Analysis of Loaded Substrate Integrated Waveguides and Attenuators

Ruo Feng Xu, A. J. Farrall, P. R. Young
2014 IEEE Microwave and Wireless Components Letters  
This letter provides an approximate analysis of a slotted substrate integrated waveguide with periodic loading elements using the transverse resonance technique. The technique is used to design a travelling wave attenuator whereby pin diodes are capacitively coupled to the waveguide slot. By changing the bias, and therefore loading resistance, a very constant, variable attenuation is produced over the waveguide band.
doi:10.1109/lmwc.2013.2288180 fatcat:vox36xhdjzdkbj2qdwvcpbmq5a