----- Original Message ----- 
From: "Grant Hodgson" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Saturday, October 07, 2006 12:30 PM
Subject: [soft_radio] Re: highest frequency usage of QSD, undersampling and 
waveguides


> For frequencies above 30MHz, devices called I/Q modulators and
> demodulators are used.  These are not exactly the same as QSEs/QSDs, but
> the end result is the same.

This quad MOSFET device works at up 6 GHz:

http://www.peregrine-semi.com/content/products/broadband/broadband_mosfet.html

73, Leon
--
Leon Heller, G1HSM
Suzuki SV1000S motorcycle
[EMAIL PROTECTED]
http://www.geocities.com/leon_heller 



 
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