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PIN Diode question - RF Cafe Forums
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jom
Post subject: PIN Diode question Posted: Fri Aug 15, 2008 9:50
pm
Captain
Joined: Fri Jan 26, 2007 2:40 am
Posts:
14
What is the typical lowest usable frequency for a PIN diode?
I'm not all that familiar with them but I've done some calculations
and it seems to me you could use them to isolate frequencies below 1
MHz. I need to design a bank of HPFs for an HF radio and I don't want
to just use relays due to current requirements and size. I know the
PIN needs some but overall I will probably use lower DC.
My
main concern is the isolation at the lower frequencies.
Thanks
jom
Top
IR
Post subject: Posted: Sat
Aug 16, 2008 3:37 am
Site Admin
Joined: Mon Jun 27,
2005 2:02 pm
Posts: 373
Location: Germany
Hello jom,
You can work with PIN diodes up to low frequencies (10KHz and lower),
at the 1-10MHz region, Rs is not constant but increases.
In
the KHz region, the diode will act as normal PN diode.
So I
would say there is no problem to use it for your application.
Posted 11/12/2012
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