Calculators and software from Signal Processing Group Inc.

Continuously updated with new calculators

zodiff

Calculate the characteristic impedance of differential microstrip lines.

zo_low_loss_calc

Calculation of the characteristic impedance of low loss transmission lines

zdiff

Calculate the differential impedance of edge coupled parallel microstrip lines

XL_calculate

Calculate inductive reactance of a tranmission line from electrical length given permittivity, frequency and characteristic impedance

wdivider_1

Calculation of the frequency dependent effective permittivity efff

wavelength_calc

Calculation of the wavelength in media

watts2dbm

Watts to dbm calculator

vswr2returnloss

VSWR to return loss conversion. ( Return loss = -20log10(magnitude of reflection coefficient))

vrms2dbm

Convert rms voltage to dBm

voltage_ideal_line

Voltage distribution on an ideal transmission line

voltage_general_line

Voltage distribution on a general transmission line

ufactor

ufactor is a measure of stability

typet

Calculations for a type-t attenuator

typepi

Calculations for a type-pi attenuator

typeb

Calculations for a type-b network

typea

Calculations for a type-a network

tracecurrent_calc

Calculate the current carrying capability of a pcb trace both external and internal

TOUT

Calculate the output reflection coefficient of a two port.

TIN

Calculate the input reflection coefficient of a two port.

shorted_lowloss_line_z

Calculate the impedance of a shorted low loss line

shorted_ideal_line_zin

Calculate the input impedance of a shorted ideal line

shorted_general_line_zin

Calculate the impedance of a shorted general line

sfdr_calc

Calculate the spurious free dynamic range.

series_parallel_conversion

Convert a series circuit to its equivalent parallel form.

returnloss2vswr

Calculate vswr from return loss

retloss2refcoeff

Calculate the reflection coefficient from return loss

reflectioc2vswr

Calculate the reflection coefficient from vswr

reflectioc2imped

Calculate the impedance from the reflection coefficient

refcoeff2retloss

Calculate the return loss from the reflection coefficient

rect2pole_calc

Convert a number in complex format to polar format

reactance1_calc

Calculate impedance from L and C and frequency

qw

Quarter wave transmisson line matching

quarterwave_lowloss_line_z

Quarter wave low loss line impedance

quarterwave_ideal_line_z

Quarter wave ideal line impedance

quarterwave_general_line_z

Quarter wave general line impedance

propagation_constant_calc_new

Calculation of the propagation constant of ideal lines with real part equal to 0.0

propagation_constant_calc

Calculation of the propagation constant of lowloss lines

polar2_rect_calc

Convert a number from polar format to a complex number format.

phase_velocity_calc

Calculate the phase velocity of a signal on ideal transmission lines.

pcbresistance

Calculate the resistance of pcb traces assumng copper traces.

pcbcapacitance

Calculate the capacitance of a pcb trace.

pcb_z0c0

Calculate the characteristic impedance, capacitance and propagation delay of a pcb trace.

parallel_series_conversion

Convert a parallel circuit to an equivalent series circuit.

open_lowloss_line_z

Calculate the impedance of an open lowloss transmission line.

open_ideal_line_z

Calculate the impedance of an open ideal transmission line

open_general_line_z

Calculate the impedance of an open general line.

noisetemp_calc

Calculate the noise temperature from the noise figure and the noise figure from the noise temperature

mismatch_loss

A mismatch loss calculator.

microstripzo_pcb

Micostrip characteristic impedance calculator for PCB traces

microstripzo

Microstrip characteristic impedance calculator

microstripL

Calculate the inductance of a microstrip trace for PCB traces

microstrip_gap

Calculate the capacitance of a microstrip gap.

mic_amp

Calculate single stage amplifier gains

lowloss_line_zin

Calculate the input impedance of a lowloss line

lcbalun

Calculate the parameters of an LC balun. For the circuit check blog post on the SPG blog

lc_calc

Calculate L and C from a given reactance value.

l_calc

Calculate the physical length from the electrical length of a line

kfactor

Calculate Rollet's K factor

iotf

Calculate modified TIN and TOUT

inductancs_calc

Calculate the inductance of a PCB trace

impedance2refcoeff

Calculate the reflection coefficient from the impedance level.

imp2admit

Convert impedance to admittance

ideal_line_zin

Calculate the input impedance of an ideal line.

halfwave_lowloss_line_z

Calculate the impedance of a half wave low loss line.

halfwave_ideal_line_zi

Calculate the impedance of a half wave ideal line

halfwave_general_line_z

Calculate the impedance of a half wave general line

fract_wavelength_calc

Calculate the fractional wavelegth.

flicker_noise_calc

Calculate flicker noise

el_calc_new

Calculate electrical length

dbm2watts

Convert a dBm value to watts.

dbm2vrms

Convert a dBm value to a rms voltage

current_ideal_line

Current in an ideal line at a distance x.

current_general_line

Current at a distance x in a general line

crvolts

Calculate the differential voltage across the base-emitter junctions of bipolars with various ratios of current flowing through them.

complexz

Complex impedance matching with a transmission line

combine_parallel_Z

Combine parallel reactances

casline_new

Cascade transmission line matching

calculate_one_parallel_reactance

Calculate the reactance value from the parallel combined reactance value and one other reactance ( impedance matching algorithm. See book on impedance matching)

calc_shorted_stub_suscep

Calculate the susceptance of a shorted stub

calc_open stub_suscep

Calculate the susceptance of an open stub

addmit2imped

Convert admittance to impedance.