US 8,411,763 B2 · Cable reduction

Abstract

The present invention provides combining and separation circuitry, which allows multiple signals in different frequency bands to travel in either direction over a single cable and be combined and separated as desired. In one embodiment, the combining and separation circuitry includes first, second, third, and fourth ports. The first port is configured to send or receive signals in a first frequency band, the second port is configured to send or receive signals in a second frequency band, and the third port is configured to send or receive DC signals, baseband signals, or a combination thereof. The fourth port is configured to be coupled to a cable in which the signals in the first and second frequency bands, as well as the DC and/or baseband signals, can be sent in either direction.

Claims20

Dependent claims

A method of combining signals on a common cable, comprising:

transmitting a first signal at a first frequency in a first frequency band in a first direction between first and fourth ports of circuitry having first, second, third, and fourth ports;
transmitting a second signal at a second frequency in the first frequency band in a second direction between the first and fourth ports, the second direction being opposite to the first direction;
transmitting a third signal at a third frequency in a second frequency band in a third direction between the second and fourth ports;
transmitting a fourth signal at a fourth frequency in the second frequency band in a fourth direction between the second and fourth ports, the fourth direction being opposite to the third direction;
and
transmitting an additional signal between the third and fourth ports.

3 more elements

Dependencies are inferred from the claim text.

Cable reduction

Life of this patent

Cable reduction

Life of this patent

Abstract

Claims20