Title :
Hansen-Woodyard Condition for 2-D Leaky-Wave Antennas
Author :
Chaoqun Zhang ; Jackson, David R. ; Yunliang Long
Author_Institution :
Dept. of Electron. & Commun. Eng., Sun Yat-sen Univ., Guangzhou, China
Abstract :
A Hansen-Woodyard condition is developed for a 2-D radial leaky-wave antenna. The optimum phase constant that gives maximum endfire directivity is calculated for two cases; one considers the array factor only and the other includes the element pattern. A comparison between 1-D and 2-D Hansen-Woodyard conditions for leaky-wave antennas is made. The optimum radiation efficiency that maximizes the endfire gain of a 2-D leaky-wave antenna is also found.
Keywords :
antenna arrays; leaky wave antennas; 2D leaky wave antennas; Hansen Woodyard condition; maximum endfire directivity; optimum phase constant; Apertures; Approximation methods; Arrays; Attenuation; Leaky wave antennas; Substrates; Surface waves; 2-D Hansen-Woodyard condition; Endfire; leaky wave antenna;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2014.2307312
