Frequency-reconfigurable coplanar patch antenna with conical radiation

Jeen Sheen Row, Ting Yi Lin

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


A design for frequency-reconfigurable antennas with conical-beam radiation is described. The design is based on the TM 02 mode of a coplanar annular-ring microstrip antenna, and several shorting strips are symmetrically placed along the circumference of the radiating patch to vary its resonant frequency. The effects of the number of the shorting strips on the resonant frequency and radiation characteristic are respectively investigated. The obtained results indicate that the resonant frequency of the microstrip antenna has an increase of 33% when the number of the shorting strips is varied from 0 to 16. In addition, the antenna radiation can remain the conical beam pattern with the increasing of frequency. A frequency-reconfigurable prototype with electrical switching between 4.8 and 6 GHz has also been fabricated, and the experimental results are given.

Original languageEnglish
Article number5638600
Pages (from-to)1088-1091
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 2010 Dec 16

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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