Open AccessHigh gain SIW cavity backed differential slot antenna for X‐band applications
Author(s) -
Srivastava G.,
Mohan A.
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2018.6390
Subject(s) - antenna gain , slot antenna , microstrip antenna , antenna (radio) , bandwidth (computing) , optics , materials science , physics , optoelectronics , antenna factor , electrical engineering , telecommunications , engineering
A new differential substrate integrated waveguide (SIW) antenna with good common‐mode (CM) suppression and high gain is presented. The designed antenna uses an H‐shaped slot backed by SIW cavity and is differentially excited by two microstrip feedlines from two opposite sides of the cavity. The measured differential impedance bandwidth of the proposed antenna is 10.19–11.03 GHz with CM suppression below 2 dB. The designed differential antenna exhibits a high gain of 8.7 dBi with a good front‐to‐back ratio of 21 dB.