Schottky diode selection

[kamal20khz]

Hi everyone. I need help in selecting Schottky diode for a rectifier at 2.4ghz. I have few 1n5819 diodes. Will they work at this frequency?

 

[goldsmith]

Hello Dear kamal20KHZ ( why 20 KHZ ?!!)
For schottky diode selection , you should , pay attention to below things:
1-Trr ( recovery reverse time )
2- maximum current
3- breakdown voltage
and internal capacitance
Best Wishes
Goldsmith

 

[jpanhalt]

I found one instance where a hobbyist asked about using the 1N5819 for 2.4 GHz detection, but there was no follow-up:

2.4Ghz field strength meter? - Page 2 - RC Groups

Some other options are listed there, though. Here are two other sites with frequency data. The first lists a couple of options that may be available i your area, such as the 1N5711 on page 2 and the BAT62 on page 7.The second one is also making a 2.4 GHz detector and gives other sources.

**broken link removed**
Field Strength Meter for 2.4 Ghz Wireless LAN

Have you searched on 2.4 GHz field-strength meters to find what others are using that might be available in your area?

John

 

[FvM]

I have few 1n5819 diodes. Will they work at this frequency?

Do they look like microwave components? You won't have much fun with 1N5819 above 1 MHz or so.

 

[kamal20khz]

Is 2.4ghz only mean microwave? I'm designing the ckt for RF. Name any diode if u know for this purpose. What abt bat15 or bat62?

 

[FvM]

Both are well suited for GHz range, but have different parameters. You didn't yet mention a frequency of your application. See the more detailed comments from jpanhalt.

 

[taylane]

There was a book by Steve Maas, I cannot remember the full name, but it was something like: "Microwave Cookbook".

This book includes extensive information about the utilization of diodes in various areas of Microwave Design. You can find detailed info on diode selection for your application.

 

[kamal20khz]

I have some options such as bat15 in rsdelivers. But my problem is that they are of surface mount SMD type. As i'm designing the ckt in general pcb i think i couldnt solder those. I need something like axial leaded ceramic or glass case diode.

 

[FvM]

1N5711 may fit your requirements.https://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00000759.pdf

 

[jiripolivka]

I used and can recommend Siemens BAR12 Schottky diode. I also used HSMS-series from Agilent, also good detectors at 2.45 GHz.