These antennas are designed for use in demanding telecommunications and navigation applications, including autonomous vehicles, drone delivery platforms, and personal body-worn devices. They are physically smaller than conventional antennas, more effective in challenging user scenarios, and offer many technical advantages. Helix's Dielectric-loaded Multi-filar Antennas (DMAs) for GNSS applications enable 10cm dynamic accuracy, making them ideal for safety-critical applications such as driverless cars and aerospace. The antennas are also immune to multi-path effects, interference, jamming, and electrostatic discharge, making them suitable for rugged applications in military, aerospace, and automotive products.