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Modeling and design of T‐probe‐fed patch antennas using the finite difference time domain method
Author(s) -
Guo YongXin,
Luk KwaiMan,
Lee KaiFong
Publication year - 2002
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2001rs002598
Subject(s) - input impedance , electrical impedance , microstrip antenna , patch antenna , acoustics , bandwidth (computing) , antenna (radio) , finite difference method , resonance (particle physics) , mathematics , mathematical analysis , materials science , physics , computer science , telecommunications , atomic physics , quantum mechanics
In this paper, the finite difference time domain method is employed to analyze the T‐probe‐proximity‐fed rectangular patch antennas. With a supporting foam substrate of thickness around 0.1 λ 0 , the patch antenna has shown a bandwidth (SWR ≤ 2) of 40% and an average gain of 7 dBi. Numerical results for the input impedance are presented and compared with the measurements. Good agreement between the computed and measured results is obtained. The effects of geometric parameters on the characteristics of the T‐probe patch antenna are extensively studied. For design purposes, the variations of the input impedance at resonance with different geometric parameters are plotted on Smith charts, and the peak values for the resonant resistance are summarized in tables.