COJOT beam steering antennas with support for dual-polarized MIMO 

COJOT supplies Switched Beam Antennas (SBAs) for different frequency bands with support for MIMO (multiple input multiple output) – featuring dual RF inputs/outputs that are connected to a different polarization of the radiator elements. MIMO is an essential requirement as modern Radio Systems are often relying on this to enhance the capacity or coverage of a radio network.

COJOT SBAs are currently in use at major global players in multiple applications – fielded to Tactical Communication networks both on land and at sea. These contain fixed Point-to-Multipoint as well as Mobile-Ad-Hoc-Networks (MANET). SBAs fit extremely well to these kind of adapting networks like MESH – where on top of higher layer routing, physical RF link routing can also be utilized.

2x2MIMO System

Spectrum monitoring and management are key factors in these kind of modern communication networks and with different beam modes and fast beam steering capabilities, COJOT SBAs provide an ideal solution for these – offering enhanced LPI/LPD resistance.

SBA Enhances LPI/LPD Resistance

Automatic and quick network setup and management 

In addition to superior performance features and enhancements, COJOT beam steering antennas can also improve and facilitate common basic routines in a wireless network. One such example is when you add a new node to a mobile network, it is often problematic and time-consuming to manually allocate the precise direction of the best signal with directional antennas. However, using a SBA in omni-mode, the new node can join the network immediately and the link can be optimized afterwards by searching for the strongest signal using the SBA’s narrow beam. Similarly, the wide beam mode provides faster scanning time. The possibility to utilize sharp beams within a frame rate over the 360-degree area opens many possibilities for network management and usage of advanced network routing protocols like OSPF (Open Shortest Path First).


Coming Soon

  • BAND L/III+ (1350-2700 MHz): SBA1327B-DP

Introducing New 4G/5G Antennas for Counter-RCIED/Jamming Applications

COJOT introduces new wideband antennas that have been designed to meet the challenging requirements of mobile Counter-RCIED/Jamming applications for mobile networks.

In addition to high power handling capabilities and a rugged mechanical design, these new portable and vehicle antennas provide enhanced omnidirectional radiation performance to cover 4G / 5G frequencies.

View the new range:


  • Wideband dipole antenna
  • 690-3000MHz
  • 50W power rating


  • High gain dipole antenna
  • 690-3000MHz
  • Up to 75W power rating


  • High gain/high power dipole antenna
  • 700-2700MHz
  • Up to 175W power rating


  • Compact wideband dipole antenna
  • 2-8 GHz
  • 20W power rating

New Extended Beam Steering Antennas from COJOT

In a world where drone strikes are a near-daily occurrence, counter-drone measures are becoming increasingly important. At COJOT, we are working tirelessly on our beam steering antennas and proudly introduce two new versions with enhanced counter-UAS antenna functionality.

The new extended dual band SBA2456DB (10W) and high power SBA2456XDB (100W) are now covering the full 2 and 5GHz WiFi frequency bands (2.4 to 2.5 and 5 to 6 GHz), while providing the same excellent performance with up to 24 sharp beams and a minimum of 20-degree beamwidth to cover the full 360-degree horizontal area. The SBA2456 models are equipped with the latest updates of the COJOT SBA product family, including support for fast RS-485/422 and Ethernet interfaces as well as thoroughly environmentally tested mechanics – according to MIL-STD-810.

Fields of applications: Counter-UAS, Counter-Drone, EW, ISR applications

COJOT SBA product family:

C4i Band IV/C: SBA4450B and SBA4450XB

C4i Band III+/L: SBA1327B

5G: SBA3438B-DP

Live Webinar: Switched Beam Antennas – Where does the technology stand and what to expect next?

Join our free live webinar.

Gain insights into upcoming enhancements of RF, SW, Interface and mechanical features, and get to know about updates on integrated peripherals, like GPS, which will open new perspectives and will allow you to think beyond the horizon.

Switched Beam Antennas (SBAs) are innovative smart antennas that provide efficient beam steering functionality, i.e. enabling to steer beams with a heightened sensitivity and gain to a particular or multiple directions. With their ability for extremely fast beam switching, these SBAs provide improved performance and enhanced capabilities to RF-Systems used in applications such as:

  • Counter-Unmanned Aerial Systems (C-UAS)
  • Tactical communication networks
  • P2P and P2MP networks (C4I, 4G/5G, Public Safety, etc.)

Register below to join our upcoming live webinar on the 9th of February 2022 at 1pm EST.

Today, we have a variety of SBAs available for different bands and applications that we will introduce more in detail during the webinar. We have listed a few below:

Band IV

Band III+

Wifi: 2.4-2.5 + 5.7-5.9 GHz

5G: 3.4-3.8GHz

At COJOT, we have extended the range of Beam Steering Antennas with a high-power version for drone detection and jamming, as well as high-power tactical communication applications. The new high-power versions are specified for a power rating of up to 100 W – providing high-performance capabilities. The SBA antenna platform can also be adapted to support other frequency bands.

Please be aware that participants will not be able to see each other during the webinar and there will be an anonymous Q&A at the end.


Register to join our online seminar by clicking the button below.

Register for Webinar


The information collected will be used to confirm your registration and send you a link to join the webinar. COJOT is committed to protecting your privacy in accordance with the Finnish Personal Data Act (523/1999) §10 and in accordance with the General Data Protection Regulation (GDPR). Click here to access our privacy policy.

New upgraded Heavy-Duty L1/L2 GPS Antenna

COJOT introduces a new, updated and mechanically enhanced version of the E1215 L1/L2 GPS antenna.  With a new compact and lightweight mechanical design, this new version offers improved, out of band filtering.

The antenna’s new housing provides a cost effective solution that adds to increased environmental durability.

