A Broad-Band Annular-Ring Microstrip Antenna

Weng Cho Chew

Research output: Contribution to journalArticle

Abstract

A heuristic discussion of the radiation properties of the transverse magnetic (TM11) and (TM12) modes of the annular-ring microstrip antenna is presented, indicating the possibility of the TM12 mode as a superior microstrip antenna. Rigorous analyses of the resonant frequency characteristics of the antenna are then performed with the matched asymptotic expansions technique and the perturbation approach. The analyses show that the TM 12 mode is decidedly the best mode for microstrip antenna applications while the TM11mode, having a high (Q-factor, is best reserved for resonator applications. The analyses include the study of the resonant frequencies, band-widths, and radiation pattern of the antenna. The matched asymptotic expansions technique and the perturbation approach are also shown to agree excellently with each other within their domain of validity.

Original languageEnglish (US)
Pages (from-to)918-922
Number of pages5
JournalIEEE Transactions on Antennas and Propagation
Volume30
Issue number5
DOIs
StatePublished - Sep 1982

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microstrip antennas
Microstrip antennas
broadband
rings
Natural frequencies
Antennas
resonant frequencies
Q factors
antennas
Directional patterns (antenna)
perturbation
Frequency bands
expansion
Resonators
radiation
Bandwidth
Radiation
resonators
bandwidth

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

A Broad-Band Annular-Ring Microstrip Antenna. / Chew, Weng Cho.

In: IEEE Transactions on Antennas and Propagation, Vol. 30, No. 5, 09.1982, p. 918-922.

Research output: Contribution to journalArticle

Chew, Weng Cho. / A Broad-Band Annular-Ring Microstrip Antenna. In: IEEE Transactions on Antennas and Propagation. 1982 ; Vol. 30, No. 5. pp. 918-922.
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