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Compact MIMO Antennas for WLAN

Compact MIMO Antennas for WLAN Devices

Wireless devices require compact antennas while maintaining strong performance. MIMO antenna systems must be carefully designed to fit within small devices such as routers and mobile hardware.

Challenges

  • Limited physical space
  • Mutual coupling between antennas
  • Reduced radiation efficiency

Design Considerations

  • Proper antenna spacing
  • Diversity techniques
  • Efficient substrate materials

Typical Substrate

FR-4 substrate parameters:

  • Relative permittivity ฮตr ≈ 4.4
  • Loss tangent tanฮด ≈ 0.02
  • Thickness ≈ 1.6 mm

Applications

Compact MIMO antennas are widely used in WLAN routers, IoT devices, and wireless access points.

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