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Closed form expressions to find the far‐field patterns of an equilateral triangular dielectric resonator antenna for various higher order modes
Author(s) -
Maity Sudipta,
Gupta Bhaskar
Publication year - 2021
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.22475
Subject(s) - equilateral triangle , dielectric resonator antenna , near and far field , resonator , dielectric , antenna (radio) , physics , dielectric resonator , acoustics , order (exchange) , field (mathematics) , mathematics , telecommunications , optics , geometry , computer science , optoelectronics , pure mathematics , economics , finance
In this work, an equilateral triangular dielectric resonator antenna (ETDRA) is modeled as a source free dielectric cavity, bounded by perfect magnetic conductor to investigate its radiation characteristics for various TM mnp z modes. Closed form compact expressions are provided to compute the far‐zone radiation patterns for different TM mnp z modes. Radiated power, quality factor, gain, efficiency, bandwidth, etc. are also investigated. Theoretical far‐field radiation patterns are compared with simulated (HFSS) data for first five modes that is, TM 101 ,TM 111 ,TM 201 ,TM 211 and TM 301 modes. Theoretical far‐field patterns are also verified with measured data (our own experimental data and data available, as found in the open literature) for TM 101 ,TM 201 and TM 211 modes. It is found that three modes out of first five modes produce a peak in the broad‐side direction. From this investigation, it is also found that different ETDRAs having a fixed value of aspect ratio (side length/height) produce almost same radiated powers, Q‐factor, bandwidth, efficiency, etc. for a fixed value of relative permittivity.