R&S ENV4200
Preparing for Use
User Manual 1107.2470.12 - 03
E-19
A sheath current choke for the coaxial cable can be implemented as shown in
The figure illustrates the attenuation of an absorber with the following material:
Core material:
N30; Al = 5400 nH
Dimensions: Toroidal core 58 mm x 40 mm x 17 mm
EPCOS order no:
B64290-A40-X830
Number of turns: 20 (RF cable)
Fig. 7
Attenuation of sheath current choke measured in 150 Ω test setup
An attenuation of 20 dB means that the effective impedance of the sheath current
choke is approx. 1500
.