Mario Pérez-Escribano, J. Sánchez-Martínez, E. Márquez-Segura
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Small Size Dual-Band Bandpass Filters with Multiconductor Transmission Lines and Shunt Open Stubs
A dual-band bandpass filter consisting of multiconductor transmission lines (MTL) and shunt stubs has been designed. The used topology, based on the interconnection of two identical MTL and a shunt open stub, has a frequency response that can be modelled by using the generalized Chebyshev functions. A prototype of a 4 fingers-MTL is manufactured and measured and a good agreement between analytical and measured results is obtained. Furthermore, it is easy to get a design criterion that enables getting good responses varying just a few parameters.