Connectors Lead the Way to 5G

Currently, the benefits of 5G are most apparent in personal devices such as smartphones and home appliances such as smart thermostats. But as the rollout of 5G gains momentum, its impact will be significant. Heavy data applications that benefit from real-time communications will make significant inroads. These applications include self-driving cars, robotic surgery, medical wearables, transportation management, and, of course, IIoT (Industrial Internet of Things) in today's smart factories.

What does all this have to do with connectors?

5G-Antenna-Tower 5G-Antenna-Tower

Electrical connectors are an important part of the infrastructure that enables 5G connectivity. They are the vital link between data transmission cables and information communication devices, the number of which has grown exponentially. Advances in high-speed data transmission have driven innovations in connector design in terms of performance, size and electromagnetic signal interference (EMI) shielding. Different versions and sizes are used in communications applications, but M16 connectors have become the preferred choice for 5G antennas.

In the case of base station antennas, the need for faster, more reliable data transmission has driven the development of connectors that can support the specific requirements set forth by the Antenna Interface Standards Group (AISG).The AISG defines the communication interface for the "Remote Electrical Tilt" (RET) of cellular phone antennas.The AISG standard helps to define the AISG RS-485 Connector (AISG C485) for outdoor applications. 

M16 connector M16 connector

Electrical Characteristics:

  • Rated voltage 32 V
  • Current carrying capacity of 5 A per contact
  • Contact resistance (≤ 5 mΩ)
  • Insulation resistance (≥108 Ω)

Mechanical characteristics:

  • IP67 Protection class
  • >500 docking cycles
  • Keying method
  • Vibration and shock resistant

Environmental conditions:

  • Resistant to harsh environments (heat, salt spray, sun and rain)

Materials and other characteristics:

  • Nickel plating on housing surface recommended
  • Contacts gold or silver plated
  • Crimp or solder terminations
  • M16 x 0.75 bolt locking system
  • EMC shielding

EMI Shielding : Millions of cell phones, computers, and smart devices can experience severe interference due to EMI as buildings and other physical objects block 5G radio frequencies. Optimized 360° EMC (Electromagnetic Compatibility) shielding for M16 connectors provides the highest integrity for sensitive signal and power connections. The shield is made of metal and can be used as a cable clamp or shield ring.

Effective shielding meets the attenuation requirements of DIN 47250-6. Attenuation is the loss of signal strength in a network cable or connection during transmission. It is usually measured in decibels or voltages. (see Figure above).

Continued positive outlook for circular connectors market

The global connector market was valued at USD 64.17 billion by the end of 2019. It is expected to grow at a CAGR of 6.7% from 2020 to 2027, with a market size of more than $98 billion in 2027. This figure includes all connector types - electrical, I/O, circular, printed circuit board (PCB) and others. Circular connectors represent about 7% of the overall market, with sales of $4.3 billion in 2020. As 5G, IIoT and other Industry 4.0 applications expand, the demand for higher-performance, smaller and lighter connectors will also increase.