New Devices Added

A number of new, useful devices have been added

Filters

A few filters have been added. These filters all have high input impedance, low output impedance, perfect reverse isolation, and a filter in between. Of course, they have s-parameters.

Bessel low pass filter

A Bessel filter can be instantiated in the GUI and in netlists. The filter takes an order and a cutoff frequency.

Butterworth low pass filter

A Butterworth filter can be instantiated in the GUI and in netlists. The filter takes an order and a cutoff frequency.

Equalizers

Two equalizers have been added that are pertinent to the COM specifications for many channels.

CTLE

The continuous time linear equalizer (CTLE) has been added whose parameters are defined according to COM.

FFE

A feed-forward linear tapped delay line equalizer has been added. It takes a tap delay, a list of tap weights, and the number of precursor taps.

Transmission Lines

W element

The W element, useful for dealing with distributed, coupled transmission lines has been added. For more information on this element, see: http://www2.ece.rochester.edu/courses/ECE222/hspice/hspice_devmod.pdf

Waveform Generators

Multi-level Waveform

This is a true PAM-N waveform generator that can output PAM waveforms with any number of (power of two) levels.

Miscellaneous

Ideal Relay

The ideal relay is really useful in scripted applications using projects. Any SPXT relay can be instantiated with a position specifying which port is connected to the common. This way, schematics can be drawn with alternate circuit configurations based on relay position and the relay position can be controlled from within a script (instead of having to use a different project with a different schematic).

See Installation for installation instructions.