Title :
Unidirectional antenna with planar reflector for heart failure detection systems
Author :
Rezaeieh, S. Ahdi ; Ahmed, U. Tania ; Abbosh, Amin
Author_Institution :
Sch. of ITEE, Univ. of Queensland Brisbane, Brisbane, QLD, Australia
Abstract :
A broadband monopole antenna with unidirectional radiation is presented. The antenna is specifically designed for microwave systems aimed at the detection of heart failure. A reflector is added to the ground plane of the antenna to both enhance the bandwidth and directivity of the antenna. By the carful design of the radiator and reflector, the antenna achieves a broad operating bandwidth of 35.5% over the operating frequency of 684-980 MHz, which is used for the microwave-based imaging system for heart failure detection. The antenna has a compact size of 0.22 λ × 0.22 λ (where λ is the wavelength of the first resonance of the antenna). It provides a maximum gain of 4.9 dBi at 980 MHz, a stable and unidirectional radiation pattern.
Keywords :
UHF antennas; antenna radiation patterns; broadband antennas; cardiology; directive antennas; microwave imaging; monopole antennas; planar antennas; reflector antennas; antenna bandwidth enhancement; antenna directivity enhancement; broadband monopole antenna; frequency 684 MHz to 980 MHz; heart failure detection systems; microwave-based imaging system; planar reflector; unidirectional antenna radiation pattern; unidirectional radiation; Antenna radiation patterns; Broadband antennas; Heart; Microwave antennas; Microwave imaging; Microwave theory and techniques; broadband antenna; heart failure detection system; monopole antenna; unidirectional antenna;
Conference_Titel :
Antenna Technology: "Small Antennas, Novel EM Structures and Materials, and Applications" (iWAT), 2014 International Workshop on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4799-2331-1
DOI :
10.1109/IWAT.2014.6958629
