Antenna Experts an ISO 9001:2008 Quality Management Systems (QMS) certified company manufactures Antennas System for SIGINT, EW, UAV, SCADA, TETRA, CNI, ATC, SATCOM, DME, RCIED Jamming, Surveillance, Broadcast, Radio Relay, Energy, Oil Field, Smart Grid and Agriculture applications World Highest Performance Wideband Antennas for 100% Connectivity & Reliability Our portfolio includes dual polarized log periodic antenna, ultra wide band coaxial dipole, multi band antenna, aviation band antenna, fiberglass collinear antenna, HF broadband multi wire antenna, defense antenna, tactical radio relay antenna, HF broadband vertical conical monopole, marine band antenna, shipboard antenna, HF broadband dipole antenna, FM band antenna, ultra wide band discone antenna, terrestrial microwave antenna, DME antenna, transponder antenna, grid parabolic antenna, stacked dipole array, log periodic dipole array, directional yagi antenna, satellite tracking earth station antenna, jammer antenna, side mount dipole, LHCP RHCP helical antenna, circular polarized antenna, spiral antenna, dual stacked array, quad stacked array, broadband ground plane antenna and wide band vehicle mount antenna
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Home » Antennas » Quadrifilar Helix Antenna

Quadrifilar Helix Antenna
Quadrifilar Helix Antenna

 # Model Frequency Bandwidth Gain Download ENQ
1. QHA-1113 1100-1300 MHz 1.1 - 1.3 GHz 2 dBic
2. QHA-1117 1100-1700 MHz 1100-1700MHz 2 dBic
3. QHA-1216 1200-1600MHz 1.2 - 1.6 GHz 2 dBi
4. QHA-1314 1300-1400 MHz 1.3 - 1.4 GHz 2dBi
5. QHA-150 135-175MHz 5MHz 3 dBic
6. QHA-1417 1400-1700 MHz 1.4 - 1.7 GHz 2 dBic
7. QHA-1516 1500-1620 MHz 1.50 - 1.62 Ghz 2 dBic
8. QHA-1720 1700-2000 MHz 1.7 - 2.0 GHz 2 dBic
9. QHA-2023 2000-2300 MHz 2.0 - 2.3 GHz 2 dBic
10. QHA-2326 2300-2600 MHz 2.3 - 2.6 GHz 2 dBic
11. QHA-2630 2600-3000 MHz 2.6 - 3.0 GHz 2 dBic
12. QHA-3040 3000-4000MHz 3.0 - 4.0 GHz 2 dBic
13. QHA-350 300-400MHz 20 MHz 3 dBic
14. QHA-4050 4000-5000MHz 4.0 - 5.0 GHz 2 dBic
15. QHA-450 400-512MHz 20 MHz 3 dBic
16. QHA-4854 4800-5400 MHz 4.8 - 5.4 GHz 2 dBic
17. QHA-5060 5000-6000 MHz 5.0 - 6.0 GHz 2 dBic
18. QHA-5458 5400-5800 MHz 5.4 - 5.8 GHz 2 dBic
19. QHA-850 700-1000MHz 100MHz 3 dBic

QHA Series broadband omni-directional RHCP or LHCP quadrifilar helix antennas are 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.

The QHA 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.

QHA Series RHCP omni or LHCP omni antennas are high suitable as base station antenna for Ground To Air communication application without having the requirement of multiple antennas.

These QHA low-profile antennas use Circular Polarization Antenna Technology - which delivers better penetration through obstruction and interference to minimize the effects of multipath interference. Thease 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.

QHA Series 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 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 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. The stainless steel mounting hardware is supplied with the 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.


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