Title :
A Dissipative Coaxial RFI Filter
Author_Institution :
Paradynamics, Incorporated, Long Island, N. Y.
Abstract :
A lossy coaxial filter has been developed to protect electroexplosive devices from accidental detonation by stray high-power RF fields. The characteristics of a coaxial transmission line, filled with dielectromagnetic material, are analyzed in terms of various proposed filter configurations. The design concept for the prototype filter is chosen so as to provide a maximum stop-band attenuation. Measured results are presented to show that the filter provides an insertion loss of about 90 db from 5 Mc to at least 10 kMc. Furthermore, it is shown that the use of a lossy filter guarantees a minimum value of insertion loss regardless of the terminating impedances.
Keywords :
Attenuation; Coaxial components; Filters; Insertion loss; Loss measurement; Protection; Prototypes; Radio frequency; Radiofrequency interference; Transmission line measurements;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
DOI :
10.1109/TEMC.1964.4307330