Sheath wave barriers for your antenna!
Energy is transported via coaxial cables in the form of push-pull currents flowing inside the coaxial cable.
Asymmetries, such as an asymmetrical feed line on a symmetrical dipole or an asymmetrically suspended dipole, change the impedance and thus the voltage and current conditions.
Then a high-frequency common-mode current flows over the outside of the cable shielding as a compensating current to ground.
A high-frequency common-mode current then flows over the outside of the cable shielding as a compensating current to ground.
Such currents lead to sheath waves and thus to wave detachment, i.e., radiation of RF energy and reception of interference signals.
The outside of the cable shield then radiates energy and acts like a grounded antenna wire connected to one arm of the antenna.
In addition, the current balun prevents the cable outer sheath from acting as an antenna for receiving interference by increasing its impedance.
Attenuation of the interference signals by about 2 S-levels is possible.
A component that allows push-pull currents to flow unhindered and effectively suppresses common-mode currents is the current balun.
The KAABS160 is a broadband blocking element in the form of a ferrite cable absorber.
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Technical specifications
- Frequency range: 3 MHz bis 50 MHz
- Damping: 20 dB corresponds to an impedance of approx. 1000 Ω
- Connection: One side UHF male (plug) - other side UHF female (cable socket)
- Resilience: 200 W CW
- Weight: 0,14 kg
- Lenght: 0,42 m
43,00 EUR
including 19% VAT excluding shipping costs
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