Title :
Radiation characteristics of higher-order modes in microstrip ring antenna
Author :
Das, A. ; Mathur, S.P. ; Das, Sajal K.
Author_Institution :
University of Delhi, Delhi College of Engineering, Department of Electrical Engineering, New Delhi, India
fDate :
4/1/1984 12:00:00 AM
Abstract :
The results of the theoretical analysis of modal fields and radiation characteristics of the microstrip ring antenna are presented. Radiation patterns for the different modes are derived from the fringing fields at the inner and outer peripheries of the ring. Theoretical patterns are compared with experimental results at 1.8 GHz. The analyses show that the TM1m-modes (m = 2, 4, 6, ¿¿) are suitable for broadband boresight antennas while TM1m-modes (m = 1,3,¿¿) may be used for narrowband boresight antennas.
Keywords :
antenna radiation patterns; antenna theory; strip line components; waveguide antennas; 1.8 GHz; broadband boresight antennas; fringing fields; higher-order modes; microstrip ring antenna; microwave antenna; modal fields; narrowband boresight antennas; radiation characteristics; radiation patterns;
Journal_Title :
Microwaves, Optics and Antennas, IEE Proceedings H
DOI :
10.1049/ip-h-1.1984.0020
