High Speed Low Loss Dielectric Tape Wrapping
Expanded PTFE Tape
Dielectric science has enjoyed a long and illustrious history. In addition, this long-standing branch of physics has had close links to chemistry and electrical engineering.
Over 130 years ago, Faraday coined the term ‘dielectric’ to suggest that something analogous to current flow occurs through a capacitor structure during the charging process when current introduced at one plate ‘flows’ through the insulator to charge the other plate.
It is generally accepted that a dielectric material interacts with an electric field differently than free space because the dielectric contains charges that can be displaced. Since nearly all materials contain charges, essentially every material can be broadly classified as a dielectric.
The quest for the industry has over the last 40 years been trying to approach the ultimate goal of 100% velocity of propagation, by introducing air into mechanical structures supporting the copper center conductor.
We take pride in being at the forefront offering solutions to the industry’s challenging signal integrity opportunities and system requirements.
From the early days of the “bamboo” style of cabling to the latest physical gas injection extrusion technologies we now offer the revolutionary ePTFE tape wrap tape and process technology.
Choosing our ePTFE tapes as dielectric materials by applying the tape wrapping individual conductors enables. Lower interference, noise, and cross-talk and signal attenuation. As well as creating more phase stable limiting phase shift to 4.3° and signal attenuation to 0.05 dB at 110 GHz.
Additionally, ePTFE tape wrapped dielectric and insulation systems can be up to 50% thinner than other materials, increasing I/O packaging.
The expanded polymer appears under atomic force microscopy as a network of densely coiled nodes connected by fibrils.
Controlling the expansion temperature, force, rate and direction allow us to dictate many microstructural attributes of ePTFE, including the network’s openness, density of the fibrils and distance between nodes. Each microstructural configuration, combined with the final product performance, provides us the ePTFE products unique characteristics.
Every good signal integrity high speed transmission line whether its single ended or differential is limited in the ability to maintain tight control of the Ke (dielectric constant) in:
- Homogenous cell size in the dielectric
- Even dispersion of cells throughout the entire length of the cable
Over the last decade people and companies have been using the term innovation freely as a buzzword without truly understanding the meaning or the actions of innovation. In Vadd we do not use the word lightly, we define innovation as significant positive change, this is setting the bar high and it should be.
What does significant mean? Cable technologies have experienced tremendous significant positive changes over the last 30 years, motivating us all in Vadd to continue the path in achieving excellence in everything we do.
Responding to the customer’s critical challenges in cable systems or interconnect applications deserves a qualified and professional response providing a solution set that meets the objective with reasonable economics.
With the largest and broadest cable technologies of any cable company, Vadd have the capabilities from material science, resin and compounds, with a response to almost any complex application needing cable or a cable system.