Design of frequency-agile microstrip antennas with conical-beam radiation

Jia Fu Tsai, Jeen Sheen Row

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A microstrip antenna with frequency agility is described in this article.The antenna has a circular radiating patch and operates at its TM 01 mode to generate omnidirectional radiation across the azimuthal plane. To change the resonant frequency, a capacitor is introduced and connected to the antenna input port in series. With the increasing of capacitance, the resonant frequency is decreased while the resonant resistance and radiation characteristic nearly remain constant. Experimental results indicate that the design can provide a frequency tunable range of 22%; moreover, good impedance matching and stable radiation pattern are also obtained in the range.

Original languageEnglish
Pages (from-to)783-785
Number of pages3
JournalMicrowave and Optical Technology Letters
Volume53
Issue number4
DOIs
Publication statusPublished - 2011 Apr 1

Fingerprint

microstrip antennas
Microstrip antennas
Natural frequencies
Frequency agility
Antennas
Radiation
resonant frequencies
radiation
antennas
Capacitors
Capacitance
impedance matching
capacitors
capacitance

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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Design of frequency-agile microstrip antennas with conical-beam radiation. / Tsai, Jia Fu; Row, Jeen Sheen.

In: Microwave and Optical Technology Letters, Vol. 53, No. 4, 01.04.2011, p. 783-785.

Research output: Contribution to journalArticle

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AB - A microstrip antenna with frequency agility is described in this article.The antenna has a circular radiating patch and operates at its TM 01 mode to generate omnidirectional radiation across the azimuthal plane. To change the resonant frequency, a capacitor is introduced and connected to the antenna input port in series. With the increasing of capacitance, the resonant frequency is decreased while the resonant resistance and radiation characteristic nearly remain constant. Experimental results indicate that the design can provide a frequency tunable range of 22%; moreover, good impedance matching and stable radiation pattern are also obtained in the range.

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