Multiplex communications – Wide area network – Packet switching
Patent
1992-03-16
1993-08-03
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
333129, 333132, 333219, H04J 100
Patent
active
052336093
ABSTRACT:
A new class of multiplexing filter structure has both the properties of channelized filtering and channelized linear frequency discrimination. The channelized filter-discriminator is intended for use as part of a microwave receiving system possessing a high probability of intercept for incoming signals. The selective properties of the band pass filters provide an interference-reduction capability while the discriminator property provides for instantaneous frequency measurement. The design procedure for achieving a very high degree of discriminator linearity in association with a reasonable selectivity comparable to a maximally flat filter uses theoretical design data provided in a normalized table generated by computer optimization. A hardware realization of a 64 channel multiplexer-discriminator is described and measured data is presented that agrees very closely with the theoretical predictions.
REFERENCES:
patent: 4706239 (1987-11-01), Ito et al.
patent: 4814727 (1989-03-01), Mower
patent: 4815075 (1989-03-01), Cameron
patent: 4839894 (1989-06-01), Rudish et al.
patent: 4855691 (1987-08-01), Argintaru et al.
Cannon James J.
GTE Government Systems
Olms Douglas W.
Ton Dang
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