Two-dimensional (planar) TDMA/broadcast microwave switch matrix

Details Two-dimensional (planar) TDMA/broadcast microwave switch matrix Two-dimensional (planar) TDMA/broadcast microwave switch matrix

1978-08-31

1981-03-03

Gensler, Paul L.

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333116, 333164, H01P 115

Patent

active

042543851

ABSTRACT:
A planar microwave switch matrix is composed of three-state phase shifter switches, a planar crossover and switchable 3-dB attenuators. The three-state phase shifter switches are each composed of two planar 3-dB quadrature hybrid couplers interconnected by two switchable phase shifters. The phase shifters are both switchable between zero phase delay and a predetermined phase delay, but the predetermined phase delay is different for each phase shifter. The planar crossover is composed of two cascaded 3-dB quadrature hybrid couplers. The construction of all components of the switch matrix is readily implemented using microwave integrated circuit (MIC) technology. The switch matrix is intended for use in switched satellite time division multiple access (SS-TDMA) systems but can be remotely configured for broadcast applications.

REFERENCES:
patent: 3559108 (1971-01-01), Seidel
patent: 3931599 (1976-01-01), Salzberg
patent: 3967220 (1976-06-01), Tagashira et al.
patent: 3996533 (1976-12-01), Lee

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