Tag Archives: Couplers

Microstrip Lange Coupler (5 GHz)

The Lange Microstrip (quadrature) coupler is known for it’s low loss, wide bandwidth and compact layout. Similar to other couplers, it consists of an isolated port, through port and coupled port.

You can build a microstrip Lange coupler using the DesignGuide tool in ADS:

langec0

 

These are the results for the equation-based simulation. These results admittedly look considerably better.

langecoupler2

 

This is the substrate used:

langecoupler1

 

These are the results for the momentum simulation. Admittedly, some tuning would improve this considerable.

langec3

And here is the layout component:

langec4

ADS Coupler Momentum Simulation

ECE435 – RF/Microwave Engineering, Professor Dr. Yifei Li
October 2019
Michael Benker
ADS Coupler Momentum Simulation

Build the ADS circuit.

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Run the momentum simulation and set parameters such as substrate.

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This is a momentum simulation. Let’s see if we can optimize this.

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Export the part to be used as a component in the workspace library in ADS.

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Now run an ADS simulation using the exported component, which uses a database of simulated results.

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If you step into the component, you will see component features.

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Now, tune the parameters to begin optimization.

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