Author Topic: Beam Lead PIN Diode up to 40 GHz  (Read 1321 times)

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Offline Harry_22Topic starter

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Beam Lead PIN Diode up to 40 GHz
« on: May 16, 2024, 10:09:33 am »
Hello!
I would like to ask what model of beam lead PIN diodes are used in the following diplexers?
« Last Edit: May 16, 2024, 02:32:58 pm by Harry_22 »
 

Offline Harry_22Topic starter

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Re: Beam Lead PIN Diode up to 40 GHz
« Reply #1 on: May 21, 2024, 03:20:20 pm »
I found GC4902-GC4906 and GC4801-GC4802 from Microchip but they are written to be suitable for applications through 26 GHz.
https://www.microsemi.com/document-portal/doc_view/8714-gc4900-series-pdf
https://www.microsemi.com/document-portal/doc_view/8713-gc4800-series-pdf

 

Online jjoonathan

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Re: Beam Lead PIN Diode up to 40 GHz
« Reply #2 on: May 21, 2024, 04:16:15 pm »
Oh hey, I worked on a R&S diplexer much like that one the other day!

https://www.dropbox.com/s/8v5ghwzexq4pybw/Rohde%20Diplexer.pdf?st=9t2fgilb&dl=0

Unfortunately, while my replacement diode of choice (Skyworks DSM8100) had acceptable insertion loss in the ON state, it had poor isolation in the OFF state, leading to issues with the low band (which could still "see" the reactive stub behind the reversed biased PIN diode). It's still on my todo list to evaluate other PIN diodes and find one with better isolation.
 
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Offline Harry_22Topic starter

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Re: Beam Lead PIN Diode up to 40 GHz
« Reply #3 on: May 21, 2024, 07:36:16 pm »
Hi Jonathan!

Your research is very interesting.
I greatly appreciate your help!

Harry
 


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