Analysis and design of circularly polarized traveling wave printed line antennas

Author

Roscoe, D.J. ; Ittipiboon, A. ; Shafai, L.

Author_Institution

Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man., Canada

fYear

1990

fDate

7-11 May 1990

Firstpage

648

Abstract

The development and design of circularly polarized microstrip line antennas which have broader input impedance bandwidths than patch antennas are presented. The configuration is based upon a traveling-wave microstrip line antenna. The radiation mechanism of this type of structure arises from the discontinuities along the line. Radiation occurs due to the imbalance of oppositely imposed magnetic currents along the edges of the line discontinuities. The antenna demonstrated a radiation efficiency dependent upon the height above the ground plane. The broadside circularly polarized radiation pattern was obtained by geometrically shaping the microstrip line. This structure is a suitable element for phased-array antennas when a slot-coupled feeding mechanism is utilized.<>

Keywords

antenna radiation patterns; antenna theory; antenna travelling wave arrays; electromagnetic wave polarisation; microstrip antennas; microwave antenna arrays; broadside circularly polarized radiation pattern; circularly polarized traveling wave printed line antennas; design; development; line discontinuities; oppositely imposed magnetic currents; phased-array antennas; radiation efficiency; radiation mechanism; slot-coupled feeding mechanism; traveling-wave microstrip line antenna; Bandwidth; Frequency; Impedance; Magnetic analysis; Microstrip antenna arrays; Microstrip antennas; Optical arrays; Optical polarization; Patch antennas; Phased arrays;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.

Conference_Location

Dallas, TX, USA

Type

conf

DOI

10.1109/APS.1990.115193

Filename

115193