Abstract
A loop antenna can radiate a circularly polarised (CP) wave when two perturbation segments are used. We investigate a novel loop array antenna radiating a CP wave. The loops are linearly arrayed, and excited by a continuous feed line. The array belongs to a class of cascaded array antennas that are characterised by their simple feed. The loop array antenna is numerically investigated to form a CP beam. The method of moments is used to analyse the current distribution along the loops and feed line, and the radiation characteristics of the array antenna are evaluated using the determined current distribution. The CP beam is formed in the direction normal to the antenna plane. The guided wavelength of the current is estimated to realise the broadside beam. Using the estimated guided wavelength, the loop configuration and feed line length are appropriately chosen for radiation of a CP wave. The frequency response of the radiation characteristics, including the radiation pattern, axial ratio, and gain, are also presented and discussed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.