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

B. L. G. Jonsson, Fabien Ferrero, Shuai Shi, Lei Wang

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
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Abstract

This paper considers a small embedded planar antenna in a square-shaped terminal of 25 cm2 at a frequency band near 900 MHz, intended for long-range communication. This paper 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.
Original languageEnglish
JournalIEEE Transactions on Antennas and Propagation
Early online date1 Oct 2020
DOIs
Publication statusE-pub ahead of print - 1 Oct 2020

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