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Internal/Embedded Antenna Technology

SELTECH provides Internal and Embedded Antennas components from the company ETHERTRONICS.

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Ethertronics designs and manufactures high performance, embedded antennas for a wide range of wireless devices. They have been chosen by major OEMs and ODMs around the world to support a broad array of applications including cellular, UMTS, WiFi, WIMAX, Bluetooth, GPS, Digital Video Broadcast and others. Their patented Isolated Magnetic Dipole™ (IMD) technology provides these manufacturers with optimized antenna size and performance, while exceeding safety emission requirements.

What is IMD?

IMD stands for Isolated Magnetic Dipole™, Ethertronics' patented, award winning, antenna technology that resists detuning in real life situations. It was developed to meet the rapidly growing need for increasingly sophisticated embedded antenna solutions. The result of years of research, development and testing, IMD consistently outperforms competing technologies in terms of smaller size, greater coverage and lower emissions. It is increasingly the choice of top product designers requiring optimal performance and size for demanding wireless applications.

IMD technology

Ethertronics product range covers all the  following applications:

  • Active antenna systems
  • Cellular antenna
  • Machine to Machine (M2M)
  • Mobile entertainment
  • Bluetooth
  • WiFi / WiMAX / WLAN
  • Unique applications


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Ethertronics IMD technology offers several advantages :

    • Higher isolation
    • Better Coverage
    • Less Interaction with Surroundings
    • Smaller Size
    • Lower Emissions

Also,  to support you during your design and make sure that you acheive your targets, Ethertronics development a  5 steps process:

    • Requirements Analysis
    • Antenna Design Assessment
    • Antenna Design Evaluation
    • Prototype Build
    • Production Build, Test & Deliver

Seltech provides the following antenna portfolio :

TYPE Picture Frequency range Applications
Active antennas technology  Active antennas technology Complete frequency range from Cellular to WIFI and LTE 2.6 GHz Wireless devices, 4G LTE for semaless mobility
Passive cellular antennas  Passive cellular antennas


1900/2100/2600 MHz

Mobile phones, notebook computers, industrial handhelds, PC cards and point-of-sale terminals
Global Positioning System (GPS) &/or GLONASS  Global Positioning System (GPS) &or GLONASS 1575, 1598 & 1606 MHz Position detection in device using one or several antennas. Designed for small and portable devices
Bluetooth, Zigbee, ISM 2.4GHz, Proprietary 2.4GHz  Bluetooth, Zigbee, ISM 2.4GHz, Proprietary 2.4GHz 2.4 GHz Mobile phones, notebook computers, cars, stereo headsets, MP3 players …
WIFI / WIMAX / WLAN 802.11 a/b/g/n or ac  WIFI 2.4 GHz &/or 5 GHz Notebook computers, access points, industrial handhelds, mobile phones …
Machine to Machine applications  Machine to Machine applications Any frequency Utility meter, point of sale, industrial applications, mission-critical communications ...
External antennas  External antennas 2 824 - 2400 MHz Routers, base stations, utility meters, WIFI, Femtocells …
Unique applications  Unique applications 1980 - 1990 MHz Cordless phones, FM radio, satellite radio, UWB and any other specific applications ...


Whatever your request on Antennas (active and passive), please feel free to contact us


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