Premium
A compact wideband circularly polarized antenna with dual SIW cavity modes
Author(s) -
Cheng YouFeng,
Luo Jie,
Peng Fan,
Liao Cheng
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32273
Subject(s) - planar , rectangle , axial ratio , wideband , optics , multi band device , circular polarization , electrical impedance , bandwidth (computing) , waveguide , materials science , antenna (radio) , optoelectronics , physics , electrical engineering , engineering , telecommunications , microstrip , computer science , mathematics , geometry , computer graphics (images)
This letter presents an improved planar circularly polarized antenna with broad impedance and axial ratio (AR) bandwidths. Four rectangle slots backed by a substrate integrated waveguide (SIW) cavity are fed by a sequentially rotated feeding network to realize the circular polarization. Besides, TE 110 and TE 210 modes are excited in the SIW cavity and thus an impedance band from 5.24 to 6.44 GHz (20.6%) and an AR band of 5.29 to 6.19 GHz (15.7%) are realized. The antenna also has some other advantages, such as compact size, low profile, and easy integration with other planar circuits, which make it has the potential for some wireless systems.