#include <microstrip.h>

Inheritance diagram for MICROSTRIP:

Public Member Functions
	MICROSTRIP ()

void	Analyse () override
	Analyse track geometry parameters to output Z0 and Ang_L.

bool	Synthesize (SYNTHESIZE_OPTS aOpts) override
	Synthesis track geometry parameters to match given Z0.

void	SetParameter (const TRANSLINE_PARAMETERS aParam, const double aValue)
	Sets the given calculation property.

double	GetParameter (const TRANSLINE_PARAMETERS aParam) const
	Gets the given calculation property.

double &	GetParameterRef (const TRANSLINE_PARAMETERS aParam)
	Adds a constant to the given parameter.

std::unordered_map< TRANSLINE_PARAMETERS, std::pair< double, TRANSLINE_STATUS > > &	GetAnalysisResults ()
	Gets the output parameters following analysis.

std::unordered_map< TRANSLINE_PARAMETERS, std::pair< double, TRANSLINE_STATUS > > &	GetSynthesisResults ()
	Gets the output parameters following synthesis.

Protected Member Functions
void	InitProperties (const std::initializer_list< TRANSLINE_PARAMETERS > &aParams)
	Initialises the properties used (as inputs or outputs) by the calculation.

void	SetAnalysisResult (TRANSLINE_PARAMETERS aParam, const double aValue, const TRANSLINE_STATUS aStatus=TRANSLINE_STATUS::OK)
	Sets an analysis result.

void	SetSynthesisResult (TRANSLINE_PARAMETERS aParam, const double aValue, const TRANSLINE_STATUS aStatus=TRANSLINE_STATUS::OK)
	Sets a synthesis result.

bool	MinimiseZ0Error1D (TRANSLINE_PARAMETERS aOptimise, TRANSLINE_PARAMETERS aMeasure)
	minimizeZ0Error1D

bool	MinimiseZ0Error2D (TRANSLINE_PARAMETERS aParam1, TRANSLINE_PARAMETERS aParam2)
	minimizeZ0Error2D

double	SkinDepth () const
	Calculate skin depth.

Static Protected Member Functions
static double	UnitPropagationDelay (double aEpsilonEff)
	Calculates the unit propagation delay (ps/cm) for the given effective permittivity.

static std::pair< double, double >	EllipticIntegral (double arg)
	Computes the complete elliptic integral of first kind K() and the second kind E() using the arithmetic-geometric mean algorithm (AGM) by Abramowitz and Stegun.

static double	coth (const double x)
	Calculates cosh of the given argument.

static double	sech (const double x)
	Calculates sech of the given argument.

Protected Attributes
std::unordered_map< TRANSLINE_PARAMETERS, double >	m_parameters
	All input and output properties used by the calculation.

std::unordered_map< TRANSLINE_PARAMETERS, std::pair< double, TRANSLINE_STATUS > >	m_analysisStatus
	Analysis results.

std::unordered_map< TRANSLINE_PARAMETERS, std::pair< double, TRANSLINE_STATUS > >	m_synthesisStatus
	Synthesis results.

Static Protected Attributes
static constexpr double	m_maxError { 0.000001 }
	The maximum error for Z0 optimisations.

Private Types
using	TCP = TRANSLINE_PARAMETERS

Private Member Functions
void	SetAnalysisResults () override
	Sets the output values and status following analysis.

void	SetSynthesisResults () override
	Sets the output values and status following synthesis.

double	SynthesizeWidth () const
	Calculates the width with the current set of parameters.

double	conductor_losses () const
	Calculate the microstrip conductor losses per unit.

double	dielectric_losses () const
	Calculates the microstrip dielectric losses per unit.

void	microstrip_Z0 ()
	Calculates the microstrip static impedance.

void	dispersion ()
	Calculates frequency dependent parameters of the microstrip.

void	attenuation ()
	Calculates the attenuation of the microstrip.

void	mur_eff_ms ()
	Calculates the effective magnetic permeability.

void	line_angle ()
	Calculates microstrip length in radians.

