2007-02-28 Revised:1900-01-01 Online:2007-08-20 Published:2007-08-20
  • Contact: ZHONG Shun-shi

Abstract: A printed monopole antenna with an extremelywide bandwidth is proposed, which consists of an elliptical monopole patch and a coplanar trapezoid ground plane. A tapered coplanar waveguide (CPW) feeder in the middle of the ground plane is used to feed the monopole. The simulated and experimental results demonstrate that this antenna achieves a ratio bandwidth of 21.6∶1 for VSWR≤2, covering the frequency range from 0.41 to 8.86 GHz. It has good omnidirectional radiation characteristics, with a small area of only about 0.19λl×0.16λl, where λl is the wavelength of the lowest operating frequency.

Key words: miniaturization
, super-wideband (SWB), tapered CPW, trapezoid ground plane, printed monopole antenna

CLC Number: