AH-1400
GPS High Gain Circular Polarized Helical Antenna
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| AH-1400 | GPS High Gain Circular Polarized Helical Antenna | 1200-1600MHz | 12 dBi. |  |  |  |
Overview: AH-1400 High-Gain GPS L1 & L2 Helical Antenna
The AH-1400 is a professional-grade Circular Polarized GPS L1 & L2 Band Helical Antenna designed for the 1200–1600 MHz frequency range. Delivering a robust 12 dBic gain in a compact, low-profile form factor, this directional aperture is a premier solution for GPS signal augmentation, L-band tactical data links, and high-performance communication in challenging environments. By utilizing advanced helical winding and circular polarization (RHCP/LHCP), the AH-1400 provides superior signal penetration and multipath rejection, outperforming traditional linear antennas in complex subterranean tunnels and urban theaters.
Battlefield Durability: Built to survive the most punishing environmental extremes
The AH-1400 is encased in a high-tech ruggedized radome made of high-strength 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 compliant with MIL-STD-810G protocols. It maintains structural integrity in winds up to 200 Km/Hr and extreme thermal cycles, finished in tactical olive green 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, which prevents geometry shifts and eliminates internal RF inter-modulation. Its optimized 60-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 isolation from rearward interference and background ground noise.
Detailed Technical Features
- Multi-Band GPS Mastery: Precision-engineered to cover the 1200–1600 MHz window, supporting GPS L1, L2, and GLONASS frequencies.
- High-Gain Directional Output: Provides a consistent 12 dBic gain, offering a superior gain-to-size ratio compared to traditional linear arrays.
- Circular Polarization (CP): Available in RHCP or LHCP to virtually eliminate Faraday rotation and mitigate signal fading in high-interference zones.
- 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 for terrestrial and satellite links.
- Advanced Inter-Modulation Protection: High-strength copper elements are secured to the radome wall to maintain precise electrical geometry under vibration.
- Compact SWaP Profile: Lightweight design at 2.0 Kg with a radome length of 470 mm, ideal for quick-deploy tactical masts and mobile ground stations.
- Low VSWR Integrity: Maintains a better than 1.5:1 VSWR over the specified 200MHz span for maximum power transfer.
EW, SIGINT & Monitoring Compatibility
- Electronic Warfare (EW): Acts as a high-intensity directional jammer for L-band and GPS data links. Its circular polarization ensures the jamming signal bypasses linear anti-jam filters used in tactical receivers.
- 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.
Global & Environmental Compliances
- MIL-STD-810G Certified: Rigorously tested for High/Low Temperature, Humidity, Shock (Procedure IV), Vibration (Procedure I), Rain, Fungus, and Salt Fog.
- Rugged Ingress Protection: The radome is designed to withstand powerful water jets and dust ingress in coastal or tropical climates.
- EU Compliance: Manufactured in strict adherence to RoHS (lead-free), REACH (chemical safety), and WEEE (recycling) directives.
Key Advantages:
- Multipath Immunity: Inherently rejects reflected signals, providing a stable link in metallic or subterranean environments.
- Radome Feature Advantage: The high-strength fiberglass radome offers near-zero signal attenuation and prevents ice accumulation from detuning the antenna in arctic theaters.
- Superior to Yagi: Offers a wider beamwidth and higher gain in a much smaller footprint than conventional Yagi antennas.
Key Applications:
- GPS L1/L2 Ground Stations: High-reliability directional reception for precision navigation and timing.
- Tunnel Communications: Providing uninterrupted wireless links in subterranean military and industrial networks.
- UAV Ground Control: Directional command and control for L-band tactical drones.
- Satellite Telemetry: Ground-to-Space links for L-band satellite constellations.
Design Features: The AH-1400 uses extended stubs to provide the greater gain while maintaining the wider beam-width. This high-gain low-profile antennas use Circular Polarization Antenna Technology - which delivers better penetration through obstruction and interference. 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-1400 Helical Antenna is supplied with a specially designed mounting arrangement for steering the antenna in both planes, over 360 Degrees in Azimuth and 90 Degrees in Elevation for terrestrial and satellite links.
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