Optimum Functions for Radial Wires of Monopole Antennas with Arbitrary Elevation Angles

Fartookzadeh, Mahdi; Armaki, S. H. Mohseni; Razavi, S.M.J.; Rashed-Mohassel, J.

doi:10.13164/re.2016.0053

Cited by 3 publications

(1 citation statement)

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“…However, there appears to be limited traceable data to validate and quantify the practice. Nevertheless, for an extreme case that the ground plane is completely not available (i.e., antenna on the earth with highly resistive dry soil), using counterpoise such as radial wires [12] bent downwards demonstrates to partially simulate the ground plane equivalent to a half-wave dipole, though such configuration is out of the scope of this study that assumes a solid ground plane in place.…”

Section: Introductionmentioning

confidence: 99%

Performance Limits of 433 MHz Quarter-wave Monopole Antennas due to Grounding Dimension and Conductivity

Li¹

2022

AETiC

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Among antennas for Industrial, Scientific and Medical (ISM band) applications at 433 MHz, quarter-wave monopole is a reasonably good trade-off between size, gain, and cost. The electrical performance of the monopole is largely dependent on the quality of the ground plane (size and conductivity), which exhibits a practical limit on the achievable gain as most industrial user environments can provide only a finite ground plane of finite electrical conductivity. Establishing traceability in understanding the performance degradation due to such limits due to the grounding dimension and conductivity is becoming mandatory. To this end, this work leverages universal MATLAB in place of off-the-shelf software (HFSS or CST) for the quarter-wave monopole antenna simulation at 433 MHz parametrised with the ground plane’s dimension with respect to the wavelength (λ). Results indicate that by enlarging the ground plane’s size from 0.14 λ to 14 λ, the gain (directivity for PEC) from the 3D radiation pattern rises from 1.79 dBi, then starts levelling off at 6.7 dBi (5.78 λ), until saturating at 7.49 dBi (13 λ). The radiation efficiency and gain of various grounding conductivity scenarios (e.g., gold, aluminium, steel) are also quantified to inform antenna designers and engineers for commercial, industrial, defence and space applications.

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Section: Introductionmentioning

confidence: 99%