Multi-hole waveguide coupler is extension of single-hole coupler, designed to increase the operational bandwidth. The performance is based on size of the coupling holes and distance between them, since it is important to achieve wave amplification in the through-direction and cancellation in the opposite…
Multi-Hole Waveguide Coupler
Microstrip Band Pass Filters
This application note presents S-parameters obtained with effective usage of WIPL-D Fitter, number of unknowns, computer memory required and simulation time per frequency obtained after simulation of two passive, microstrip, band pass filters. The first simulated filter is interdigital, while the second one is…
Trees, Foliage and Complex Sceneries
Scattering of EM waves from trees and foliage as well as the propagation of EM waves in the presence of forests plays an important role in many civil and military applications (such as Foliage Penetrating Radar for detecting potential targets in the…
Frequency Selective Surface
There is a growing demand for new materials to enhance device performances at low cost. For several years, many periodicals there have been published (built from large number of uniform cells) which show that such engineering issues can be resolved. Numerous cases demonstrate…
RF Propagation in Mining Tunnels
Due to inherent higher order basis functions, efficient parallelization on multi core CPUs and support for simulations on GPU platforms, WIPL-D software can be effectively used for radio frequency propagation problems. One such problem would be determining power transfer between transmitter and receiver antennas…
Antenna Placement on Electrically Large Platforms
WIPL-D Pro is a frequency-domain MoM based code which enables very accurate EM simulation of arbitrary 3D structures. MoM demands far less memory and time resources for open region problems on PC computers or inexpensive workstations. The WIPL-D suite offers…