Key Features:

  • Gain (typical): L1: 21 dB | L2: 20 dB (+- 1.5 dB)
  • Built-in low noise amplifier
  • High outer band attenuation with integrated filtering
  • New: Drop test compliance (MIL-STD-810G Method 516.6, Procedure IV)

For more information about the new E1215 antenna, click here.

COJOT’s entire range of heavy-duty GPS antennas also includes the E1500, a heavy-duty GPS antenna, as well as the E1516, a navigation antenna supporting the GLONASS, GPS, Galileo and BeiDou satellite systems.


New Tactical VHF antennas for Command Posts

In today’s demanding world of mobile tactical communication applications, it is vital that the antenna in use offers high performance and enables a quick and easy set-up, supported by a compact and lightweight design allowing for ad-hoc movements and convenient transport.  COJOT is proud to introduce two new antennas that support these requirements.

 New: Stationary Tactical VHF Antenna WB30108BS (30-108MHz)

  • High performance
    • 80W power handling with a typical gain of 0 dBi over the full frequency area
  • Quick and easy installation
    • Can be used as standalone device or be installed onto a mast – without the need for  additional tools
    • Lightweight (4kg) and compact size when packed (~1,6m disassembled in carry-on bag), easy to move and transport

New: Magnetic Mount Antenna WB30108W (30-108MHz)

  • Quick setup and removal with yet reliable assembly
    • Ideal for situations where a permanent installation, e.g onto a vehicle, is not possible.
    • Vertical holding force ~28kg
  • 50W power rating

Converting an omnidirectional antenna into a directional one

The WD2250M-CR  is a corner reflector accessory which provides a  completely new approach to convert an omnidirectional antenna into a directional one through a simple add-on.  This innovative antenna is a quick add-on for existing dipole installations like the COJOT WD2250M. The WD2250M-CR comes in a handy carry-on bag (picture 1) and can be quickly assembled (picture 2) for use on existing systems (picture 3).

The WD2250M-CR offers

  • Antenna gain of 8-10 dBi
  • An easy to use pointing and locking mechanism
  • Usability with the COJOT Multi use antenna concept and respective models

When you need the highest efficiency in IED Countermeasures, choose our enhanced Counter RCIED Antennas

COJOT’s comprehensive range of mobile and fixed-site antennas for the range from 20 – 6000 MHz are a crucial element of today’s demanding RF systems.

Thanks to the enhanced technical specifications of higher power ratings and wider frequency ranges, combined with the use of new and innovative materials that provide enhanced mechanical properties COJOT vehicle and portable antennas are a perfect match for powerful IED Countermeasures.

Latest vehicle antenna design updates feature a new mounting flange that is made of lightweight, rust free composite material.

Some COJOT portable antennas feature a shock absorption spring that is made of rubber instead of steel. The beneficial characteristic of this type of shock absorption spring is that it makes the antenna up to 30 % lighter and better attenuates oscillation of the antenna.








Contact us to find out more about these and other antennas.

COJOT Steps Forward into Growth

’Success breeds success which requires that we position ourselves in the best possible way for further growth’ says Samu Lentonen, managing director of COJOT.

A proud supplier of antenna solutions for over 35 years, COJOT successfully continues to strengthen its role as a recognized and trusted partner for the supply, design and development of sophisticated SMART antennas, cutting-edge omnidirectional VHF/UHF/SHF wideband antennas and accessories for mobile and tactical communication, electronic counter measure and spectrum monitoring applications.

‘To meet the rising demand for COJOT products, we have increased the infrastructure capacity of our head office in Espoo, Finland. Our new larger facilities and state of the art equipment will support high quality and improved RF services, giving our customers in the global defence market the assurance they need that we can meet their demands stated Samu.

If you are planning to visit COJOT soon, this is what you can expect to see:

  • New modern collaborative workspaces and meeting rooms:
  • New, enlarged lab facilities and cutting-edge instrumentation:
    • RF-Lab:
      • New anechoic chamber:
        • Frequency range: 500-8000 MHz
        • Chamber size: 4 x 6 m (Measurement distance: 3 m)
      • Open air measurement track
        • Frequency range: 20-600 MHz
        • Measurement distance: 60 m
      • New accelerated high-power computing (HPC) unit for CST simulations
      • New measurement and prototyping tools like VNA and microscope
      • New automated Matlab-based Measurement software for R&D and Production: Depending on the measurement setup, the COJOT team is now able to measure products about 60-70 times faster per frequency.

    • HW-lab:
      • Own environmental test lab for testing and analyzing according to MIL-STD-810G
      • Temperature and humidity test chamber
      • Immersion tank (size 3 x 0.7 m)
      • UV test chamber
      • Vibration table
      • Oak Beam track
    • Upgraded protoshop.


Above : Protoshop

Above : New offices

Next generation SBAs from COJOT increase performance and usability

Following the great success of the SBA product family, COJOT Finland have enhanced their Switched Beam Antennas to provide improved performance, better system integration and usability.

The most important interface enhancement is the support for Ethernet based control. In addition, the RS-485  is enhanced to support up to 50MB/s communication speed.

Hardware enhancements include better shock and vibration resistance proven by rigorous testing.  The new mechanical platform has been analyzed for various ENV requirements without sustaining any loss of function or degradation of performance and supports options for additional peripherals like GPS antennas, 3D gyroscope, accelerometer and magnetometer

In addition to fixed-site installations like masts or shelters,  these mechanical enhancements also enable support for

  • Vehicular mounting
  • Naval vessel installation applications.

The usability is enhanced e.g. by clear markings that for example indicate beam zero direction for better antenna alignment.

To find out more about SBAs, watch this video.


SBA2458DB                                    SBA2458DB Interface showing enhanced markings