Open AccessDesign of SIW cavity‐backed self‐triplexing antenna
Author(s) -
Kumar A.,
Raghavan S.
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2017.4775
Subject(s) - microstrip , resonator , dielectric resonator antenna , materials science , waveguide , excited state , microstrip antenna , planar , optoelectronics , patch antenna , antenna (radio) , feed line , optics , substrate (aquarium) , electrical engineering , physics , engineering , computer science , atomic physics , oceanography , computer graphics (images) , geology
A novel substrate integrated waveguide (SIW) cavity‐backed self‐triplexing slot antenna, consisting of a hybrid SIW cavity resonator is proposed for tri‐frequency operation. The hybrid cavity resonator is an amalgamation of a half‐mode circular and half‐mode rectangular SIW cavity resonator. A radiating slot is etched on its top surface, which produces three distinct resonant frequencies (5.57, 7.17 and 7.65 GHz) when it is excited by three microstrip lines. The lower band around 5.57 GHz is achieved due to a half‐mode circular cavity resonator, when the corresponding microstrip line is excited. On the other hand, remaining two bands around 7.17 and 7.65 GHz are achieved due to half‐mode rectangular cavity resonator when excited by the corresponding microstrip lines. The experimental isolation level between any two feed lines is better than 20 dB, which helps to introduce the self‐triplexing phenomenon. Moreover, the proposed design is realised on a single‐layered copper‐laminated dielectric substrate, maintaining planar configuration.