The quadifilar helix antenna are circular polarized omni antenna comprises two bifilar helical loops oriented in mutual orthogonal relationship on a common axis. The quadrifilar helix antennas terminals of each loop are fed in anti-phase and the currents in the two loops are in phase quadrature of these quadrifilar helix antenna. Quadrifilar helix antennas are high suitable as base station antenna for Ground To Air communication application without having the requirement of multiple antennas.

Antenna Experts manufactured circular polarized high gain high power quadrifilar helix antenna with RHCP & LHCP circular polarization quadrifilar helix antenna including GPS L1 band quadrifilar helix antenna, GPS L2 band quadrifilar helix antenna, GPS L3 band quadrifilar helix antenna, GPS L4 band quadrifilar helix antenna, GPS L5 band quadrifilar helix antenna, GPS L6 band quadrifilar helix antenna and all GPS band quadrifilar helix antenna, weather station satellite quadrifilar helix antenna quadrifilar helix MIMO antenna, drone jammer quadrifilar helix antenna.

Antenna Experts also manufactured IRIDIUM band quadrifilar helix antenna, GLONASS band quadrifilar helix antenna, and INMARSAT bands quadrifilar helix antenna 800MHz quadrifilar helix antenna, 850MHz quadrifilar helix antenna, 900MHz quadrifilar helix antenna, 950MHz quadrifilar helix antenna, 450MHz quadrifilar helix antenna, 400MHz quadrifilar helix antenna, 2400MHz quadrifilar helix antenna, 5800MHz quadrifilar helix antenna 4400-6000MHz quadrifilar helix antenna 1100-1700MHz quadrifilar helix antenna 1200-1600MHz quadrifilar helix antenna 370-500MHz quadrifilar helix antenna 400-550MHz quadrifilar helix antenna 4.9-5.9GHz quadrifilar helix antenna

These quadrifilar helix antennas are low-profile antennas use Circular Polarization Antenna Technology - which delivers better penetration through obstruction and interference to minimize the effects of multipath interference. These commercial grade antenna provides superior performance as compare to significantly larger and more expensive products.

QHA Series quadifilar helix antennas available in both circular polarization sense LHCP or RHCP with multiple choice of mounting hardware be it for mast mounting for base station applicable or be it for civilian vehicular mounting application or be it for NATO 4 holes military vehicular mounting application or be it for man-pack application. Other type of mounting hardware / configuration can be supplied on request with these quadrifilar helix antenna.

Quadrifilar helix antennas are highly suitable for weather satellite communication, telemetry application, Earth Observation Missions, Space Science Missions, Global Navigation Satellite System GLONASS, L band GPS application including GPS L1, GPS L2 & GPS L5 band without having the requirement of multiple antennas. Quadrifilar Helix Antennas RHCP omni or Quadrifilar Helix Antennas LHCP omni antenna termination fitted at bottom of mounting flange for complete weather protection.

The RHCP omni quarifilar helix antenna or LHCP omni quadrifilar helix antennas are consisting of two pairs vertical loop radiating elements at right angles to each other, twisted into helix turns vertically and enclosed in ABS radome. The special “Teflon Dielectric Transmission Line” technique is used in quadrifilar helix antennas to handle high power handling capacity allowing smooth VSWR and good gain over the specified frequency band.

The UV resistant ABS enclosure has excellent transparency for RF signals and enough strength to withstand specified wind loads of these quadrifilar helix antennas. The stainless steel mounting hardware is supplied with the quadrifilar helix antenna. Cylindrical shell/enclosure is used for low wind loading and for minimal effect of ice formation on the quadrifilar helix antenna operation as well as providing an aesthetically pleasing appearance.

QHA-1117 broadband hemi omni-directional LHCP omnidirectional quadrifilar helix or RHCP omnidirectional quadrifilar helix antenna is rugged all weather model, enclosed in a ABS radome, uses high class copper alloy and does not require any field tuning or adjustments. The compact size of LHCP or RHCP omni-directional quadrifilar helix antenna allows easy handling, shipping and highly suitable for receiving, transmitting, scanning, monitoring, surveillance and jamming applications for GPS L1, GPS L2, GPS L3, GPS L4, GPS L5, GPS L6, IRIDIUM, GLONASS, and INMARSAT bands without having the requirement of multiple antennas. The quadrifilar helix antenna is also highly suitable for Ground to Air communication/jamming application due to its wide elevation beamwidth with omni-directional properties. Quadrifilar helix antenna termination fitted just below the NATO mounting flange for complete weather protection. Other type of mounting hardware / configuration can be supplied on request.

QHA-1726 broadband omni-directional LHCP omni quadrifilar helix antenna or RHCP omni quadrifilar helix antenna is designed to cover the entire 1700-2600MHz, and rugged all weather model, enclosed in a ABS radome, uses high class copper alloy and does not require any field tuning or adjustments. The compact size of LHCP or RHCP omni-directional quadrifilar helix antenna allows easy handling, shipping and highly suitable for receiving, transmitting, scanning, monitoring, surveillance and jamming applications without having the requirement of multiple antennas. The antenna is also highly suitable for Ground to Air communication/jamming application due to its wide elevation beamwidth with omni-directional properties. Antenna termination fitted just below the NATO mounting flange for complete weather protection. Other type of mounting hardware / configuration can be supplied on request.