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BALUN BASICS PRIMER - Marki Microwave

BALUN BASICS PRIMERA Tutorial on Baluns, BALUN Transformers, Magic-Ts, and 180 HybridsBy: Doug Jorgesen and Christopher Marki 2014 Marki Microwave , Inc. | 215 Vineyard Court | Morgan Hill, CA 95037P | F | BALUN has a long and illustrious history, first documented in the literature as a device to feed the television transmitting antenna for the Empire State Building1 in 1939. Since then designs have evolved dramatically, and applications have evolved beyond driving differential antennas to include balanced mixers, amplifiers, and signaling lines of all types. Baluns have long been ubiquitous in low frequency audio, video, and antenna driving applications. The need for high speed, low noise data transfer has driven the advancement of the BALUN to higher frequencies and superior performance.

- In time domain this means the voltage of one balanced output is the negative of the other balanced output. • The unbalanced input is matched to the input transmission line impedance (usually 50 Ω). • Unlike an isolator or circulator, a balun is …

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