AH-1117-11
All GPS Band Circular Polarized Helical Antenna
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| AH-1117-11 | All GPS Band Circular Polarized Helical Antenna | 1100-1700MHz | 11 dBic |  |  |  |
Overview: AH-1117-11 High-Gain All-GPS Band Helical Antenna
The AH-1117-11 is a military-grade Circular Polarized Helical Antenna precision-engineered for the 1100–1700 MHz spectrum. Delivering a robust 11 dBic gain in a compact, low-profile form factor, this directional aperture is a premier solution for universal GNSS applications (GPS L1, L2, L5, L6), L-band tactical data links, and high-performance communication in high-interference environments. By utilizing advanced helical winding and Circular Polarization (CP) technology, the AH-1117-11 provides superior signal penetration and multipath rejection, outperforming traditional linear antennas in complex urban theaters and subterranean military tunnels.
Battlefield Durability: Built to survive the most punishing environmental extremes
The AH-1117-11 is encased in a high-tech ruggedized radome made of high-strength ABS and fiberglass, shielding the precision copper radiating elements from physical impact, ice loading, and corrosive atmospheres. Featuring a 6061T6 aluminum alloy reflector and marine-grade stainless steel hardware, the antenna is fully MIL-STD-810G compliant. It maintains structural integrity in winds up to 200 Km/Hr, finished in tactical Olive Green (RAL 6003) for low observability.
Operational Efficiency: Maximum power projection and signal integrity
Efficiency is maximized by securing high-purity enameled copper winding directly to the radome wall, preventing geometry shifts and eliminating internal RF inter-modulation. Its optimized 55-degree horizontal beamwidth and stable 16 dB Front-to-Back ratio ensure that the 150W of RF power is concentrated exactly where it is needed—maximizing link distance for GPS tracking and satellite communication while providing high isolation from rearward interference and background noise.
Detailed Technical Features
- Universal GNSS Mastery: Precision-engineered to cover the entire 1100–1700 MHz frequency window, supporting GPS L1, L2, L5, L6, Galileo, and GLONASS.
- Optimized 11 dBic Gain: Offers a superior gain-to-size ratio, delivering high-intensity signal projection in a compact 470 mm profile.
- Circular Polarization (CP) Superiority: Available in RHCP or LHCP to virtually eliminate Faraday rotation and effectively mitigate signal fading.
- Wide Sector Acquisition: Features a 55-degree Half Power Beamwidth (HPBW), providing a generous acquisition window for tracking mobile assets or satellites.
- High-Power Capacity: Industrial-grade construction facilitates sustained 150 Watts of continuous-duty RF transmission.
- Precision Steering Suite: Supplied with a specialized mounting arrangement for 360° Azimuth and 90° Elevation tracking.
- Advanced Inter-Modulation Protection: Radiating elements are secured to the radome walls to maintain precise electrical geometry under heavy vibration.
- Low VSWR Integrity: Maintains a better than 2.0:1 VSWR across the entire 600 MHz bandwidth for maximum power transfer.
- Zero Field Tuning: Fully factory-calibrated architecture ensures immediate "plug-and-play" tactical deployment.
EW, SIGINT & Monitoring Compatibility
- Electronic Warfare (EW): Acts as a high-intensity directional jammer for the entire GPS/GNSS spectrum. Circular polarization ensures the jamming signal bypasses linear anti-jam filters.
- Signals Intelligence (SIGINT): The clean noise floor and directional gain allow operators to intercept weak, long-range GPS telemetry and rogue tactical emitters with high fidelity.
- Persistent Monitoring: Serves as a high-fidelity electronic "tripwire" for situational awareness in high-reflection environments like military tunnels or maritime corridors.
Key Advantages:
- Total Multipath Immunity: Inherently rejects reflected signals, providing a stable link in metallic or subterranean environments.
- Radome Feature Advantage: High-strength ABS radome offers near-zero signal attenuation and prevents ice accumulation from detuning the antenna.
- Tactical SWaP Profile: Lightweight at 2.5 Kg, offering an elite gain-to-weight ratio for quick-deploy tactical masts and man-portable stations.
Key Applications:
- GNSS Ground Stations: High-reliability directional reception for precision navigation and timing.
- UAV Ground Control: Directional command and control for L-band tactical drones.
- Tunnel Communications: Providing uninterrupted wireless links in subterranean military and industrial networks.
- Satellite Telemetry: High-gain Ground-to-Space links for L-band satellite constellations.
Design Features: The AH-1117-11 uses extended stubs to provide the greater gain while maintaining the wider beam-width and designed to provide wideband directional transmission/reception of radio signals from 1100-1700 MHz bands including GPS L1, GPS L2, L5, L6 bands. This low-profile antennas use Circular Polarization Antenna Technology - which delivers better penetration through obstruction and interference. Both Right Hand Circular Polarized (RHCP) and Left Hand Circular Polarized (LHCP) helical antenna models are available. This commercial grade antenna provides superior performance as compare to significantly larger and more expensive products. Our AH series helical antennas are smaller than conventional yagi antenna. The AH-1117-11 Helical Antenna is supplied with a specially designed mounting arrangement for steering the antenna over 360 Degrees in Azimuth direction and 90 degrees in elevation.
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