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Cavity‐model analysis of a slot‐coupled cylindrical‐rectangular microstrip antenna
Author(s) -
Wong KinLu,
Chen JinSen
Publication year - 1995
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.4650090305
Subject(s) - admittance , input impedance , electrical impedance , microstrip , microstrip antenna , slot antenna , acoustics , equivalent circuit , patch antenna , transformer , engineering , electrical engineering , antenna (radio) , electronic engineering , physics , voltage
An equivalent circuit of a slot‐coupled cylindrical‐rectangular microstrip antenna is constructed by describing the patch admittance seen at the slot position using the cavity‐model method and calculating the slot self‐admittance simply from a short‐circuited slot line. An impedance transformer is also introduced in the circuit to transform the patch admittance and the slot self‐admittance into a series load as seen by the feed line. The input impedance of the antenna is then readily obtained. Typical numerical results of the input impedance are presented and discussed. © 1995 John Wiley & Sons, Inc.