Title :
Parallel-Plate Transmission Line and L-Plate Feeding Differentially Driven H-Slot Patch Antenna
Author :
Liao, Shao Wei ; Xue, Quan ; Xu, Jian Hua
Author_Institution :
City Univ. of Hong Kong, Kowloon, China
fDate :
7/4/1905 12:00:00 AM
Abstract :
A newly developed patch antenna, designated as the parallel-plate transmission line and L-plate feeding differentially driven H-slot patch antenna, is presented in this letter. The parallel-plate transmission line will not introduce inductance to the input impedance of a patch antenna, thus the height of the patch can be largely increased. In addition, by employing L-plate feeding and H-slot patch simultaneously, the height of the patch can reach 0.25λ0. Measurements show that the impedance bandwidth can be extended to 115% (0.79-2.94 GHz) and 3-dB-gain bandwidth can be extended to 83% (0.80-1.93 GHz). The radiation pattern is stable, and the maximum gain is 9.9 dBi within the 3-dB-gain bandwidth.
Keywords :
UHF antennas; antenna feeds; high-frequency transmission lines; microstrip antennas; slot antennas; L-plate feeding differentially driven H-slot patch antenna; bandwidth 0.79 GHz to 2.94 GHz; gain 3 dB; impedance bandwidth; input impedance; parallel-plate transmission line; Antenna measurements; Bandwidth; Impedance; Patch antennas; Power transmission lines; Transmission line measurements; 3-dB-gain bandwidth; differentially driven antenna; impedance bandwidth; parallel-plate transmission line;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2203778
