Antenna Experts manufacturer & exporter of military grade quadrifilar helix antennas. We also known in international market for the supply of world highest power rating quadrifilar helix antenna. The quadifilar helix antenna are circular polarized omni antenna comprises two bifilar helical loops oriented in mutual orthogonal relationship on a common axis. The 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 antenna are broad band omni-directional circular polarized antenna which offered a very wide elevation beamwidth which is highly suitable for GPS UAV Drone communication/jamming application.   Quadrifilar helix antennas, 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 RHCP omni or LHCP omni-directional quadrifilar helix antenna allows easy handling, shipping and highly suitable for receiving, transmitting, scanning, monitoring, surveillance and jamming applications.

Military Grade Quadrifilar Helix Antennas are high suitable as base station antenna for Ground To Air communication application without having the requirement of multiple antennas. All of our QHA series antennas are highly suitable for UAV ground control center antenna, anti drone ground station antenna and all band GPS jamming application. QHA antenna are available with RHCP or LHCP option.

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 military 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.

Our QHA-150 VHF quarifilar helix antenna cover the frequency range of 135-175MHz is highly suitable for weather satellite communication application. Our QHA-450 quadrifilar helix antenna has frequency range of 400-512MHz band. Both VHF UHF quadrifilar helix antenna are designed and supplied as per MIL-STD-810G standards and are availabe in both RHCP and LHCP polarization sense. 

The FTS-370-500-QH is a broad band circular polarized omni-directional UHF quadrifilar helix antenna cover the entire frequency band of 370-500MHz band which is designed specifically for use as a command destruct antenna used in flight termination systems. It provides hemispherical coverage above the horizon while minimizing its negative angle radiation.

FTS-370-500-QH UHF quadrifilar helix antenna broadband circular polarized horizontal omni-directional antenna is rugged all weather model, enclosed in a fiber glass radome, uses high class copper alloy and does not require any field tuning or adjustments. All UHF QHA antenna are supplied with radome made of fiber glass which offer good RF transparency to the RF signals.

The military grade 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. RHCP omni or LHCP omni antenna termination fitted at bottom of mounting flange for complete weather protection.

The RHCP or LHCP omnidirectional quarifilar helix antenna design 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 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 antenna. 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 antenna operation as well as providing an aesthetically pleasing appearance.

QHA-1117 broadband omni-directional LHCP omni quadrifilar helix or RHCP omni 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 QHA-1117 1100-1700MHz quarifilar helix antenna is also highly suitable for Ground to Air communication/jamming application due to its very 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.

QHA-1726 broadband omni-directional LHCP omni quadrifilar helix 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.