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Dome-type quadrifilar antennas 4-in-1

The “4-in-1” quadrifilar antenna is a dome-shaped antenna for EW systems designed to counter FPV drones, featuring circular polarization and a power-handling capability of up to 100 W.

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320 $
* with VAT

267 $
* excluding VAT

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* Price excluding VAT for:

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.
The procedure for completing a VAT-exempt purchase for military personnel is provided in the "Frequently Asked Questions" section at the bottom of the page. If you still have questions after reviewing this information, please contact a BlueBird Tech manager.

Technical characteristics

Parameter	Specification
Quadrifilar 700–850 MHz
Frequency	700-850 MHz
Gain	6 dBi
Polarization	Circular
Bandwidth	700-850 MHz
Input impedance	50 Ohm
Power	50 W
Connector	N male
Operating temperature	-40℃~+85℃
VSWR	700 – 1,3 / 850 – 1,6
Dimensions	230 x 220 x 220 mm
Weight	800 g
Quadrifilar 800-950 MHz
Frequency	800-950 MHz
Gain	6 dBi
Polarization	Circular
Bandwidth	800-950 MHz
Input impedance	50 Ohm
Power	50 W
Connector	N male
Operating temperature	-40℃~+85℃
VSWR	1.4 (across the entire frequency range)
Dimensions	230 x 220 x 220 mm
Weight	800 g
Quadrifilar 900-1050 MHz
Frequency	900-1050 MHz
Gain	6 dBi
Polarization	Circular
Bandwidth	900-1050 MHz
Input impedance	50 Ohm
Power	50 W
Connector	N male
Operating temperature	-40℃~+85℃
VSWR	900 – 1,4 / 1050 – 1,3
Dimensions	230 x 220 x 220 mm
Weight	800 g
Quadrifilar 420-550 MHz
Frequency	420-550 MHz
Gain	6 dBi
Polarization	Circular
Bandwidth	420-550 MHz
Input impedance	50 Ohm
Power	50 W
Connector	N male
Operating temperature	-40℃~+85℃
VSWR	1.5 (across the entire frequency range)
Dimensions	300 x 335 x 335 mm
Weight	1700 g

What kind of device is this?

Dome-type antennas – quadrifilar “4-in-1” by BlueBird Tech are a set of quadrifilar antennas with circular polarization, designed for EW systems used to counter FPV drones. Their key feature is the formation of an electromagnetic dome above the protected object, providing effective protection against aerial threats from above and stable performance with signals of different polarization. They are used in EW systems to protect equipment, positions, and facilities in field and combat conditions.

Functions of dome-type antennas – quadrifilar “4-in-1” by BlueBird Tech

Creation of dome protection for electronic warfare (EW) systems against hostile FPV drones.
Effective counteraction to unmanned aerial vehicles attempting to bypass defenses from above.
Operation with both horizontally and vertically polarized signals thanks to circular polarization.
Formation of all-around protection for equipment and positions within the antennas’ operating frequencies.
Capability to operate across a wide frequency range from 420 to 1050 MHz.
Stable performance at power levels of up to 50 W for each antenna in the set.
Compact design that simplifies installation and use in environments with physical obstacles, such as tree branches.

Operating principle of dome-type antennas – quadrifilar “4-in-1” by BlueBird Tech

Dome-type antennas – quadrifilar “4-in-1” are used in electronic warfare (EW) systems to create an electromagnetic dome above the protected object.
Thanks to circular polarization, they effectively interact with drone signals regardless of their orientation.
The set covers multiple frequency ranges, providing reliable counteraction against FPV drones, especially in static positions.

By purchasing the dome-type quadrifilar “4-in-1” antennas in the official factory configuration, you will receive:

Quadrifilar antenna, 700–850 MHz — 1 pc.
Quadrifilar antenna, 800–950 MHz — 1 pc.
Quadrifilar antenna, 900–1050 MHz — 1 pc.
Quadrifilar antenna, 420–550 MHz — 1 pc.

Delivery terms for dome-type quadrifilar “4-in-1” antennas

Delivery is carried out exclusively via Nova Poshta. Other delivery services are not used.

Warranty for dome-type quadrifilar “4-in-1” antennas

Warranty for dome-type quadrifilar “4-in-1” antennas is 12 months from the date of purchase.

Warranty service is provided by the manufacturer’s service center – BlueBird Tech.

The warranty does not cover defects resulting from:

mechanical damage (impacts, drops, submersion in water, housing deformation, etc.);
improper or careless handling of the device;
violation of operating, transportation, or storage requirements;
unauthorized modification or tampering with the device structure.

Return and exchange conditions for dome-type quadrifilar “4-in-1” antennas

The company processes returns and exchanges in accordance with applicable legal requirements.

Return terms

Returns are possible within 14 days after receipt (for goods of proper quality).

Return shipping is arranged in accordance with prior agreement.

