LPDP-500-3000

The LPDP-500-3000 is a professional-grade Dual Polarized Cross-Element Log Periodic Dipole Antenna with Radome, engineered for high-performance directional applications across the 500–3000 MHz spectrum. Housed in a ruggedized, military-green ABS enclosure, this antenna is optimized for wideband monitoring, scanning, and high-power jamming. Its ability to process horizontal and vertical radio signals simultaneously makes it a critical component for modern electronic warfare (EW) and SIGINT operations where environmental survival and signal integrity are paramount.

Design: Wideband Polarization Agility with Radome Protection

The LPDP-500-3000 is designed for high-stakes environments where both electrical performance and mechanical shielding are required.

• Simultaneous E & H Processing: Featuring 2 x N-Female ports, the antenna allows for the concurrent transmission or reception of vertical and horizontal signals, providing total polarization diversity.
• Aero-Dynamic Radome: The high-tech ABS enclosure is RF-transparent and specifically shaped (cylindrical/tapered) to minimize wind loading and ice formation, ensuring the antenna maintains its 9 dBi gain even in sub-zero or high-velocity wind conditions.
• No-Loading Integrity: By avoiding loading techniques to reduce size, the LPDA maintains a consistent, high-efficiency radiation pattern across the entire 500-3000 MHz range.

Construction: Industrial Hardening & RF Stability

Built to survive the most grueling global environments, the internal array is constructed from 6063T6 architectural anodized aluminum alloy.

• Fully Welded Elements: All radiating elements are welded to the support booms to prevent RF inter-modulation and mechanical fatigue.
• Military Finish: The antenna and radome are finished in MIL-grade Olive Green, with the internal components protected by an epoxy-based powder coating to resist corrosive gases and salt spray.
• D.C. Grounded Architecture: The system operates at D.C. ground, providing a low-resistance path for lightning protection and ensuring a quiet noise floor for sensitive surveillance equipment.

Reliability: 200W Multi-Mission Power

With a 200 Watt power handling capacity (at 2GHz), the LPDP-500-3000 is robust enough for continuous-duty jamming and high-capacity data links. The 18 dB Front-to-Back ratio ensures maximum energy is focused on the target while minimizing self-interference. Fully compliant with MIL-STD-810G, it is certified for extreme temperature cycles, high-intensity shock, vibration, and salt fog.

Technical Features

• Dual-Polarized Cross-Element Architecture: Simultaneous capture of all signal polarizations.
• Ruggedized ABS Radome: Protects elements from ice, salt, and wind while remaining aesthetically pleasing.
• Elite 500–3000 MHz Bandwidth: Covers UHF, GSM, LTE, and S-Band in a single directional unit.
• High-Efficiency 9 dBi Gain: Focused 65-degree beamwidth for precise signal targeting and monitoring.
• 200W Continuous Duty Power: Engineered for electronic countermeasures (ECM) and strategic transmission.
• MIL-STD-810G Certified: Tested for shock, vibration, humidity, fungus, and salt fog.
• Rear-Mount Installation: Permanently welded mounting fixture facilitates rapid installation on masts up to 52mm.
• Marine-Grade 316 Fasteners: Ensures total corrosion resistance for coastal and shipboard applications.
• Internal Cable Protection: Elements and connections are fully enclosed to prevent environmental degradation.
• D.C. Grounded Shielding: Integrated lightning protection and high noise immunity.

EW & Monitoring Guide: Urban Multipath & Radome Stealth

In high-density urban environments, the 500–3000 MHz spectrum (which carries LTE, 5G, Wi-Fi, and tactical data links) is a chaotic RF landscape. The LPDP-500-3000 is specifically designed to excel here by using its dual-polarized architecture and rugged radome to overcome signal fading and environmental interference.

1. Defeating Urban Multipath Fading

In a city, signals rarely travel in a straight line; they bounce off glass, steel, and concrete. This "multipath" effect causes the polarization of the signal to rotate and its phase to shift.

• The "Null" Problem: A single-polarized antenna will experience deep signal fades (up to 30 dB) when the incoming wave's polarization rotates away from the antenna's orientation.
• The Diversity Solution: By monitoring the Vertical and Horizontal ports simultaneously, your SIGINT system can perform Maximum Ratio Combining (MRC). When the signal fades on the vertical plane, it almost always "peaks" on the horizontal plane, ensuring a continuous, high-quality intercept of data bursts.

2. Tactical Stealth: The Radome Advantage

In Electronic Warfare (EW), information is as valuable as power. A standard "open" log-periodic antenna reveals its frequency range and orientation to anyone with binoculars.

• Visual Obscuration: The ABS Radome hides the internal element structure. An adversary cannot visually determine if the antenna is currently focused on 500 MHz (large elements) or 3000 MHz (small elements), nor can they see the exact polarization tilt.
• Environmental Integrity: In high-speed tactical movements, open elements can "whistle" or vibrate, creating a mechanical signature. The tapered radome is acoustically quiet and aerodynamically stable, rated for 200 Km/Hr winds.

3. SIGINT "Look-Through" in the 2.4 GHz Band

Monitoring the 2.4 GHz (Wi-Fi/ISM) band requires high sensitivity to pick out weak tactical signals among the noise.

• Low-Noise Floor: The D.C. Grounded design and the protective radome prevent "Precipitation Static" (P-Static). During rain or wind, unshielded antennas build up static charge that raises the noise floor; the LPDP-500-3000 stays "quiet," allowing you to see signals just above the thermal limit.
• Isolation for Jamming: The 20 dB Cross-Polarization Discrimination allows you to jam a target on one polarization (e.g., Vertical) while simultaneously monitoring the environment on the other (Horizontal) with minimal interference.

4. Wideband Directional Gain (9 dBi)

The 65-degree horizontal beamwidth acts as a precision "floodlight" for the 500–3000 MHz band.

• Target Concentration: Instead of wasting 200W of jamming power in 360 degrees, the LPDP-500-3000 concentrates that energy into a narrow sector. This significantly increases the Jamming-to-Signal (J/S) ratio at the target's receiver.
• Front-to-Back Protection: The 18 dB F/B ratio is critical for protecting your own team. It ensures that while you are jamming or monitoring a target, your own communication equipment located behind the antenna remains functional and unjammed.

High-Frequency Integration Checklist

• Coaxial Selection: At 3000 MHz (3 GHz), cable loss is extreme. Use LMR-600 or higher for runs exceeding 10 meters. A 10-meter run of standard RG-58 would lose nearly 70% of your power.
• Radome Maintenance: While ABS is rugged, ensure the radome is kept free of metallic paint or heavy carbon-based dirt, which can attenuate the high-frequency 3 GHz signals.
• Mounting Alignment: Ensure the antenna is mounted level. Because the beamwidth is only 55–65 degrees, a tilt of just 10 degrees can move the "Peak Gain" off the target, reducing your effective range.
• Connector Sealing: Use professional-grade weatherproofing. In the 3 GHz range, a single drop of water in the N-Female connector will cause a massive VSWR spike and potentially damage your 200W transmitter.