ABSTRACT
The present epidemic of coronavirus (COVID-19) was originated in Wuhan, China, on 31 December 2019. After that, it spread worldwide, and continues to this day. Its affects are deadly and keeps all countries around the world in lockdown. Countries are fighting with it by keeping lockdown and by developing vaccines to save human life. Due to this pandemic situation, people who have other diseases are in fear to go to hospitals because of infections. Many medical devices are available to monitor ourselves at home itself, like oximeters, thermometer, blood pressure monitoring devices, and blood sugar monitoring devices. If similar devices were available for breast cancer detection, it would help many women to save their lives and get treatment in time. This chapter focuses on such technology that is known as microwave imaging technology, where wideband antennas play a vital role. The design of such antennas is a challenge for researchers;here, few of the designs of ultra-wideband antenna are presented. © 2022 Scrivener Publishing LLC.
ABSTRACT
This paper presents a novel unique single-layer dual-polarized microstrip patch antenna array with a COVID-19 shape designed for building a Base Station (BS) for sub-6 GHz applications at the resonant frequency 3.16 GHz. Furthermore, it is easy to fabricate and compact, which makes it suitable for 5G applications. Firstly, a single-element fractal shape antenna with a gain of 3 dB is discussed. Secondly, an 8-element 2x4 antenna array is designed with a gain of 8 dB. The antenna is fabricated using an FR4-epoxy double-sided copper board with a thickness of 1.6 mm. It is optimized by performing parametric studies of the dimensions using the finite element method (FEM) software program HFSS. The printed prototype measurements including S-parameters, polarization, and radiation pattern show a good agreement with simulation results. © 2022 IEEE.
ABSTRACT
This paper presents a novel unique microstrip fractal patch antenna with a COVID-19 shape designed for wireless applications. The COVID-19 antenna is a compact, miniature size, multiband, low weight, and low-cost patch antenna;the demonstrated patch antenna, simulated using the HFSS software program, consists of a circular printed patch with a radius of 0.4 cm surrounded by 5 pairs of crowns. The antenna is implemented on a double-sided copper plate with an FR4-epoxy substrate of 1 × 1 cm2 area and 1.6 mm thickness. This small patch operates and resonates on two frequencies 7.5 GHz and 17 GHz within C and Ku bands, respectively. The simulated and measured gains were respectively 0.8 dB and 0.2 dB at the lower frequency and 2.21 dB and 2 dB at the higher frequency. A coaxial probe feeding method is used in the simulation, and printed prototypes showed excellent consistency between measured and simulated resonance frequencies. © 2022, Electromagnetics Academy. All rights reserved.