ddrplPssHarmThd

drplPssHarmThd(
o_waveform
x_harmonicNumber
)
=> x_THD / nil

Description

Calculates the total harmonic distortion (THD) in percentage for each waveform of frequency sweep. This function is available only for single-tone harmonic balance (hb) and single-tone periodic steady-state (pss) analyses.

THD is expressed as a percentage and calculated using the following formula:

where V1 is the RMS value of the fundamental frequency voltage, and V2, V3, ..., Vn are the RMS values from second harmonic through last harmonic frequencies.

Arguments

o_waveform	Waveform or a family of waveforms. The x vector of the waveform must be frequency. For example, vh('hb "/IFp" nil).
x_harmonicNumber	The harmonic number.

Value Returned

x_THD	THD value in percentage.
nil	THD value cannot be calculated because of an error.

Examples

Returns THD values for waveform vh at the specified harmonics 1 and 2. Note that vh represents the voltage across the net /IFp at all harmonics in the frequency domain of a single-tone harmonic balance analysis, hb.

openResults("./simulation/RFworkshop/mixer_testbench/maestro/results/maestro/ExplorerRun.0/psf/RFworkshop_mixer_testbench_1/psf")

; Opens simulation results of a single-tone hb analysis stored in the specified directory.

results()

;Lists the results available in the currently open results directory.

harmonicList(?resultsDir "./simulation/RFworkshop/mixer_testbench/maestro/results/maestro/ExplorerRun.0/psf/RFworkshop_mixer_testbench_1/psf" ?result "hb_fi")

;Returns a list of available harmonics for the specified result of the results directory.

selectResult('hb_fi)

;Selects the hb_fi result from the results directory.

outputs()

;Lists the outputs available in the selected result.

drplPssHarmThd(vh('hb "/IFp" nil) 1)

;Returns the THD value for waveform vh at the specified harmonic 1. Note that vh represents the voltage across the net /IFp at all harmonics in the frequency domain of a single-tone harmonic balance analysis, hb.

drplPssHarmThd(vh('hb "/IFp" nil) 2)

;Returns the THD value for waveform vh at the specified harmonic 2.

=>

"./simulation/RFworkshop/mixer_testbench/maestro/results/maestro/ExplorerRun.0/psf/RFworkshop_mixer_testbench_1/psf"

=> 

(hb_td hb_fd hb_fi model instance

    output designParamVals primitives subckts variables

)

=> 

(0 1 2 3 4

    5 6 7 8

)

=> stdobj@0x33f31e00

=> 

("/LOn" "/LOp" "/IFn" "/IFp" "/RF"

    "/VDDA1" "/VLO" "/VbiasLO" "/I19/net059" "I19.R2.R0.PLUSHEAD"

    "I19.R2.R0.MINUSHEAD" "I19.R1.R0.PLUSHEAD" "I19.R1.R0.MINUSHEAD" "/PORT0/PLUS" "/PORT1/PLUS"

    "/PORT3/PLUS" "/V0/PLUS" "/V3/PLUS" "/largeTone_harm_index"

)

=> 53.35389

=>202.5374

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