There has always been a clear divide between upstream and downstream data splits, making it possible to upgrade signals in the existing network using by-pass filters and diplex filters in the active components. But this separation has become a limiting factor when upgrading the network; each upgrade requires new filters and additional labour. Technetix has now developed a bi-directional amplifier, without the need for diplex filters. This article will explain how to create more bandwidth and flexibility within the same infrastructure and how this technology will make 1.8GHz ESD installations feasible without amplifier respacing.

Designing and maintaining a high-performance Hybrid Fiber Coax (HFC) network is a bit of a dance. You manage your signal strength along the transmission path to avoid two extremes: (1) too high a transmission level and you distort your signals, and (2) too low a transmission level and your weak signal will get lost in the noise.

One of the key features of the new DOCSIS 4.0 specification is expanding our cable plant spectrum from today's 750MHz/860MHz/1GHz to 1.8GHz. This nearly doubles the spectral capacity for much of today's HFC networks.

Demand for bandwidth over the cable network is higher than ever, as domestic and commercial usage increases daily, operators are reporting increases of over 20% in downstream traffic and increases of at least 50% in the upstream in the last few months. 

Technetix recognised the need for flexibility and, as a result, developed the Direction Neutral Amplifier (DNA), an innovative solution for CATV networks with patented flexible split technology. Lab tests have shown that, in combination with a Distributed Gain Architecture (DGA), the DNA will improve network performance and flexibility, while power consumption decreases by 30%.