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Experimental investigations on the impedance and radiation properties of a three‐element concentric microstrip square‐ring antenna
Author(s) -
Misra I. Saha,
Chowdhury S. K.
Publication year - 1996
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/(sici)1098-2760(19960205)11:2<66::aid-mop5>3.0.co;2-m
Subject(s) - microstrip antenna , concentric , microstrip , radiation pattern , optics , patch antenna , antenna (radio) , acoustics , physics , engineering , geometry , electrical engineering , mathematics
Experimental investigation on an electromagnetically coupled concentric microstrip square‐ring antenna (CMSRA) has been presented. Our previous work on concentric microstrip annular‐ring resonators revealed that the impedance and radiation bandwidth can be improved considerably. A three‐element CMSRA has been designed and its measured impedance and radiation patterns have been compared with those of a single square‐ring antenna having a dimension equal to the largest element of the CMSRA. The effect of change of feed location has also been studied. Results show that the total percent bandwidth (BW) for the concentric microstrip square ring antenna is larger with respect to the single‐ring antenna, and this effect is very much prominent at a particular feed location. © 1996 John Wiley & Sons, Inc.