bud_tn()
Returns the budget equivalent output-noise temperature
Syntax
y = bud_tn(vIn, iIn, noisevIn, Zs, BW, pinNumber, "simName") or y = bud_tn("SourceName")
Arguments
| Name | Description | Range | Type | Default | Required |
|---|---|---|---|---|---|
| vIn | voltage flowing into the input port | (-∞, ∞) | complex | yes | |
| iIn | current flowing into the input port | (-∞, ∞) | complex | yes | |
| noisevIn | noise input at the input port | (-∞, ∞) | complex | yes | |
| Zs | input source port impedance | [0, ∞) | real | 50.0 | no |
| BW † | bandwidth | [1, ∞) | real | 1 | no |
| pinNumber | Used to choose which pins of each network element are referenced ‡ | [1, ∞) | integer | 1 | no |
| simName | simulation instance name, such as "AC1" or "HB1", used to qualify the data when multiple simulations are performed. | string | no | ||
| SourceName | component name at the input port | string | yes | ||
| † BW must be set as the value of Bandwidth used on the noise page of the AC controller ‡ If 1 is passed as the pinNumber, the results at pin 1 of each element are returned; otherwise, the results for all pins of each element are returned. By default, the pinNumber is set to 1. | |||||
Examples
x = bud_tn(PORT1.t1.v, PORT1.t1.i, PORT1.t1.v.noise)
x = bud_tn("PORT1")
Defined in
$HPEESOF_DIR/expressions/ael/budget_fun.ael
See Also
Notes/Equations
Used in AC simulation
This is an equivalent output-noise temperature (in Kelvin) from the input port to the terminal(s) of each component, looking into that component. The noise analysis and noise contribution control parameters in the AC Simulation component must be selected: "Calculate Noise" and "Include port noise." For the source, the parameter "Noise" should be set to yes. The output-noise temperature is always calculated per IEEE standard definition with the input termination at 290 K.
 | Note Remember that the budget function can refer only to the default dataset, that is, the dataset selected in the data display window. |
Budget Path Measurements
Instead of all components in alphabetical order, this function can report its values just for the components selected in a budget path, and following the sequence in that path. To facilitate the budget path measurements the name of the budget path variable, as defined in the Schematic window, needs to be entered as the pinNumber argument.
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