A slotted uwb antipodal vivaldi antenna for microwave imaging applications

Nurul S. Hasim, Kismet A.H. Ping, Mohammad Tariqul Islam, Md Z. Mahmud, Shafrida Sahrani, Dayang A.A. Mat, Dyg N.A. Zaidel

Research output: Contribution to journalArticle

Abstract

This paper presents the design of an ultra-wideband (UWB) antipodal Vivaldi antenna (APVA) for radar and microwave imaging applications. A slotted APVA design is introduced to improve the low-end bandwidth limitation frequencies as well as to enhance the gain and directivity of the antenna. The optimizations of the design offer good results by using a cost-effective substrate, fiberglass reinforced grade 4 (FR4) material. The regular APVA antenna design only presents average results of gain (4–6 dBi) and directivity (4–7 dB). However, the addition of slots on the edges of antenna is able to increase the peak value of gain and directivity up to 73.65% with 7.64 dBi and 8.92 dB, respectively. Besides, the radiation pattern of the antenna is also improved by using the slotted design where the main lobe level is larger than regular APVA design. Both antennas presented in this paper are designed in compact size of 42.8mm× 57.3mm. The antennas are also designed to operate within the frequency range of 3.6 GHz to 10GHz frequency.

Original languageEnglish
Pages (from-to)35-43
Number of pages9
JournalProgress In Electromagnetics Research M
Volume80
DOIs
Publication statusPublished - 1 Jan 2019
Externally publishedYes

Fingerprint

antennas
Microwaves
Antennas
Imaging techniques
microwaves
antenna design
directivity
glass fibers
slots
lobes
radar
grade
frequency ranges
Directional patterns (antenna)
broadband
Ultra-wideband (UWB)
bandwidth
costs
optimization
Radar

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Hasim, N. S., Ping, K. A. H., Islam, M. T., Mahmud, M. Z., Sahrani, S., Mat, D. A. A., & Zaidel, D. N. A. (2019). A slotted uwb antipodal vivaldi antenna for microwave imaging applications. Progress In Electromagnetics Research M, 80, 35-43. https://doi.org/10.2528/PIERM18121002

A slotted uwb antipodal vivaldi antenna for microwave imaging applications. / Hasim, Nurul S.; Ping, Kismet A.H.; Islam, Mohammad Tariqul; Mahmud, Md Z.; Sahrani, Shafrida; Mat, Dayang A.A.; Zaidel, Dyg N.A.

In: Progress In Electromagnetics Research M, Vol. 80, 01.01.2019, p. 35-43.

Research output: Contribution to journalArticle

Hasim, Nurul S. ; Ping, Kismet A.H. ; Islam, Mohammad Tariqul ; Mahmud, Md Z. ; Sahrani, Shafrida ; Mat, Dayang A.A. ; Zaidel, Dyg N.A. / A slotted uwb antipodal vivaldi antenna for microwave imaging applications. In: Progress In Electromagnetics Research M. 2019 ; Vol. 80. pp. 35-43.
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