1
Larry R Lockwood: Electronic filter devices. Tektronix, John Smith Hill, May 22, 1984: US04450422 (1 worldwide citation)

An electronic filter device comprises a high frequency section and a low frequency section. The high frequency section has an input coupling loop connected to an input connection of the filter device, and a gyromagnetic resonance element. The low frequency section comprises at least one inductor and ...


2
Lockwood Larry R: Electronic filter devices. Tektronix, August 29, 1985: GB2154069-A

A filter for use in a frequency analyser comprises a high frequency section and a low frequency section. The high frequency section has an input coupling loop 18 connected to an input connection 10 of the filter, and a gyromagnetic resonance element 14. The low frequency section comprises at least o ...