TY - JOUR
T1 - Optimal Bandwidth Positions for a Terminal Embedded Antenna
T2 - Physical Bounds and Antenna Design
AU - Jonsson, B. L. G.
AU - Ferrero, Fabien
AU - Shi, Shuai
AU - Wang, Lei
PY - 2021/4
Y1 - 2021/4
N2 - 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.
AB - 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.
U2 - 10.1109/TAP.2020.3026921
DO - 10.1109/TAP.2020.3026921
M3 - Article
SN - 0018-926X
VL - 69
SP - 1931
EP - 1941
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 4
ER -