Quadrifilar Helix Antenna is one of the categories of helix antenna where few or more conducting wires are attached in the shape of a helix. The best part about this antenna is that it is resistant to all kinds of interference. Quadrifilar Helix Antenna makes it more efficient for GPS navigation, satellite communication and radio frequency detection etc. Link: https://www.antennaexperts.co/....category/quadrifilar
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