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Radiation Efficiency and Gain Bounds for Microstrip Patch Antennas

Nel, Ben A.P. LU ; Skrivervik, Anja K. and Gustafsson, Mats LU orcid (2024) In IEEE Transactions on Antennas and Propagation
Abstract

This paper presents bounds on radiation efficiency and gain for microstrip patch antennas, demonstrating close alignment with the performance of classic antenna designs. These bounds serve as effective benchmarks for assessing antenna performance and evaluating trade-offs and design feasibility. The study particularly addresses the trade-off between miniaturization and performance by comparing bounds for antennas of similar size and frequency, achieved either by using high-permittivity substrates or by optimizing the metallic patch design area. To enhance usability, scaling laws are applied, enabling these bounds to be approximated across a range of frequencies using only data from a half-wavelength patch antenna simulation or... (More)

This paper presents bounds on radiation efficiency and gain for microstrip patch antennas, demonstrating close alignment with the performance of classic antenna designs. These bounds serve as effective benchmarks for assessing antenna performance and evaluating trade-offs and design feasibility. The study particularly addresses the trade-off between miniaturization and performance by comparing bounds for antennas of similar size and frequency, achieved either by using high-permittivity substrates or by optimizing the metallic patch design area. To enhance usability, scaling laws are applied, enabling these bounds to be approximated across a range of frequencies using only data from a half-wavelength patch antenna simulation or measurement. Additionally, the study finds a strong correlation between the established radiation efficiency bounds and lower Q-factor limits (indicative of maximum bandwidth). This relationship is highly advantageous in the design process, as it illustrates how bandwidth and radiation efficiency can be optimized together.

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Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
gain, method of moments, Microstrip patch antennas, physical bounds, radiation efficiency
in
IEEE Transactions on Antennas and Propagation
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85212549388
ISSN
0018-926X
DOI
10.1109/TAP.2024.3514318
language
English
LU publication?
yes
id
2b2383e7-ab9c-4337-8895-7ea4f4392ea7
date added to LUP
2025-01-28 12:41:02
date last changed
2025-04-04 15:07:31
@article{2b2383e7-ab9c-4337-8895-7ea4f4392ea7,
  abstract     = {{<p>This paper presents bounds on radiation efficiency and gain for microstrip patch antennas, demonstrating close alignment with the performance of classic antenna designs. These bounds serve as effective benchmarks for assessing antenna performance and evaluating trade-offs and design feasibility. The study particularly addresses the trade-off between miniaturization and performance by comparing bounds for antennas of similar size and frequency, achieved either by using high-permittivity substrates or by optimizing the metallic patch design area. To enhance usability, scaling laws are applied, enabling these bounds to be approximated across a range of frequencies using only data from a half-wavelength patch antenna simulation or measurement. Additionally, the study finds a strong correlation between the established radiation efficiency bounds and lower Q-factor limits (indicative of maximum bandwidth). This relationship is highly advantageous in the design process, as it illustrates how bandwidth and radiation efficiency can be optimized together.</p>}},
  author       = {{Nel, Ben A.P. and Skrivervik, Anja K. and Gustafsson, Mats}},
  issn         = {{0018-926X}},
  keywords     = {{gain; method of moments; Microstrip patch antennas; physical bounds; radiation efficiency}},
  language     = {{eng}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Transactions on Antennas and Propagation}},
  title        = {{Radiation Efficiency and Gain Bounds for Microstrip Patch Antennas}},
  url          = {{http://dx.doi.org/10.1109/TAP.2024.3514318}},
  doi          = {{10.1109/TAP.2024.3514318}},
  year         = {{2024}},
}