1Frank Weinmann.Design,Optimization,and Validation of a Planar Nine-Element Quasi-Yagi Antenna Array for X-band Application .IEEE Tans AP, 2007,49 (2) :89-96.
2Frederic Crop and David Mpozar.Milimeter-Wave Design of Wide- band aperture-coupled stacked micros trip antennae.IEEE Trans, 1991,39(12) : 1770-1776.