On 09/10/2012 12:21 AM, Bruce Griffiths wrote:
NIST have indicated that mixer PN noise measurements with a non
dissipative terminations (even RF) are intended to be made.
Using a discrete mixer using diode connected transistors may also be
useful at least for 5MHz and 10MHz input frequencies in that their
flicker noise can be significantly lower than for mixers using diodes.
That actually relates back to Craig Nelson hacking audio gear. He was
really friendly and we had a nice chat about it. Read more here:
http://tf.boulder.nist.gov/general/pdf/2556.pdf
http://tf.boulder.nist.gov/general/pdf/2625.pdf
http://www.nist.gov/customcf/get_pdf.cfm?pub_id=908622
Cheers,
Magnus
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