  The paper presents a reflectionless stripline filter with reduced dimensions
having a single bandwidth over a wide frequency range. The filter consists of
coupled strip lines and RLC circuits included in the diagonal ports of the
coupled strip lines. Calculations and measurements of the reflectionless
stripline filter layout in the frequency range up to 4.8 GHz have been carried
out. The obtained results show that the dimensions are reduced by a factor of
two compared to previously developed reflectionless stripline filter designs.
It is achieved by folding the coupled lines in the form of a meander formed by
horizontally and vertically arranged conductors on horizontally and vertically
oriented dielectric substrates. The proposed reflectionless stripline filter
allows to solve the problem of improving the mass-dimensional parameters of the
equipment and to provide signal selection with minimum reflection at
out-of-band frequencies. It can be in demand in multichannel systems of
wireless communications, radar, and measurements.
