Diode Detector
Simulation, Design and Measurement

1. How to use S-parameter data files in ADS

These files are used for Simulation

In the second half of the tutorial, we will do the Layout

1-1. There are two ways to get your S-parameters:

1-2. To measure S-parameters of the diode

1-3. Find the S parameters of your HP diode, Look on this web page:http://www.hp.com/HP-COMP/rf/hprfhelp/products/diodes/hsms285x.htm#s-data

1-4. Copy and Paste the data into a text file (diode.txt).  Put this text file into your project directory.

Slide 9

1-5. Measured 2-port S-parameters of your diode including the pads:
filename is diode2pt.txt

1-6. Get a Part by typing S2P in the part window & Edit Parameter

1-7. Adding Zin block, MLIN, MLOC, MTEE and S2P

1-8. Simulate your Circuit to find Zin

1-9. Edit C_pad1 Parameter: Define C, W,S,L from the data sheet.  Units are from your default.
(C_pad1 represents a capacitor WITH its solder pads.)

1-10. Insert S2P parameter file

1-11. Simulate the circuit and look at the graph
(Data Display)

1-12. Data Display

1-13.  The Zin Plot,
Add markers at 2.4 GHz and 2.6 GHz on both the curves

1-14.  Add your single-stub network to the circuit

1-15. Data display after simulating

2. Generation of Layout

Use of Layout

2-1. Get a diode from Component Library.

2-2. Select diode from part library that is the same case size as ours

2-3. Replace the 2-port data element with the Diode and artwork

2-4. Click on the Layout and then Generate/Update Layout

2-5. Click OK on the message

2-6. Layout with the diode

Remove the Diode

2-7. Layout without the Diode
This is what you should mill.

What to turn in

Question?