Types of Electronic Warfare (EW) Antennas

Antennas are not just auxiliary components, but actual “tools of influence” in electronic warfare (EW) systems. They are what generate the electromagnetic field, determine the coverage geometry, range, and effectiveness of jamming communication channels, navigation, and drone control. In practical terms, the difference between a properly selected antenna and a randomly chosen one can mean either complete control of the airwaves or zero results, even with a high-power transmitter.

The Role of Antennas in EW Systems

In any EW system, the antenna performs several key functions simultaneously. It emits jamming signals in the required frequency band, receives signals for analysis, and determines the direction and intensity of the energy impact. In fact, it is through the antenna that the system “interacts” with the airwaves.

It is critically important to understand that the effectiveness of electronic warfare depends not only on power, but also on how that power is distributed in space. That is why engineers pay the utmost attention to the choice of antenna type, its radiation pattern, and frequency characteristics.

Main Types of Antennas for Electronic Warfare

Modern electronic warfare systems use various types of antennas, each of which serves specific purposes.

Omnidirectional antennas

This is the basic solution for creating circular protection. Such antennas emit a signal uniformly in all directions, forming 360° coverage. They are often used in mobile systems or for defending positions when a threat may come from any direction.

Their main feature is versatility and simplicity. However, this comes at the cost of reduced range, as the energy is not concentrated but scattered.

Directional antennas

In contrast to omnidirectional antennas, these antennas concentrate the signal within a specific sector or narrow beam. This allows for a significant increase in range and jamming effectiveness.

This category includes panel, log-periodic, horn, and parabolic antennas. They are actively used for targeted jamming—for example, to jam a drone’s control channel or a GPS signal in a specific direction.

Among the wide variety available, several solutions stand out as the most commonly used in real-world electronic warfare (EW) systems:

• panel antennas — form a wide sector (typically 60–120°), well-suited for monitoring a specific direction;
• log-periodic antennas — versatile, operating across a wide frequency range;
• horn antennas — provide high accuracy and stability at high frequencies;
• parabolic antennas — offer maximum range due to a very narrow beam.

It is the combination of these types that allows for the construction of multi-level electronic warfare systems with flexible configuration of coverage areas.

Yagi antennas

Yagi antennas deserve a separate mention. They combine compactness with a relatively high gain, making them popular in tactical and portable solutions. They are a practical choice when a balance between mobility and effectiveness is needed.

Frequency bands: what exactly do antennas “jam”?

An antenna’s effectiveness directly depends on how precisely it matches the operating band. In electronic warfare, there is no “one-size-fits-all” solution—each channel requires its own frequency.

The most relevant bands:

• 300–1000 MHz — tactical and military radio communications
• 900/1800 MHz — GSM mobile networks
• 2.4 GHz and 5.8 GHz — control and video for FPV drones
• 1.5 GHz — satellite navigation (GPS)

Choosing the wrong frequency effectively renders even a high-quality antenna useless.

How to Choose an Antenna for Electronic Warfare

Selecting an antenna is always an engineering task, not a formality. It depends on the usage scenario, the type of threats, and operating conditions.

You should focus on several key parameters:

• coverage area (circular or sectoral);
• required suppression range;
• signal and frequency types;
• system mobility (stationary or portable);
• operating conditions (city, open terrain, frontline).

In real-world conditions, the best results come not from a single antenna, but from a properly configured array of several types.