Optimizing High-Rejection LTCC Filter Performance in Co-Planar Waveguide Implementations

This paper explores the implementation of Mini-Circuits’ BFHK-series high-rejection LTCC filters in a coplanar waveguide (CPW) environment using a novel interposer board and related effects on filter rejection. Real test data from a leading customer’s evaluation of these filters in a channelized housing is presented demonstrating comparable rejection performance to that of stripline implementations in the range of 70 to 90 dB.

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Mini Circuits

Filtering Solutions for 5G C-Band Interference with Radar Altimeter Receivers

Recent debate about potential interference between 5G network equipment operating in C-band frequencies and radar altimeter (RA) receivers onboard commercial aircraft has highlighted the need for high-Q filtering solutions in crowded spectral environments. This paper presents two Mini-Circuits filters fabricated using ceramic resonator and cavity technologies designed specifically to eliminate interference by 5G C-Band emissions when incorporated either within or in line with the RA assembly.

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