Bandwidth enhancement using Z-shaped defected ground structure for a microstrip antenna

Abhishek Kandwal*, Rakesh Sharma, Sunil Kumar Khah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

A novel design of a circular patch antenna having Z-shaped defected ground structure is presented in this communication. The antenna is designed for X-band applications. A wideband is obtained in the X-band frequency range 8-12 GHz. The return loss and input impedance is measured experimentally and compared with the simulated results. Parameters like impedance bandwidth, voltage standing wave ratio, and antenna gain are calculated and discussed. Impedance bandwidth of about 1.2 GHz is obtained with a gain of 8.7 dBi and side lobe level of -20.1 dB.

Original languageEnglish
Pages (from-to)2251-2254
Number of pages4
JournalMicrowave and Optical Technology Letters
Volume55
Issue number10
DOIs
Publication statusPublished - Oct 2013
Externally publishedYes

Keywords

  • bandwidth
  • defected ground
  • microstrip antenna

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