An electronic device for connecting a balanced transmission line to an unbalanced one.
2001, Rick Sturdivant, Balun Design for Wireless: Mixers, Amplifiers and Antennas, in Practical Filters and Couplers, Noble Publishing Corporation, page 25,
Baluns find wide use in mixer, antenna and balanced amplifier circuits. Yet balun design is still regarded as if it were black magic by many engineers partly due to the fact that practical design information on baluns can be difficult to find.
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