Multilayer dielectric cavity antenna design for wide bandwidth

K. J. Lee, J. A. Lee, Moonil Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The dimension optimization of a rectangular cavity antenna is presented in this letter. The cavity antenna is fabricated in a multilayer substrate. The antenna operation is based on lowest order TE 101 cavity mode. The antenna performance can be predicted using a simple equivalent model for a dielectric cavity. The estimated antenna bandwidth using the quality-factor of the cavity model indicates that the larger aperture and thinner thickness is the wider bandwidth becomes. In this letter, however, the aperture size is limited to operating in a single mode. The antenna sample is fabricated in multilayer FR4 substrates with a dielectric constant of 4.4, so that it operates at 7.2 GHz. The antenna with enhanced bandwidth has an aperture size of 32 × 10 mm 2 and total thickness of 4.3 mm. The measured 10-dB bandwidth is 12.1% and the radiation pattern confirms that it operates in a single mode.

Original languageEnglish
Pages (from-to)2046-2049
Number of pages4
JournalMicrowave and Optical Technology Letters
Volume54
Issue number9
DOIs
Publication statusPublished - 2012 Sep 1

Fingerprint

antenna design
Multilayers
antennas
Antennas
bandwidth
Bandwidth
cavities
apertures
Substrates
Q factors
Permittivity
permittivity
optimization
radiation

Keywords

  • bandwidth
  • cavity antenna
  • dielectric resonator
  • multilayer substrate

ASJC Scopus subject areas

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

Cite this

Multilayer dielectric cavity antenna design for wide bandwidth. / Lee, K. J.; Lee, J. A.; Kim, Moonil.

In: Microwave and Optical Technology Letters, Vol. 54, No. 9, 01.09.2012, p. 2046-2049.

Research output: Contribution to journalArticle

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