Title :
Novel singly-fed rectangular microstrip patch elements for circular polarisation
Author :
Chung, Kwok L. ; Mohan, Ananda S.
Author_Institution :
Cooperative Res. Centre for Satellite Syst., Univ. of Technol., Sydney, NSW, Australia
Abstract :
This paper presents two novel types of singly-fed circularly polarised microstrip radiating elements that use multilayer substrates. The antenna elements are designed to operate in S-band with a centre frequency of 2.45 GHz. The measured impedance bandwidths (VSWR⩽2) are 23% and 14% while the computed 3-dB axial-ratio bandwidths are 7% and 2% respectively. Important radiation characteristics such as gain bandwidth, cross polarisation and front-to-back ratio of these elements have also been examined and compared
Keywords :
antenna feeds; electromagnetic wave polarisation; microstrip antennas; 2.45 GHz; S-band; antenna elements; axial-ratio bandwidth; circular polarisation; cross polarisation; front-to-back ratio; gain bandwidth; impedance bandwidths; microstrip radiating elements; multilayer substrates; singly-fed rectangular microstrip patch elements; Apertures; Bandwidth; Dielectric constant; Dielectric substrates; Feeds; Impedance; Microstrip; Nonhomogeneous media; Phased arrays; Polarization;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985382
