A novel U-shaped parasitic asymmetric microstrip cap loaded compact patch antenna

M. R. Zaman, Mohammad Tariqul Islam, Salehin Kibria

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A novel electromagnetically short antenna with parasitic microstrip cap shape is shown in this paper. The antenna is composed of a U-shaped parasitic microstrip line (cap) excited by coupling with the feed line at patch. The antenna is fabricated in FR4 substrate with dielectric constant, Er=4.55 and thickness of 1.6 mm. Optimization of the proposed antenna is done using modified Particle Swarm Optimization (PSO) algorithm in ZELAND IE3D software environment. That gives resonance at selected frequencies and increased gain than the initial design. By using circular slot at the ground plane with miniaturized structure, dualband covering 5.29 GHz to 5.89 GHz (C-band) and 7.93 GHz to 8.86 GHz (X-band) is achieved. A fractional bandwidth of 10.74% at C-band and 11.08% at X-band is achieved. A measured gain of 5.65 dBi and 6.61 dBi is achieved at C-band and Xband respectively, with a circular polarization. Gain improvement is achieved compared to the initial design by more than 2 dBi (average) in the selected frequency for the given resonance using modified PSO optimization.

Original languageEnglish
Pages (from-to)191-203
Number of pages13
JournalApplied Computational Electromagnetics Society Journal
Volume30
Issue number2
Publication statusPublished - 1 Feb 2015

Fingerprint

patch antennas
Microstrip antennas
caps
C band
antennas
Antennas
optimization
superhigh frequencies
Particle swarm optimization (PSO)
Circular polarization
Microstrip lines
Antenna feeders
circular polarization
slots
coverings
Permittivity
permittivity
bandwidth
computer programs
Bandwidth

Keywords

  • C-band
  • Coupled line
  • Optimization
  • PSO
  • U-shape
  • X-band

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Electrical and Electronic Engineering

Cite this

A novel U-shaped parasitic asymmetric microstrip cap loaded compact patch antenna. / Zaman, M. R.; Islam, Mohammad Tariqul; Kibria, Salehin.

In: Applied Computational Electromagnetics Society Journal, Vol. 30, No. 2, 01.02.2015, p. 191-203.

Research output: Contribution to journalArticle

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