'Institute of Electrical and Electronics Engineers (IEEE)'
Doi
Abstract
In this letter, an empty substrate integrated waveguide
H-plane sectorial horn antenna is presented. The antenna
is integrated within a planar substrate and is fed by means of a
microstrip transmission line. It is composed of a partially empty
substrate layer stacked between two cover metallic plates. Results
obtained for a prototipe designed and fabricated at Ku-band
show a measured efficiency close to 90% and matched responses.
No extra loading elements are needed in order to reduce reflection
at the end of the aperture conversely to previous designs.
Moreover, the structure is quite simple, cheap and does not
depend on substrate characteristics i.e. dielectric permitivity or
loss tangent. This new methodology for manufacturing substrate
integrated antennas without dielectric considerably improves the
performance of conventional substrate integrated horn antennas