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Which of the following methods provides the largest bandwidth?

Which of the following methods provides the largest bandwidth? Correct Answer Proximity coupling

  • Microstrip antennas, because of their characteristics like lightweight and low power handling capacity, are widely used in communication systems.
  • However, gain and bandwidth are sometimes low and not sufficient in most of the applications. ∴ By modifying the shape, and by using special materials, we can alter the bandwidth and gain of the system.
  • To couple power to a microstrip antenna is as important as the selection of a suitable geometry for a particular application.

 

A variety of feeding mechanisms are available for this, such as:

  • Microstrip feed
  • Coaxial feed
  • Aperture coupling feed and
  • Proximity coupling feed

 

The Proximity coupling feed technique is used for wider bandwidth.

It uses a two layer substrate with the microstrip line on the lower layer and the patch antenna on the upper layer. The feed line terminates in an open end underneath the patch as shown:

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