Dome-type antenna – quadrifilar 900–1050 MHz for EW systems
The 900–1050 MHz quadrifilar antenna is a dome-shaped antenna for EW systems designed to counter FPV drones, featuring circular polarization and a power handling capability of 50 W.
* with VAT
* excluding VAT
- government customers in the defense sector
- with an end-user certificate,
where the final recipient of the goods is law enforcement agencies,
Ministry of Defense, Armed Forces of Ukraine, state customers in the defense sector.
Dome Protection / Quadrifilar Antennas BlueBird Tech
Protect your electronic warfare (EW) systems from enemy drones using quadrifilar antennas. These antennas, with their unique design, provide dome-shaped protection, preventing enemy UAVs from bypassing your defense from above, significantly increasing the effectiveness of countermeasures. Thanks to circular polarization, they work efficiently with both horizontally and vertically polarized signals, ensuring reliability even in the most challenging conditions.
Although quadrifilar antennas may have slightly shorter suppression range compared to collinear counterparts, they offer an undeniable advantage — creating a true “electromagnetic dome” that provides comprehensive protection for your equipment. Their compact design allows them to avoid obstacles like tree branches, and they can handle power up to 100W, making these antennas exceptionally reliable even in harsh environments.
Antenna 900-1050 MHz
Ensure the highest level of protection for your systems with quadrifilar antennas — a trusted solution endorsed by military experts.
Technical characteristics:
Antenna for 900-1050 MHz Frequency:
- Frequency: 900-1050 MHz
- Gain: 2 dBi
- Polarization: Circular
- Bandwidth: 900-1050 MHz
- Input Impedance: 50 Ohms
- Power: 50 W
- Connector: N male
- Operating Temperature: -40℃ to +85℃
- VSWR: 900 MHz – 1.4 / 1050 MHz – 1.3
- Dimensions: 230 x 220 x 220 mm
- Weight: 800 g
It Dome-type antenna – quadrifilar 900–1050 MHz for EW systems includes:
Dome antenna for frequency 800-950 MHz – 1 pc.
The primary delivery method is via Nova Poshta. We also ship via Ukrposhta or Meest Express.
You can choose from several payment options:
-
Full Payment:
Pay for the order in full and collect it at the post office. -
Cash on Delivery:
Partial prepayment is required. If the item is not in stock, we start the production process. Afterward, we send the item and provide you with the tracking number. To collect the order from the post office, you will need to pay the remaining balance upon receipt. -
Partial Payment:
Reserve your order, and we begin the production process. Once your order is ready for shipment, you pay the remaining balance. We then send the item and provide you with the tracking number.
Our company processes returns and exchanges in accordance with legal requirements.
Return Period:
Returns are accepted within 14 days of receipt (for items of proper quality).
Return Delivery:
Return shipping is carried out as per prior agreement.
In accordance with current legislation, you may return or exchange items of proper quality if:
- The item has not been used and shows no signs of use by the consumer, such as scratches, chips, scuffs, stains, etc.
- The item is fully complete, and the factory packaging is intact.
- The item retains its commercial appearance and consumer properties.


Antennas of the dome type — on fixed positions (Fig. B). They have coverage OVER the object of protection at a better level, but have a smaller radius of action.
Other products in this category:
Harpina 5.8 GHz Antenna
Sector antenna 2.4 GHz
Sector antenna 5.2 GHz
Sector antenna 5.8 GHz
“Kumex” 2.1-2.7 GHz antenna
FAQ
It is a component of an electronic warfare system that enables the transmission or reception of signals within a specific frequency range.
Quadrifilar, sector, directional, or omnidirectional – depending on the task.
An antenna for EW (electronic warfare) systems is selected based on the operating frequency, system type, required jamming range, and deployment format. It is important to consider which drones the system is intended to counter, what coverage area needs to be created, and whether the system will be stationary or mobile.
An omnidirectional antenna, such as a 900–1050 MHz omnidirectional antenna for countering FPV drones, provides 360° coverage and forms a uniform jamming field around the position. These antennas are effective for monitoring airspace and creating a protective “dome” over a position, equipment, or infrastructure facility.
A directional antenna, such as a 5.8 GHz sector antenna used against DJI Mavic drones, works like a spotlight — concentrating energy in one direction. This allows it to suppress a specific drone or radio channel at a longer range and increase the effect within a defined sector.
A quadrifilar antenna, such as the VL23 quadrifilar antenna used for countering DJI Mavic drones, is used in dome-type EW systems and provides circular polarization. This type is critical for stable operation in complex electronic countermeasure environments and for effective anti-drone performance, especially where resistance to signal reflections is important.
Depending on the system configuration, sector panel solutions or multi-band antennas may also be used to simultaneously cover multiple frequency ranges and improve the overall effectiveness of the EW system.
The operating range of an antenna depends on its gain, directivity, transmitter power, and terrain conditions. On average, the following indicators are considered: antennas with a low gain of 1–3 dBi create a uniform suppression field within a radius of approximately 200–500 m around the position and are suitable for local protection. Models with medium gain of 3–6 dBi provide a stable suppression zone at a distance of about 500 m to 1.5 km. High-gain antennas with 9–14 dBi gain concentrate the signal in a specific direction and can operate at distances of 1.5–3 km or more within a sector, depending on the power of the EW system and the terrain.
EW antennas can be used in stationary, mobile, and modular systems. In stationary systems, they create a stable jamming zone to protect positions or facilities. In mobile solutions, compact and directional models are used, suitable for vehicle installation or rapid deployment. In modular systems, multiple antennas spanning different frequency ranges can be combined to simultaneously cover several bands, increasing the system’s overall effectiveness.
From ~350 MHz to 6 GHz, depending on the model.
You can order EW antennas through BlueBird Tech’s official channels or by contacting the sales department.