VSWR and Antenna Tuners
VSWR and Antenna Tuners
VSWR and Antenna Tuners
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<strong>VSWR</strong> <strong>and</strong> <strong>Antenna</strong> <strong>Tuners</strong><br />
• In coaxial or open-wire line, current flowing in each of the two<br />
conductors travel in opposite directions.<br />
• If the physical spacing between the two parallel conductors in an<br />
open-wire line is small in terms of wavelength, the phase difference<br />
between the currents will be very close to 180°.<br />
• If the two currents also have equal amplitudes, the field generated<br />
by each conductor will cancel that generated by the other, <strong>and</strong> the<br />
line will not radiate energy, even if it is many wavelengths long.<br />
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