| # | Model | Frequency | Bandwidth | Gain | ENQ | ||
| 1. | AS-500-4000 | 500 - 4000 MHz. | 500-4000MHz | 3~6 dBic |  |
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| 2. | AS-1000-3000 | 1000-3000 MHz | 1000-6000 MHz | 3~6 dBic | |
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| 3. | AS-1000-6000 | 1000-6000 MHz | 1000-6000MHz | 3~6 dBic | |
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| 4. | AS-1000-9000 | 1000-9000 MHz | 1000-9000MHz | 3+ dBic | |
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| 5. | AS-300-3000 | 300-3000 MHz | 300-3000MHz | 3~6 dBic | |
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| 6. | AS-300-6000 | 300-6000 MHz | 300-6000MHz | 3~6 dBic | |
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| 7. | AS-500-2000 | 500-2000 MHz. | 500-2000MHz. | 3~6 dBic | |
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| 8. | AS-500-6000 | 500-6000 MHz | 500-6000MHz. | 3~6 dBic | |
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| 9. | AS-800-3000 | 800-3000 MHz | 800-3000MHz | 3~6 dBic | |
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| 10. | AS-800-4000 | 800-4000 MHz | 800-4000MHz | 3~6 dBic | |
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| 11. | AS-800-6000 | 800-6000 MHz | 800-6000MHz | 3~6 dBic | |
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Antenna Experts manufactures MIL-SPECS cavity backed dual arm Archimedean spiral antenna starting from 300MHz to 18GHz frequency band with different or customized mounting like flange mounting or pole mounting. All the cavity backed dual arm Archimedean spiral antennas are light weight, broadband and rugged spiral antennas, supplied with fiberglass plastic cover to protect the antenna from environment. The cavity backed spiral antenna is designed to perform with much higher efficiency than conventional rubber duck antenna.
Advanced Material Composition and Durability - Cavity Backed Spiral Antenna
The cavity-backed dual-arm Archimedean spiral antenna is engineered using 6063T6 ultra-corrosion-resistant architectural anodized aluminum alloy. To ensure peak performance in the most volatile environments, these antennas are treated with a specialized powder coating finish and sealed within a rugged aluminum cavity. This robust construction, complemented by a protective fiberglass plastic cover, guarantees long-term reliability for outdoor installations, making the system highly immune to environmental noise and physical degradation.
Ultra-Wideband Frequency Independence Spiral Antenna
Designed as a frequency-independent solution, these spiral antennas provide consistent directional transmission and reception across expansive spectrums, including specific models like the AS-1000-3000 (1000–3000 MHz), AS-800-6000, and AS-1000-9000. By utilizing an extended coaxial stubs technique, the antennas maintain a constant high gain—reaching up to 6+ dBic in premium configurations—while preserving a wide beam-width. This architecture ensures high-efficiency performance that significantly outperforms conventional wideband alternatives.
Circular Polarization and Signal Integrity
These antennas are optimized for applications requiring precise circular polarization, with both Left Hand Circular Polarization (LHCP) and Right Hand Circular Polarization (RHCP) configurations available. The cavity-backed design is critical for eliminating back-lobe radiation, effectively forcing the energy into a directional forward beam. This suppresses interference and enhances signal purity, which is essential for maintaining clear communication links in complex RF environments.
Versatile Mission Applications of Spiral Antenna
Due to their ultra-broadband characteristics and compact, lightweight profile, these antennas are ideal for high-stakes operations such as Electronic Counter Measures (ECM), Signal Intelligence (SIGINT), and Direction Finding (DF). Their ruggedized build supports seamless integration into airborne platforms, telemetry stations, and surveillance systems. Whether used for spectrum monitoring or high-speed scanning, the dual-arm Archimedean design provides the stability and sensitivity required for modern electronic warfare and intelligence gathering.
Specialized Integration and Connectivity
The system is designed for rapid deployment, featuring specialized mounting hardware compatible with vertical poles ranging from 38mm to 52mm (1.5"–2") in diameter, with customized brackets available for larger structures. Standard units are equipped with a top-mounted N-Female termination for weather-protected connectivity, though alternative interfaces such as SMA, BNC, or TNC can be integrated upon request. All internal matching circuits are housed securely within the main antenna body to maintain a streamlined and protected form factor.
AS-300-6000 Cavity Backed Spiral Antenna 300-6000 MHz
The cavity backed dual arm Archimedean spiral antenna model AS-300-6000 use 6063T6 ultra corrosion resistant architectural anodized aluminum alloy and designed to provide wideband directional transmission/reception of radio signals from 300-6000 MHz bands. The cavity backed dual arm Archimedean spiral antenna is supplied with powder coating finish to protect the antenna further from severe environmental conditions. Both left hand circular polarization (LHCP) and right hand circular polarization (RHCP) are available.
AS-1000-3000 Cavity Backed Spiral Antenna 1000-3000 MHz
The cavity backed dual arm Archimedean spiral antenna model AS-1000-3000 use 6063T6 ultra corrosion resistant architectural anodized aluminum alloy and designed to provide wideband directional transmission/reception of radio signals from 1000-3000 MHz bands. The cavity backed dual arm Archimedean spiral antenna is supplied with powder coating finish to protect the antenna further from severe environmental conditions. Both left hand circular polarization (LHCP) and right hand circular polarization (RHCP) are available.
AS-800-6000 Cavity Backed Spiral Antenna 800-6000 MHz
The cavity backed dual arm Archimedean spiral antenna model AS-800-6000 use 6063T6 ultra corrosion resistant architectural anodized aluminum alloy and designed to provide wideband directional transmission/reception of radio signals from 800-6000 MHz bands. The cavity backed dual arm Archimedean spiral antenna is supplied with powder coating finish to protect the antenna further from severe environmental conditions. Both left hand circular polarization (LHCP) and right hand circular polarization (RHCP) are available.
AS-1000-9000 Cavity Backed Spiral Antenna 1000-9000 MHz
The cavity backed dual arm Archimedean spiral antenna model AS-1000-9000 use 6063T6 ultra corrosion resistant architectural anodized aluminum alloy and designed to provide wideband directional transmission/reception of radio signals from 1000-9000 MHz bands. The cavity backed dual arm Archimedean spiral antenna is supplied with powder coating finish to protect the antenna further from severe environmental conditions. Both left hand circular polarization (LHCP) and right hand circular polarization (RHCP) are available.
IP66 Weather Rating of Outdoor Application with 6dBi Gain
The cavity backed dual arm Archimedean spiral antennas are frequency independent antenna and the cavity backed spiral antennas are weather protected suitable for outdoors use in applications requiring circularly polarized RF radiations. The cavity backed spiral antennas uses extended coaxial stubs technique and designed to provide world highest performance spiral antenna with 6+ dBic gain over the specified frequency band while maintaining the wider beam-width.