Design of a Novel Coplanar Waveguide Fed Ku-Band Quasi-Yagi Patch Antenna
LI Yuanhao
NIU Huijuan
CHEN Qingtao
WEI Jian
DUAN Xiaofeng
LIU Kai
HUANG Yongqing
Abstract：This paper designs a Ku-band quasi-Yagi"patch"antenna,which is based on a coplanar waveguide structure,with a center frequency of 15 GHz.This antenna has a relatively simple structure with a wide operating frequency band and high gain characteristics.This design achieves the change of in-ductance or capacitance within a specific frequency range by analyzing,adding and optimizing the vertical parasitic"patches",thereby achieving the purpose of improving the antenna bandwidth.This design also shows that by adding horizontal"patches"at both ends of the vertical"patches"on both sides,the antenna bandwidth can be further improved by adjusting the direction of the horizontal"patches"and changing the parameters of the parasitic"patches".The working frequency band of the quasi-Yagi"patch"antenna pro-posed in this design is 13.3％higher than the relative bandwidth of the initial antenna.The peak gain in the working frequency band reaches 8.3 dBi,while the average gain reaches 7.5 dBi and the average effi-ciency is 75％.The new designed antenna can be widely used in wireless communication systems and can be used as an array element to support the design of phased arrays,active arrays and millimeter-wave ima-ging arrays.
Keywords：coplanar waveguide fedKu bandQuasi-Yagi antennaparasitic"patches"relative band-width
Publication Date：2024-10-28
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：8( 60-67 )