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Double‐slot‐fed microstrip antennas for circular polarization operation
Author(s) -
Aksun M. I.,
Wang Z. H.,
Chuang S. L.,
Lo Y. T.
Publication year - 1989
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650021002
Subject(s) - circular polarization , microstrip , polarization (electrochemistry) , physics , microstrip antenna , electric field , optics , slot antenna , electrical engineering , engineering , antenna (radio) , chemistry , quantum mechanics
Using the cavity model theory, simple design formulas are developed for double‐slot‐fed circularly polarized microstrip antennas. Equivalent magnetic current sources are assumed at the slot positions and then the electric field distribution under the patch is obtained in terms of cavity modes. By applying the circular polarization conditions to the far‐field components of the electric field, the loci of the positions of the slots for the circular polarization operations are found. Experimental results are successfully demonstrated based on the theoretical designs.