Graded index substrate integrated waveguide based directional coupler Conference Paper

abstract

• A novel graded index (GRIN) based substrate integrated waveguide (SIW) directional coupler is proposed for bandwidth enhancement. The suppression of higher order modes in the coupling region of the directional coupler is achieved by reduction in the permittivity in the coupling region by the utilization of GRIN substrate. An enhancement in the fractional bandwidth of 7% is achieved by proposed directional coupler based on GRIN SIW substrate as compared to the conventional SIW based coupler. The proposed coupler prototype bandwidth is 49% (8.5 GHz14GHz).

name of conference

• 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting

authors

• Karim, Muhammad Faeyz

published proceedings

• 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting

author list (cited authors)

• K. T. Chandrasekaran, .., A. Alphones, .., M. F. Karim, .., & Nasimuddin.

publication date

• 2017

published in

• 2008 IEEE Antennas and Propagation Society International Symposium  Journal

start page

• 2255

end page

• 2256