Questions tagged [propagation]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
3
votes
3answers
2k views

How do signal reflections work?

How do reflections work, physically to the charge carriers level? Considering a square wave generator connected to a long, open cable, I've made a quick chronological diagram of the propagation of ...
4
votes
6answers
2k views

Why does more bandwidth guarantee high bit rate?

The definition of bandwidth is frequency range and it seems to be correct to say that higher bandwidth guarantees higher data rate. However, i do not understand why it does. Data rate depends on ...
7
votes
2answers
2k views

Why do EM waves with longer wavelengths propagate longer distances?

AM radio signals use carrier waves which are quite longer than in FM case. We know that in free space both high and low freq. RF signals should take the same distance in same period of time. There ...
8
votes
4answers
2k views

Are there types of standard coaxial cable with a propagation velocity of 0.9c? What would be the application?

Reading this answer I was surprised to hear that there are "excellent" kinds of coaxial cable with a propagation speed of 0.9c; 90% the speed of light. The bargain basement number is about 2/3c, and ...
0
votes
1answer
233 views

Propgation delay

I want to compare performance of 4-bit full adder vs sequantial (serial ) adder with one D flip flop .. The two models are in the followig figures Combinational adder: Serial adder: Lets say in ...