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Re: [Discuss-gnuradio] USB2 ADC and DAC discussion
From: |
Paul J. Zawada |
Subject: |
Re: [Discuss-gnuradio] USB2 ADC and DAC discussion |
Date: |
Thu, 5 Jun 2003 09:23:52 -0500 |
At 2:56 PM -0700 6/4/03, Matthew Ettus wrote:
http://comsec.com/wiki?UniversalSoftwareRadioPeripheral
Since the board is only baseband/IF, I am interested in finding people to work
on RF converters for it. One for the 1200MHz ham band, and one for the 2.4GHz
ISM band would be nice for starters. If you are interested in working on such
a project, let me know, and I can get you all the info you will need.
Matt and all,
I have just finished putting together a GNU Radio platform including
the Microtune tuner using the schematic Eric supplied. It's all
working quite well and you can see the results I've obtained
(including a few FFTs and DTV captures) at
http://ner.ncsa.uiuc.edu/sdr . Now I'm ready to start some real
work. :-)
I've been starting to plan to build a 900 MHz (902-928)
upconverter/downconverter for use with GNU Radio. I'd thought I
might start with a narrow band implementation to use a sound card and
work my way up to a broadband implementation for use with a
high-speed ADC/DAC solution such as the one you are working on.
(I've got the Measurement Computing ADC card, but I'm going to need a
DAC solution; so this one may fit the bill!) This will be my first
design at 900 MHz (or higher), so it may take me some time to get
ramped up and a decent design produced. The intent is to produce a
board at to receive and transmit at acceptable power levels for
unlicensed use while allowing the ability to add a power "brick" for
ham use.
My design hasn't progressed beyond a couple of block diagrams in my
engineering notebook, but now that I've got the Microtune
implementation built and operating I can concentrate more on
designing new hardware. (I do still need to familiarize myself with
the code too; so I plan on spending some time hacking on some
software as well...)
--zawada
--
Paul J. Zawada, PE | Principal Network Research Engineer
address@hidden | National Center for Supercomputing Applications
+1 217 649 2233 | University of Illinois at Urbana-Champaign