According to applicable legislation, you may return or exchange a product of proper quality if:

The product has not been used and shows no signs of use by the consumer, such as scratches, chips, abrasions, stains, etc.
The product is fully complete and the original factory packaging is preserved.
The product retains its commercial appearance and consumer properties.

Payment methods for dome-type quadrifilar “4-in-1” antennas

Full payment

You pay for the order in full and pick it up at the post office.

Why users choose dome-type quadrifilar “4-in-1” antennas

They form a dome-shaped protective coverage over the object.
They operate with both horizontally and vertically polarized signals.
They provide effective counteraction against FPV drones from above.
They are available in a wide frequency range from 420 to 1050 MHz.
Ukrainian development by BlueBird Tech.

About the manufacturer of dome-type quadrifilar “4-in-1” antennas

BlueBird Tech is a Ukrainian manufacturer of defense engineering electronics that develops and produces serial defense solutions. Our goal is to create technologies that protect lives and ensure Ukraine’s advantage on the battlefield.
To learn more about us and our journey, please visit the “About Us” page.

About Us

App Store & Google Market

5K+

downloads

Mobile application “BLueBird tech”

Firmware update
drone detector

Offline access to instructions,
news and useful materials

Dome-type quadrifilar “4-in-1” antennas are used in EW systems to counter FPV drones.

For military units, to provide dome protection over positions, equipment, and personnel, suppress FPV drone signals, and enhance defense against aerial threats.

For volunteer organizations, to equip units with dome-type antennas, enhance existing EW solutions, and improve protection levels in field conditions.

For critical infrastructure facilities, to ensure protection of areas, key technical assets, and stable system operation in zones at risk of unmanned aerial vehicle activity.

Dome-type antennas – quadrifilar “4-in-1” by BlueBird Tech

main indicators

Frequency range: 420–750 MHz / 700–850 MHz / 800–950 MHz / 900–1050 MHz
Gain: up to 6 dBi
Polarization: circular

Do you have any questions about the dome-type quadrifilar “4-in-1” antennas?

Call us – we will explain the technical details and advise you on how to integrate the dome-type quadrifilar “4-in-1” antennas into your existing protection system. Phone: +38 073 864 04 07 For safety, please use only the official communication channels listed on this website.

Phone Number

+38 073 864 04 07

Please note

that our original BlueBird Tech devices can only be purchased from us, on the manufacturer’s official website: blue-bird.tech

and on the official websites of our partners: flasharmy.com.ua, market.brave1.gov.ua, bezpeka.pro

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FAQ

What is an electronic warfare (EW) antenna, and what is it used for?

An EW antenna is a component of an electronic warfare system used to transmit jamming signals within a specific frequency range. Such antennas are designed to affect UAV control channels, telemetry links, and data transmission systems.

What antennas are used in EW systems?

EW systems use quadrifilar, sector, omnidirectional, and other specialized antennas operating across different frequency ranges. The choice of antenna type depends on the mission, the required coverage sector, and the types of UAVs the system is designed to counter.

What is the difference between an omnidirectional and a sector antenna?

An omnidirectional antenna radiates a signal in a full 360-degree pattern, providing circular coverage around itself. A sector antenna concentrates the signal within a defined sector, enabling higher efficiency and stronger performance in a specific direction.

What are quadrifilar antennas used for?

Quadrifilar antennas are used in dome-type electronic warfare systems to create a wide coverage area. Thanks to circular polarization, they ensure stable performance against UAVs regardless of their orientation in space.

How to choose an antenna for an EW system?

When selecting an antenna, it is important to consider the operating frequency range, target type, system use case, and required coverage area. It is also essential to take into account polarization type, gain level, and allowable power handling.

What frequencies do BlueBird Tech EW antennas support?

Depending on the model, BlueBird Tech antennas operate across different frequency ranges from 160 MHz to 6 GHz. This allows them to be used in systems designed to counter FPV drones, various types of UAVs, and other wireless communication systems.

What does antenna gain mean?

Antenna gain indicates how effectively an antenna focuses the signal in a specific direction. The higher the dBi value, the more efficiently the antenna concentrates radiated energy into a defined area.

Why is choosing the correct antenna polarization important?

Polarization affects system performance and interaction with the target. Depending on the type of UAV and the operational scenario, antennas with circular, vertical, or horizontal polarization may be used.

What antennas are suitable for dome-type EW systems?

Quadrifilar antennas with circular polarization are most commonly used in dome-type electronic warfare systems. They enable uniform coverage around an object and provide protection from multiple directions.

Can one antenna be used for different frequency ranges?

Each antenna is designed to operate within a specific frequency range. For maximum efficiency, it is necessary to use models whose specifications match the EW system’s operating parameters.

Where can I buy antennas for EW systems?

Antennas for EW systems, including quadrifilar, sector, omnidirectional, and specialized models, can be purchased through official BlueBird Tech channels. When selecting an antenna, it is important to consider the type of system, operating frequency range, and environmental conditions.