Modular contiguous output multiplexer

Details Modular contiguous output multiplexer Modular contiguous output multiplexer

1996-02-28

1997-02-18

Gensler, Paul

Multiplex communications

Diplex

333132, 333135, 370497, H04J 100

Patent

active

056047479

ABSTRACT:
A modular, multi-channel, contiguous output, multiplexer which combines directional filters with the diplexed output of two multi-channel multiplexers, each covering a contiguous frequency band, i.e., one is a low multiplexer and the other a high multiplexer, and one or more quasi-elliptical directional filters after the diplexer output to cover the hole left by the diplexer crossover. A preferred embodiment may essentially consist of: 1) a 12 channel contiguous multiplexer, either a hybrid directional and manifold type multiplexer or a short circuited multiplexer, covering frequencies, e.g., in the range from 3.7 GHz to 4.2 GHz; 2) a 6 channel contiguous multiplexer spanning frequencies substantially in the range from 3.42 GHz to 3.62 GHz; 3) a diplexer including a 6 section Chebyshev filter, with a passband of frequencies, e.g., in the range of 3.4 to 3.620 GHz, and about 30 dB attenuation at 3.7 GHz, and an 8 section Chebyshev filter passing frequencies, e.g., in the range of 3.7 GHz to 4.2 GHz, and providing 30 dB attenuation at 3.62 GHz; and 4) a spur free directional filter including a pair of quasi-elliptical filters that fill the crossover band without any effect on the previous components.

REFERENCES:
patent: 4780694 (1988-10-01), Kich et al.
patent: 5438572 (1995-08-01), Rauscher
patent: 5440281 (1995-08-01), Wey et al.

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