June 2014
Intermediate to advanced
176 pages
3h 43m
English
Content preview from Signal Integrity: From High Speed to Radiofrequency Applications
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
4
Propagation on Transmission Lines
The transmission line theory makes it possible to understand and control the evolution of voltage and current along the length of controlled impedance interconnects. It also defines the parameters used, including characteristic impedance, VSWSR and insertion losses, and their relationship with circuit materials.
4.1. Transmission line model
The simplest transmission line is a two-conductor system on which a signal is transmitted. Propagation on a transmission line can always be modeled in the form of a complex series impedance and parallel admittance.
Figure 4.1. Complex model of a transmission line
The values of the elements of these impedances and admittances and their evolution with frequency depend on the propagation modes that can be established in the structure. These modes depend on the geometrical configuration of the conductors as well as on the parameters of the insulating materials. Maxwell electromagnetic equations give the relationships between the impedances Zs and Yp with the electrical and magnetic fields [SAG 06].
4.1.1. Modes of propagation on lines
– Pure transverse electromagnetic (TEM) mode without losses
This mode exists mainly in the following hypothesis: σc = ∞ and tan δd = 0. There is no penetration of the electromagnetic field into the conductors. In this case, the parameters Zs and Ys are given by relationship [4.1]. ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.