This graphics-intensive program designs and analyzes
active quadrature ("90-degree") networks for use in SSB
transmitters and receivers.
Here are the highlights of this program:
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QuadNet is a 32-bit Windows® program to design and
analyze active quadrature networks.
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Enter the lower and upper audio frequencies of interest,
along with the network complexity (order) and see the
resulting sideband attenuation. Change any of these items
to interactively refine your design.
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Plug in the values for a published design to see how
it works.
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Fine graphics outputs include sideband suppression,
the angles for each of the two chains, and the deviation
from target.
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Change or tune the stage time-constants and you can
generate a network with sideband suppression which is
not uniform across the audio band.
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Save as an overlay the current-schematic sideband
suppression plot, make changes and then recall that
stored response for comparison with new data by overlaying
the old plotted data on top of the current plot.
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Use the nearest-value routine to substitute the
nearest 1% or 5% values for the program-computed values
and see the result.
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Use the Monte Carlo mode to see what happens when
real-world parts are used with user-specified value
tolerances.
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Schematic is shown in graphics form. This is in addition
to a conventional "parts list."
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Handles orders two through ten, odd and even.
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Outputs to the printer are not just screen dumps but
are separate high-resolution routines.
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Writes a nice PSpice file for math confirmation
and/or to see the effects of a real-world op-amp
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