LP-400-3000 High Gain LPDA | 400-3000 MHz 9 dBi Fiberglass Radome Antenna
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LP-400-3000

High Gain Log Periodic Dipole Antenna

ModelProduct DescriptionFrequencyGainDownloadPDFEnquiry
LP-400-3000High Gain Log Periodic Dipole Antenna400-3000MHz9 dBi.Download DatasheetDownload ManualPost Enquiry

The LP-400-3000 is a high-performance, ultra-wideband Log Periodic Dipole Antenna (LPDA) designed for seamless directional coverage from 400 MHz to 3000 MHz. Enclosed in a ruggedized Fiberglass Radome, this antenna provides a single-unit solution for the entire modern tactical and commercial spectrum, including military UHF, 4G/5G cellular, Wi-Fi, and S-Band satellite links. Its all-welded 6063T6 aluminum architecture ensures a consistent 7–9 dBi gain and extreme mechanical survivability, making it the premier choice for high-power jamming and spectrum monitoring in the world's most severe environmental conditions.

Design: Total Spectrum Visibility

The LP-400-3000 is engineered for operators who require comprehensive bandwidth without the logistical burden of multiple antenna swaps.

  • Ultra-Wideband Efficiency: By utilizing full-sized radiating elements without lossy loading techniques, the antenna maintains high radiation efficiency and a stable 9 dBi gain over 90% of the frequency band.
  • Rugged Fiberglass Radome: The high-tech fiberglass enclosure offers exceptional RF transparency and structural strength. It shields internal elements from corrosive saline air, acid rain, and ice formation. Its tapered shape ensures a low wind profile even in 200 Km/Hr gusts.
  • D.C. Grounded Safety: Operates at D.C. ground, providing a low-resistance path for lightning protection and suppressing atmospheric static for an ultra-quiet noise floor during sensitive monitoring.

Construction: MIL-SPEC Industrial Hardening

Constructed from 6063T6 architectural anodized aluminum alloy, the LP-400-3000 is built for rapid installation and long-term tactical reliability.

  • PIM-Free Welded Architecture: All elements are fully welded to the support booms to prevent RF inter-modulation and ensure mechanical stability under extreme vibration or shock (MIL-STD-810G).
  • Marine-Grade Durability: All hardware is made of marine-grade stainless steel. The unit is finished in Olive Green powder coating, providing superior resistance against salt fog and humidity in coastal zones.
  • Rear-End Mounting Plate: Fast installation on 51mm (2-inch) masts with optimized radiation patterns that are not distorted by the mounting mast.

Reliability: 150W Continuous-Duty Power

With a 150 Watt power handling capacity, this antenna is robust enough for high-power jamming and strategic data links. The focused 55-degree horizontal beamwidth ensures precision signal targeting, while the 16 dB Front-to-Back ratio provides excellent isolation for equipment located behind the antenna.

Technical Features

  • Ultra-Wideband 400–3000 MHz: One antenna for UHF, LTE, 5G, Wi-Fi, and S-Band.
  • Rugged Fiberglass Radome: Elite protection against environmental degradation and visual detection.
  • High-Efficiency 9 dBi Gain: Consistent directional precision across the entire band.
  • MIL-STD-810G Certified: Tested for extreme temperature (+80°C), shock, and salt fog.
  • Rear-End Mounting Plate: Fast installation on standard 2-inch masts.
  • Direct Ground Protection: Integrated lightning protection and enhanced noise immunity.

EW & Monitoring Guide: 400–3000 MHz Strategy

The LP-400-3000 is a premier tool for the modern, signal-dense urban battlefield.

1. Mastering Microwave Multipath

In city centers, signals reflect sharply off glass and metal. The 55-degree horizontal beamwidth acts as a "spotlight," allowing an operator to scan for the strongest reflected path (Multipath Exploitation) when a direct line-of-sight is blocked.

2. Tactical Stealth

The Fiberglass Radome serves as RF camouflage. By obscuring the internal elements, it prevents an adversary from visually identifying which frequency band (e.g., 400 MHz vs. 2.4 GHz) is being targeted, providing a critical layer of tactical security.

3. High-Power Jamming Success

To disrupt high-speed LTE or Wi-Fi links, a high Jamming-to-Signal (J/S) ratio is required. The 9 dBi gain concentrates power into a focused cone, exponentially increasing the Effective Radiated Power (ERP) on the target receiver.

 

Design Features: The LP-400-3000 log periodic dipole antenna log periodic dipole antenna uses 6063T6 ultra corrosion resistant architectural anodized aluminum alloy is designed to provide wideband directional radio signals from 400 to 3000 MHz frequency band. The extra spacers are used between the support booms to improve mechanical durability of antenna. The mounting bracket is welded at the back end of the dual booms of log periodic antenna which permits to change the polarization from horizontal to vertical and vice-versa. This log periodic dipole antenna system is particular suitable for transmission, reception or monitoring and jamming application due to its broadband design feature and small size. This log periodic antenna provides strong performance over the entire band. Log periodic antenna does not use loading technique to reduce the overall size of array.

Constructions: The log periodic dipole antenna is supplied complete in assembled condition. The LP-400-3000 assembled log periodic antennas outer-most dimensions are 0.65 meter (26 Inches) long and 0.38 meter (15 Inches) wide. The log periodic antenna operates at D.C. ground with low resistance discharge path for protection against lightning and immunity to noise. The coaxial cable sealed inside the support boom to make it weatherproof. All the screws, nuts and bolts of log periodic dipole antenna are made of marine grade stainless steel. Powder coating of the complete log periodic antenna provides extra protection against corrosion in saline weather present in coastal areas. The antenna is supplied with radome/housing with olive green color.

Electrical Specifications:
Frequency Range400-3000 MHz
Gain9 dBi.
Bandwidth400-3000MHz
PolarizationVertical or Horizontal
Input Impedance50 Ohms
Radiation PatternDirectional
Horizontal Beamwidth -Half Power Points65+/-10 Degrees
Front to Back Ratio17+/-3 dB.
VSWR - Equal To or Better Then2.5:1
RF Power Handling Capacity150 Watts
Input TerminationN-Female
Lightning ProtectionDirect Ground


 

Mechanical Specifications:
Antenna Materials6063T6 Aluminum Alloy
Mounting Hardware -MaterialsMarine Grade Stainless Steel
Wind Rating200 Km/Hr.
Overall Length650 mm (26 Inches)
Shipping Length750 mm (30 Inches)
Support Boom -
Material - O.D.
Aluminum
Square Tube
Elements - Materials
- Cross Section - Outer Diameter
Aluminum
Round Rod
Insulator MaterialTeflon & Nylon
Maximum Mount Pipe Diameter52mm (2 Inches)
Radome MaterialHigh Strength Fiberglass
Gross Weight4.5 Kgs.


 

Environmental Specifications:
Operating Temperature(-)30 to +70 Degrees Celsius
Storage Temperature(-)40 to +80 Degrees Celsius
Humidity0 to 95% RH