Title :
A dual CP slot antenna using a modified Wilkinson power divider configuration
Author :
Tseng, Wen-Jen ; Chung, Shyh-Jong
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
5/1/1998 12:00:00 AM
Abstract :
A dual circularly polarized (CP) slot antenna based on a proposed equal-split Wilkinson power divider is presented. An offset-fed slot antenna, which was analyzed using the method of moments together with a mixed potential integral equation, was used to replace the lumped resistor in the divider. A dual CP slot antenna operating at S-band was designed and demonstrated experimentally. The antenna possessed a return loss bandwidth of 39.3%, an isolation bandwidth of 10% for VSWR <2, and 3-dB axial ratio bandwidth of 28%
Keywords :
antenna feeds; electromagnetic wave polarisation; method of moments; power dividers; slot antennas; S-band; dual CP slot antenna; dual circularly polarized antenna; equal-split power divider; method of moments; mixed potential integral equation; modified Wilkinson power divider; offset-fed slot antenna; Bandwidth; Impedance; Integral equations; Microstrip antennas; Moment methods; Polarization; Power dividers; Resistors; Slot antennas; Transformers;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
