Premium
Tunable slot antenna backed by substrate integrated waveguide cavity
Author(s) -
Sboui Fakher,
Machac Jan,
Gharsallah Ali
Publication year - 2018
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.21591
Subject(s) - antenna (radio) , slot antenna , coplanar waveguide , anechoic chamber , varicap , optoelectronics , antenna measurement , coaxial antenna , antenna efficiency , antenna factor , materials science , biasing , electrical engineering , radiation pattern , diode , optics , acoustics , voltage , physics , computer science , telecommunications , engineering , electrode , quantum mechanics , microwave , capacitance
In this article, we present a new frequency reconfigurable SIW cavity antenna feed with a GCPW transmission line. The studied design consists of a slotted cavity backed antenna tuned by the integration of three varactor diodes in the radiating slot. The antenna has a compact size with an overall dimensions of 29.6 × 34.8 × 0.508 mm 3 . By changing the DC biasing voltages of the three diodes, the resonant frequency vary within a wide range of 0.9 GHz while maintaining stable radiation patterns oriented in the broadside direction. Besides, the antenna gain remains greater than 4.5 dBi in the frequency range of agility. The proposed antenna was fabricated and tested in an anechoic chamber and the measured results were well correlated with the simulation. The proposed antenna can offer a significant income for many applications such as the radars and the satellite communications.