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Modal analysis of probe‐fed circular sector microstrip antenna with and without variable air gap: Investigation with modified cavity model
Author(s) -
Ghosh Sudip Kumar,
Chakraborty Subhradeep,
Singh L. Lolit Kumar,
Chattopadhyay Sudipta
Publication year - 2018
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.21172
Subject(s) - hfss , modal , modal analysis , ground plane , microstrip , microstrip antenna , substrate (aquarium) , acoustics , permittivity , antenna (radio) , air gap (plumbing) , electronic engineering , engineering , materials science , computer science , physics , telecommunications , electrical engineering , dielectric , vibration , composite material , oceanography , polymer chemistry , geology
Determination of accurate modal fields is one of the most crucial issues to understand the proper behavior of circular sector microstrip antennas (CSMAs) to achieve the best performance. In this article, dominant and higher order modal characteristics have been rigorously studied which germinate an improved, accurate, and efficient computer‐aided design (CAD) formulation to estimate the resonant frequency of CSMA with and without air gap between substrate and ground plane. The proposed formulation can address the wide variety of issues (such as substrate height, substrate permittivity, air gap height, higher order modes, etc.). The computed results were validated against the results obtained from high ‐ frequency structure simulator (HFSS) and our own experiments, while they have been also justified through the results obtained from the available literature.