Optimal Bandwidth Positions for a Terminal Embedded Antenna: Physical Bounds and Antenna Design

This article considers a small embedded planar antenna in a square-shaped terminal of 25 cm 2 at a frequency band near 900 MHz, intended for long-range communication. This article aims to shows how the Q-factor bounds can be used to predict the performance of such an antenna. Both to determine the o...

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Published in:IEEE transactions on antennas and propagation 2021-04, Vol.69 (4), p.1931-1941
Main Authors: Jonsson, B. L. G., Ferrero, Fabien, Shi, Shuai, Wang, Lei
Format: Article
Language:English
Subjects:
Antenna design
Antenna measurements
Antennas
Bandwidth
Bandwidths
Current measurement
current optimization
Dipole antennas
Efficiency
Electromagnetism
embedded antenna
Engineering Sciences
Frequencies
Optimization
Q-factor
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cited_by cdi_FETCH-LOGICAL-c405t-b4294b9185fe73c33ad1a95e0ee5433d35674118225220c05ae46fe56c910dc53
cites cdi_FETCH-LOGICAL-c405t-b4294b9185fe73c33ad1a95e0ee5433d35674118225220c05ae46fe56c910dc53
container_end_page 1941
container_issue 4
container_start_page 1931
container_title IEEE transactions on antennas and propagation
container_volume 69
creator Jonsson, B. L. G.
Ferrero, Fabien
Shi, Shuai
Wang, Lei
description This article considers a small embedded planar antenna in a square-shaped terminal of 25 cm 2 at a frequency band near 900 MHz, intended for long-range communication. This article aims to shows how the Q-factor bounds can be used to predict the performance of such an antenna. Both to determine the optimal bandwidth and the variations in the total efficiency but also to help to inspire the antenna design shape. The choice of shape and position impacts both bandwidth and efficiency. The latter is illustrated by a center-edge positioned folded inverted F-antenna with higher efficiency, as compared to, a more bandwidth optimal meander antenna at the corner. Fabrication and measurements show that the corner positioned antenna is close to bandwidth optimal, and also that it and the associated optimal current have a similar radiation pattern.
doi_str_mv 10.1109/TAP.2020.3026921
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source IEEE Electronic Library (IEL) Journals
subjects Antenna design
Antenna measurements
Antennas
Bandwidth
Bandwidths
Current measurement
current optimization
Dipole antennas
Efficiency
Electromagnetism
embedded antenna
Engineering Sciences
Frequencies
Optimization
Q-factor
title Optimal Bandwidth Positions for a Terminal Embedded Antenna: Physical Bounds and Antenna Design
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