A Parasitic Resonator-Based Diamond-Shaped Microstrip Antenna for Microwave Imaging Applications

Electronics

卷:8

U.K. Acharjee¹  AliF. Almutairi²  MdZulfiker Mahmud³  MdTarikul. Islam³  Md Samsuzzaman³  MohammadTariqul Islam³ 

[1] Department of CSE, Jagannath University, Dhaka 1100, Bangladesh;

[2] Electrical Engineering Department, Kuwait University, Safat 13060, Kuwait;

[3] Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi 43600 UKM, Selangor, Malaysia;

关键词: microwave imaging;    UWB;    parasitic element;    resonator;    microstrip antenna;   

DOI  :  10.3390/electronics8040434

来源: DOAJ

【 摘 要 】

This study proposes a new parasitic resonator-based diamond-shaped microstrip patch antenna for ultra-wideband microwave imaging applications. The antenna consists of a diamond-shaped radiating patch, partial ground plane, and four-star shape parasitic elements. The use of parasitic elements improves the antenna performance in terms of the bandwidth and gain. The proposed prototype has a compact dimension of 30 × 25 × 1.6 mm³. The antenna achieves an overall bandwidth (S₁₁<-10dB) of 7.6 GHz (2.7–10.3 GHz) with more than 4 dBi realized gain and 80% efficiency across the radiating bandwidth. The modified structures of the design extended the usable upper frequency from 9.7 GHz to 10.3 GHz, and the lower frequency is decreased from 3.4 GHz to 2.7 GHz with maintaining the omnidirectional radiation pattern. The design and simulation of the antenna are performed in the 3D electromagnetic simulator CST Microwave Studio. The proposed antenna is used for breast phantom measurement system to analyze the variation of backscattering signal and transmit-received pulses. The observation during the analysis of the numerical and measured data reveals that the designed antenna is a suitable candidate for ultra-wideband (UWB)-based microwave imaging applications.

【 授权许可】

Unknown