Defensive jamming against radar and RF threats
In an era of evolving threats, Alaris Antennas leads the way with cutting-edge Electronic Countermeasure (ECM) antennas. Designed to detect, locate, and neutralize hostile signals, our antennas deliver unrivaled precision, reliability, and versatility to empower your operations.From Counter-UAS solutions to advanced jamming and direction-finding technology, our range of antennas is built to perform in high-stakes scenarios. With options for air, land, and sea platforms, Alaris ECM antennas offer seamless integration, wideband performance, and the adaptability to protect critical assets in the most demanding environments.
What Our ECM Antennas Enable
Counter-UAS (C-UAS) Operations
Detect and neutralize hostile drones before they can surveil, disrupt, or attack critical assets. Our high-power directional antennas deliver focused jamming energy to disrupt drone command-and-control links, GPS navigation, and video downlinks, forcing hostile UAVs to return-to-home, land, or abort their missions.
Naval Platform Defense
Protect vessels from RF-guided threats such as hostile drones. Shipboard ECM antennas provide 360° coverage or focused directional or omni-directional jamming to degrade enemy systems, enhancing vessel survivability in contested waters.
Critical Infrastructure Protection
Defend high-value facilities, forward operating bases, and strategic installations against drone surveillance and attack. Persistent ECM coverage creates a protective barrier around critical assets, denying adversaries the ability to gather intelligence or deliver weapons via unmanned systems.
Force Protection in Tactical Environments
Shield ground forces and convoys from electronic threats. Mobile C-RCIED systems provide on-the-move protection, denying adversaries the electromagnetic advantage.
Why Our ECM Antennas Perform
Electronic Counter Measures demands antennas that can handle extreme power levels while maintaining pattern integrity. Our ECM antennas are engineered for high-power jamming applications where reliability, thermal management, and consistent radiation patterns directly determine mission success.
High-Power Handling
Focussed jamming energy where it is needed most. Our directional and omni-directional antennas either focus on target threats minimising interference with friendly systems and reducing detectability or create effective RF bubbles to protect vehicles from IEDs.
Circular Polarisation for Maximum Effectiveness
Many modern threats use circular polarisation (especially drones and satellite systems). Our circularly polarized antennas (SPRL-A0019, HELI-A0105) match threat signal characteristics, ensuring maximum jamming effectiveness regardless of target orientation or polarisation mismatch.
Wide Frequency Coverage for Diverse Threats
Modern threat environments include multiple emitter types: communications networks, navigation systems, and datalinks, often operating simultaneously across different frequency bands. Our ECM antennas provide broadband coverage from 1 MHz to 6 GHz, enabling a single jamming system to engage multiple threat categories without antenna reconfiguration. This multi-band capability delivers operational flexibility and faster response to evolving threat priorities.
Multi-Platform Integration
Designed for versatile deployment across land vehicles, naval vessels, and fixed installations. Robust mechanical design and environmental protection (from desert heat to Arctic cold) ensure reliable performance regardless of platform or operating conditions. Lightweight radomes and compact form factors simplify integration without compromising protection.
Featured products
LPDA-A0123
Wideband LPDA Antenna
This LPDA is a directional log-periodic dipole array that is primarily designed for high-powered transmit applications. It covers the frequency band of 800 to 6000 MHz at 100 W of power @ 6 GHz, with a typical gain of 10 dBi. The antenna is easily mounted at the rear for either vertical or horizontal polarisation. This antenna can be customised if required, for different frequency ranges.
- Frequency range
- 800 - 6000 MHz
- VSWR
- < 2.0:1
- Nominal input impedance
- 50 Ω
- Feed power handling
- See graph
- Gain
- > 10 dBi typical
- Polarisation
- Linear (vertical and horizontal)
- Dimensions (d x l)
- 203 mm x 1000 mm including bracket
- Weight
- 6 kg (incl. mounting bracket
- Material
- Stainless steel, plastic and fibreglass
- MTBF
- 75000 hours
- Wind survival
- -30 °C to +65 °C (no icing)
- Temperature (operational)
- - 30 °C to +65 °C
- Water and dust resistance
- IP65
OMNI-A0266
Vehicle-Mount Wideband High-Power Antenna
This wideband antenna is for signal interception of wireless communications. It is mounted on a 4/6 hole base with either a Ntype or a 4.3-10 female connector. The fibreglass tube contains the groundplane independent radiator. The array covers the GSM 900, PCS, UMTS/3G/LTE and Wi-Fi (both bands)
- Frequency range
- 500 - 6000 MHz
- Gain
- 0 dBi typical (in band)
- Azimuth pattern
- Omni, 3 dB ripple
- Polarisation
- Vertical
- Nominal impedance
- 50 Ω
- VSWR
- < 2.5:1 or better
- Power handling
- 500 - 2000 MHz: 150 W CW; 2000 - 4000 MHz: 100 W CW; 4000 - 6000 MHz: 80 W CW
- Connector
- N-type female at base
- Groundplane requirements
- Groundplane independent
- Dimensions (l x d)
- 580 mm x 80 mm
- Total mass
- < 1.6 kg
- Mounting
- NATO base flange, 4 and 6 holes
- Weatherproofing
- IP65 water resistant (when flange is mounted)
Products ideal for ECM Applications
Browse by Application
Counter-UAS Solutions
Advanced detection, location, and jamming capabilities
Digital Broadcasting
High-Linearity Amplifiers for Critical Broadcasting
Electronic Attack
Defensive jamming against RF threats
Electronic Surveillance
Detection, identification, and emitter tracking
Maritime Antenna Solutions
EW to high-power communication interception
Microwave Ablation
Precision Microwave Energy for Medical Therapy
Plasma Processing
Stable Power for Advanced Plasma Processing
Tactical Communications
Vehicle-to-dismount connectivity
Tactical Direction Finding
Secure communications under jamming and interferenceBrowse by Type
Block Up Converters (BUCs)
Unmatched performance in a compact, fanless design
Communication Antennas
Wide range of HF, VHF, UHF and SHF (L-, S- & C-band)
Direction Finding Antennas
Discover the power of accurate angles of arrival
Low Noise Amplifiers
High-power, low-distortion performance for critical comms.
Low Noise Block Down Converters
Precision RF energy for medical and industrial excellence.
Microwave Power Generators
Reliable satellite signal reception in the toughest environments.
Monitoring Antennas
Spectrum monitoring, signal reception & detection & ITU
Oscillators
Ultra-low phase noise oscillators with exceptional frequency stability
Power Amplifiers
Extract clarity from the faintest RF signals.
Steerable Beam Antennas (SBA)
Elevate Electronic Warfare and Counter-Drone / C-UAS applications
