October 2012
Intermediate to advanced
860 pages
23h 37m
English
Content preview from RF Circuit Design, 2nd Edition
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Chapter 8: Equipotentiality and Current Coupling on the Ground Surface
8.1 Equipotentiality on the Ground Surface
8.1.1 Equipotentiality on the Grounded Surface of an RF Cable
Let us start our discussion of the equipotentiality on grounded surface of a regular RF cable. Simply speaking, a regular RF cable is a conductive wire encircled by a conductive cylinder (Fig. 8.1). The outer cylinder at the two ends is usually connected as the ground terminal.
Figure 8.1 Regular RF cable.
In the RF range, the following questions must be answered:
- Are the ground points on the outside cylinder Ga and Gb equipotential? Is
8.1
- Are the ground points of an RF cable at two ends, G1 and G2, equipotential? Is
8.2
In the DC or low-frequency range, these points are, approximately, equipotential.
8.3 
In the RF range, they are in most cases not equipotential, that is,
8.4 
8.5 
unless the distances between ...
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