AS-500-6000

The AS-500-6000 is an ultra-broadband Dual Arm Archimedean Cavity Backed Spiral Antenna engineered for total spectrum dominance from 500 MHz to 6000 MHz. This high-performance, frequency-independent antenna provides a single-point solution for directional transmission and reception across the UHF, L, S, and C bands. Specifically designed for Circular Polarization (LHCP or RHCP), it is a critical asset for Electronic Countermeasures (ECM), Signal Intelligence (SIGINT), and Counter-Drone (C-UAS) systems where mitigating multi-path interference and signal fading is paramount for mission success.

Design: Ultra-Wideband Directional Precision

The AS-500-6000 is meticulously designed to maintain consistent RF performance across a massive 5.5 GHz bandwidth. Utilizing an extended coaxial stubs technique, the antenna delivers a stable 3 to 6 dBic gain while preserving a wide 65–80 degree half-power beamwidth. This wide-angle directional coverage is essential for scanning large sectors without the sensitivity loss typical of narrower antennas. The cavity-backed architecture ensures all RF energy is focused forward, providing high immunity to noise and a superior front-to-back ratio, making it ideal for precision direction finding (DF) and persistent surveillance.

Durability: MIL-STD-810G Certified Engineering

Built for survival in the most punishing tactical environments, the AS-500-6000 is fully MIL-STD-810G compliant, having passed rigorous testing for shock, vibration, salt fog, and extreme temperatures. The internal radiating copper strips are protected by a 6063T6 architectural anodized aluminum cavity and a high-strength fiberglass cover. This ruggedized construction is rated for winds up to 200 Km/Hr and features a powder-coated finish to resist corrosion. With multiple mounting options—including mast and flange mounts—it seamlessly integrates with armored vehicles, naval masts, and airborne platforms.

Efficiency: Circular Polarization for Contested RF Space

A core advantage of the AS-500-6000 is its Circular Polarization, available in LHCP or RHCP configurations. This is critical for maintaining signal integrity in urban or mountainous terrain where multi-path reflections cause linear signals to "flip" and fade. With a power handling capacity of 150 Watts, this spiral antenna operates with significantly higher efficiency than traditional "rubber duck" or wideband whip antennas. It is the definitive choice for high-speed data telemetry and high-power electronic warfare missions where a "dead-solid" link is non-negotiable.

Technical Features

• Ultra-Broadband 0.5–6 GHz Coverage: Continuous operation from 500 MHz to 6000 MHz in a single, compact directional unit.
• Dual Arm Archimedean Design: Frequency-independent performance ensures stable gain and VSWR (2:1) across the entire spectrum.
• Circular Polarization (LHCP/RHCP): Eliminates signal fading and multi-path mismatch; ideal for drone defense and satellite tracking.
• MIL-STD-810G Ruggedization: Certified for shock, vibration, humidity, salt fog, and fungus resistance in combat zones.
• Extended Coaxial Stubs Technique: Provides constant 3+ dBic gain while maintaining wide horizontal and vertical beamwidths.
• High Power Capacity: Manages up to 150 Watts of RF power, supporting high-intensity ECM and jamming applications.
• Cavity Backed Shielding: Anodized aluminum cavity ensures maximum noise immunity and forward-focused radiation.
• Versatile Mounting Solutions: Standard mast mount (25.4–51mm) or specialized flange mount options for multi-platform integration.
• Architectural Grade Materials: Constructed from 6063T6 aluminum and high-strength fiberglass for ultimate structural longevity.
• Zero Field Tuning: Factory-calibrated for immediate "plug-and-play" deployment in receiving or transmitting roles.

Counter-Drone (C-UAS) Integration Guide: 0.5–6 GHz Wideband Defense

In the rapidly evolving landscape of Unmanned Aerial Systems (UAS), "frequency-hopping" and "spread-spectrum" drones have become the standard. The AS-500-6000 is specifically engineered to counter these threats by providing a continuous, high-intensity circular jamming field across the most critical control and video frequencies.

1. Full-Spectrum Denial: 500 MHz to 6000 MHz

Modern FPV (First-Person View) drones and loitering munitions no longer stick to standard 2.4 GHz or 5.8 GHz bands. They now utilize lower frequencies for better "punch-through" in foliage and higher frequencies for high-definition video.

• The AS-500-6000 Advantage: This antenna covers the entire spectrum from 500 MHz (targeting custom low-band control links) through the L, S, and C bands (targeting GPS, 2.4 GHz, 5.8 GHz, and 6 GHz video). By using a single antenna, you eliminate the "handover" lag between multiple jammers, ensuring the drone is saturated the moment it enters your airspace.

2. Neutralizing "Spin" with Circular Polarization

As a drone maneuvers or "banks" during an attack, its antenna orientation constantly changes. If you use a standard linear antenna for jamming, you will experience "polarization mismatch," where the jamming signal strength drops by up to 90% at certain angles.

• The Tactical Benefit: Because the AS-500-6000 is Circularly Polarized (LHCP or RHCP), it delivers a consistent jamming signal regardless of the drone's orientation. The "spiral" wave ensures that the drone's receiver is saturated whether it is flying level, diving, or banking, providing a "dead-solid" electronic shield.

3. Directional Accuracy and "Sector" Defense

In many C-UAS scenarios, you want to jam the incoming threat without disrupting your own friendly communications located behind the jammer.

• The Cavity Backing Advantage: The 6063T6 aluminum cavity acts as a backshield. It reflects all 150 Watts of RF energy forward into a 65–80 degree beam. This creates a high-intensity "kill zone" in front of the antenna while keeping the area behind it relatively "RF-quiet" for operators and friendly electronics.

4. High-Power Thermal Resilience

Continuous-duty jamming at 150 Watts generates significant thermal stress on antenna components.

• The Engineering Advantage: The AS-500-6000 utilizes copper strip radiating elements and an architectural-grade aluminum housing that acts as a heat sink. This prevents "impedance drift"—a common failure in cheaper antennas where heat causes the VSWR to rise, potentially damaging your expensive jamming transmitter.

Tactical C-UAS Installation Checklist

• Height is Range: At frequencies above 1 GHz, signal propagation is strictly "Line-of-Sight." Mount the AS-500-6000 as high as possible. Even a small vehicle-mounted mast can significantly increase your "detection-to-neutralization" distance.
• Multi-Antenna Arrays: For 360-degree base defense, a 4-antenna or 6-antenna array is recommended. Because of the 65–80 degree beamwidth, four AS-500-6000 antennas can overlap slightly to provide total hemispherical protection with no blind spots.
• MIL-STD-810G Environmental Check: Ensure the fiberglass front cover is free of heavy mud or metallic-rich dust. While the antenna is ruggedized for salt fog and rain, thick debris can "detune" the 5–6 GHz high-frequency response.
• Cable Integrity: At 6 GHz, cable loss is your biggest enemy. Use the shortest possible run of high-quality LMR-600 or LMR-900 coax to ensure the full 150 Watts reaches the antenna radiating elements.