Asymmetric coupling method for attenuating upstream and downstre

Details Asymmetric coupling method for attenuating upstream and downstre Asymmetric coupling method for attenuating upstream and downstre

1996-08-26

1998-08-25

Hsia, Sherrie

Telecommunications

Interference signal transmission

348 12, 348 13, H04H 100, H04N 7173

Patent

active

057992398

ABSTRACT:
Downstream and upstream signals in a transmission system are attenuated by different amounts to allow upstream signals to be originated at individual subscribers (22--22, 30--30) at the same level yet be received at a common upstream amplifier (19b) at substantially the same level. Different attenuation of downstream and upstream signals is achieved by the combination of a pair of directional couplers (110a and 110b) and a diplex filter (132). The couplers and diplex filter collectively separate a downstream signal destined for the subscriber from an upstream signal generated by the subscriber. The upstream signal which is separated may be attenuated by a matching loss element (138) to attenuate the upstream signal by an amount greater or less than the downstream signal.

REFERENCES:
patent: 4920533 (1990-04-01), Dufresne

Affiliated with

Also associated with

Rating

Asymmetric coupling method for attenuating upstream and downstre does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Asymmetric coupling method for attenuating upstream and downstre, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Asymmetric coupling method for attenuating upstream and downstre will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-46316