Design of Dumbbell Shaped DGS-Notch Patch Antenna for Microwave Imaging System

Chee Ka Chin, Dayang Azra binti Awang Mat, Mohamad Nizam Truna, Dyg Norkhairunnisa Abg Zaidel, H. Kanaya, Shafrida Sahrani, Kismet anak Hong Ping, Kuryati Kipli, Annie ak Joseph

Research output: Contribution to journalArticlepeer-review


In this paper, square Microstrip Patch Antenna with notch is designed with dumbbell shaped DGS for microwave imaging system. The antenna is designed on dielectric substrate, FR-4 with relative permittivity, ε r = 4.7 and thickness, 1.6mm. The dumbbell shaped DGS act as the resonant structures and is placed as the ground layer of the antenna. Different location and size of dumbbell shaped DGS are simulated and analyzed. The result of return loss, radiation pattern and antenna gain are simulated using Electromagnetic Simulation Tools, fabricated and measured using Wave and Antenna Training System (WATS 2002). The design shows better performance with return loss of -38.99 dB and higher antenna gain of 6.20 dB compare to the conventional design, with return loss of -30.21 dB and antenna gain of 5.48 dB respectively.

Original languageEnglish
Pages (from-to)94-104
Number of pages11
JournalInternational Journal of Integrated Engineering
Issue number6
Publication statusPublished - 2020

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Materials Science (miscellaneous)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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