Implementation and experimental verifications of microstrip antennas for angular scanning of a Doppler radar

THE MICROSTRIP ARRAY ANTENNA WITH REFLECTOR at 1.4 AND 2.4 GHz for RADARS APPLICATIONS

“…Doppler radar has an active role in the non-contact monitoring of vital signs by being applied in healthcare areas. For this purpose, many studies observed in the literature the heartbeats and respirators for monitoring people's daily activities with Doppler radar (Benchetrit, 2000;Gu et al, 2019;Huang et al, 2016;Javaid et al, 2015;Karatay, Orcan, Özkal, & Yaman, 2019;Klavestad, Assres, Fagernes, & Grønli, 2020;M. Li & Lin, 2017;J.…”

“…Different antenna types can be preferred according to the usage areas of radars. Among these antenna types, microstrip patch antennas are frequently used in short-range Doppler radars, especially in health following and observing with their advantages such as lightness, ease of production, and low production cost (Gu et al, 2019;Karatay et al, 2019;M. Li & Lin, 2017;Neebha & Nesasudha, 2018).…”

“…In this study, the designs of an aperture-coupled Vivalti-type transmitter patch antenna and a microstrip array patch antenna were proposed operating at the frequencies of 2.45 GHz. FR-4 substrate material was used in the production of these antennas, and they had gains of 3.23 and 5.63 dBi, respectively (Karatay et al, 2019). In another study, four different microstrip patch antennas were designed for radar applications in the 5-8 GHz span, and these antennas were compared to their reflection coefficients (Neebha & Nesasudha, 2018).…”