Linear Network Analysis Options Reference

Option

Default Value

Description

flag

LNA

LNA=simple AC analysis

NOISE_DC=noise analysis

LNAN=AC and noise

LNAG=AC and group delay

LNANG=AC, noise, and group delay

group_delay_pert

None

Perturbation (percentage of the test frequency) to be applied in group delay calculation

input_referred_noise

None

Node voltage, branch, or current to be used as the source for an input-referred noise calculation

result_as_initial_guess

1

Use LNA solution as initial guess in sweep

noise_output

None

Output nodes where noise should be computed in noise analysis. No noise factor or conversion gain is computed for these outputs

skip_dc

no

yes=Field solvers need not solve for DC. Use this option only for circuits with linear devices and no non-zero-valued sources except AC sources.

no=Solve for DC.

small_signal_beta

1e-12

Minimum conductance from node to ground in small-signal analysis

ZERO_PORT_VALUES

TRUE

Enable use of port impedance resistors

Note: may be obsolete