How to feed a microstrip patch antenna on an infinite ground using an edge feed

Esti
Esti
Altair Employee
edited April 15 in Altair HyperWorks

This article is a practical guide on how to feed a microstrip patch antenna on an infinite ground using an edge feed.

As an example, we will have a look at a microstrip patch antenna fed by a coaxial cable via an SMA connector connected to a feed line.

 

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The front and side (section) view of the physical microstrip patch antenna for illustration purposes. Dimensions not to scale.

 

The patch antenna is modelled using an infinite ground plane. A good approximation of a microstrip patch antenna (fed using a feed line) is to use a microstrip port where the connector would have been located. A voltage source is then added to the microstrip port to excite the patch antenna.

 

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An example of a micostrip patch antenna on an infinite substrate in CADFEKO.

 

To excite the microstrip antenna:

  • Select the edge at the end of the feed line.

 

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The edge at the end of the feed line is selected.

 

  • Add a microstrip port to the selected edge.

 

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The Create Microstrip Port dialog.

 

 

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A microstrip port is added to the selected edge.

 

  • Add a voltage source to the microstrip port.

 

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A voltage source is added to the microstrip port.

 

View the following links for more information:

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