Diode Detector
Simulation, Design and Measurement
This tutorial has two parts (read through the whole tutorial before
you start):
•How to use S-parameter data file in ADS
The diode has S-parameters that are measured (in our case) or given in the Spec sheet.  To simulate the
Diode, you will use a 2-port Data element.  To make the diode detector, you will add a capacitor.
To match the diode detector, you will need to make a single stub matching network on the front.
Then you will  simulate to get the S-graphs and find the Zin.  This will tell you how the circuit should
work.
2. Generation of Layout
In order to solder the capacitor and diode to the board, you will use solder pads.  You will choose a
Different diode that has the same case size as the one we are using, and place that with its solder pads.
You will also place solder pads for the capacitor.  Now you can no longer simulate the performance
Of the circuit.  This is just for layout and milling. 
by You Chung  Chung   March, 2001