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:
- QuadNet is a 32-bit Windows® program to design
and analyze active quadrature networks.
- 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.
- Plug in the values for a published design to see
how it works.
- Fine graphics outputs include sideband suppression,
the angles for each of the two chains, and the
deviation from target.
- Change or tune the stage time-constants and you can
generate a network with sideband suppression which is
not uniform across the audio band.
- 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
- Use the nearest-value routine to substitute the
nearest 5%, 1% or 0.25% values for the program-computed
values and see the result.
- Use the Monte Carlo mode to see what happens when
real-world parts are used with user-specified value
- Schematic is shown in graphics form. This is in
addition to a conventional "parts list."
- Handles orders 2 through 18, odd and even.
- Outputs to the printer are not just screen dumps
but are separate high-resolution routines.
- Writes a nice ready-to-run LTspice file for math
confirmation and/or to see the effects of a real-world
op-amp (Tonne Software has no connection with Linear