Effective broad-band filtering for interference elimination in the frequency range from 10 MC to 10,000 MC

This is a condensed tutorial paper pertaining to ceramic low-pass filter elements (and their mounting) for effective RFI elimination at very high frequencies. At these frequencies, conventional tubular feedthrough capacitors are rather useless because of detrimental dimensional resonances. Such resonances are suppressed in discoidal, cross-slotted (transversal slots in outer electrode), and cascaded (in combination with ferrites) filter elements. The main characteristics of all three types are compared.