Open AccessSuppressed back‐lobe substrate‐integrated waveguide slot array antenna for X‐band
Author(s) -
Karami M.,
Sadeghzadeh R.A.,
Noferesti M.,
Chegeni M.
Publication year - 2015
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.2015.0604
Subject(s) - choke , planar , bandwidth (computing) , microstrip , materials science , microstrip antenna , side lobe , slot antenna , radiation pattern , optoelectronics , optics , waveguide , planar array , antenna (radio) , electrical engineering , physics , telecommunications , computer science , engineering , computer graphics (images)
Utilising an array that is constructed by combining short‐ended stubs and microstrip lines, a planar‐choke structure is presented. By locating the proposed chock structure on the bottom of the substrate‐integrated waveguide slot array antenna, undesired spillover current and edge diffractions are removed. Measurement result show that in the operational bandwidth the backward radiation is reduced by more than 20 dB and the side‐lobe level is improved by 5 dB without degrading of the antenna's electrical performance.