Dual mode diplexer/multiplexer

Details Dual mode diplexer/multiplexer Dual mode diplexer/multiplexer

1990-09-26

1992-10-13

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

H04B 118, H04B 148

Patent

active

051557240

ABSTRACT:
A broadband diplexer for use in dividing input signals in accordance with frequency and in constructing multiplexers including multiple diplexers. The diplexer includes a pair of 0-degree couplers one of which is configured as a signal splitter while the other is configured as a signal combiner. A pair of filters having identical frequency selection characteristics but opposite impedance and admittance characteristics are connected in between the splitter and the output port of the combiner. In operation, input signals are received at the input port to the splitter and output signals are provided at the isolation port of the splitter and the output port of the combiner. The coupler and filters act in combination to divide the input signals in accordance with frequency so that the output signals have complementary spectra. The use of 0-degree couplers allows for very broadband performance by the diplexer.

REFERENCES:
patent: 4240155 (1980-12-01), Vaughan
Hoffman, M. "Microwave Diplexer", Electrical Communication, vol. 45, No. 4, pp. 358-362, 1970.

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