Admin: Created page with " For related information on the subject, see also our articles on common mode interference and impedance matching. ===Baluns=== The balun is a device (often a tra..."

2016-12-15T03:09:58Z

Created page with " For related information on the subject, see also our articles on common mode interference and impedance matching. ===Baluns=== The balun is a device (often a tra..."

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For related information on the subject, see also our articles on [[common mode interference]] and [[impedance matching]].

===Baluns===

The balun is a device (often a transformer) that can:

* match a balanced antenna (dipole) to an unbalanced feedline (coax)

* match an unbalanced antenna (quarter-wave vertical) to a balanced feedline

* electrically isolate the feedline

* choke common-mode currents (caused by unbalanced antennas)

Although a balun can quench common-mode currents, it doesn't necessarily transform impedances.

Tuned Stub

Folded Balun

[[File:Pawsey-stub.jpg|thumb|none|250px|Pawsey Stub]]

[[File:Coax-balun.jpg|thumb|none|250px|Coax balun]]

[[File:Split-coax-balun.jpg|thumb|none|250px|Split coax balun]]

Baluns - Revision history

Admin: Created page with " For related information on the subject, see also our articles on common mode interference and impedance matching. ===Baluns=== The balun is a device (often a tra..."