Static Private Member Functions
static double	Z0_dispersion (double, double, double, double, double)
	Calculates the dispersion correction factor for the characteristic impedance static.

static double	Z0_homogeneous (double)
	Calculates the impedance for a stripline in a homogeneous medium, without cover effects.

static double	delta_Z0_cover (double, double)
	Calculates the cover effect on impedance for a stripline in a homogeneous medium.

static double	filling_factor (double, double)
	Calculates the filling factor for a microstrip without cover and zero conductor thickness.

static double	delta_q_cover (double)
	Calculates the cover effect on filling factor.

static double	delta_q_thickness (double, double)
	Calculates the thickness effect on filling factor.

static double	e_r_effective (double, double)
	Calculates effective dielectric constant from material e_r and filling factor.

static double	delta_u_thickness (double, double, double)
	Calculates the thickness effect on normalized width.

static double	e_r_dispersion (double, double, double)
	Calculates the dispersion correction factor for the effective permeability.

Private Attributes
double	Z0_0 { 0.0 }
	static characteristic impedance

double	er_eff_0 { 0.0 }
	Static effective dielectric constant.

double	mur_eff { 0.0 }
	Effective mag. permeability.

double	w_eff { 0.0 }
	Effective width of line.

double	Z0_h_1 { 0.0 }
	homogeneous stripline impedance

Friends
class	COUPLED_MICROSTRIP

Detailed Description

Definition at line 31 of file common/transline_calculations/microstrip.h.

Member Typedef Documentation

◆ TCP

using MICROSTRIP::TCP = TRANSLINE_PARAMETERS

private

Definition at line 33 of file common/transline_calculations/microstrip.h.

Constructor & Destructor Documentation

◆ MICROSTRIP()

MICROSTRIP::MICROSTRIP ( )

inline

Definition at line 36 of file common/transline_calculations/microstrip.h.

References ANG_L, ATTEN_COND, ATTEN_DILECTRIC, EPSILON_EFF, EPSILONR, FREQUENCY, H, H_T, MUR, MURC, PHYS_LEN, PHYS_WIDTH, ROUGH, SIGMA, SKIN_DEPTH, T, TAND, TRANSLINE_CALCULATION_BASE::TRANSLINE_CALCULATION_BASE(), UNIT_PROP_DELAY, and Z0.

Member Function Documentation

◆ Analyse()

void MICROSTRIP::Analyse ( )

overridevirtual

Analyse track geometry parameters to output Z0 and Ang_L.

Implements TRANSLINE_CALCULATION_BASE.

Definition at line 32 of file common/transline_calculations/microstrip.cpp.

References attenuation(), dispersion(), line_angle(), microstrip_Z0(), and mur_eff_ms().

Referenced by Synthesize().

◆ attenuation()

void MICROSTRIP::attenuation ( )

private

Calculates the attenuation of the microstrip.

Definition at line 369 of file common/transline_calculations/microstrip.cpp.

References ATTEN_COND, ATTEN_DILECTRIC, conductor_losses(), dielectric_losses(), TRANSLINE_CALCULATION_BASE::GetParameter(), PHYS_LEN, TRANSLINE_CALCULATION_BASE::SetParameter(), SKIN_DEPTH, and TRANSLINE_CALCULATION_BASE::SkinDepth().

Referenced by Analyse().

◆ conductor_losses()

double MICROSTRIP::conductor_losses ( ) const

private

Calculate the microstrip conductor losses per unit.

Definition at line 265 of file common/transline_calculations/microstrip.cpp.

References TRANSLINE_CALCULATIONS::C0, delta, er_eff_0, FREQUENCY, TRANSLINE_CALCULATION_BASE::GetParameter(), M_PI, PHYS_WIDTH, ROUGH, SIGMA, SKIN_DEPTH, Z0_h_1, and TRANSLINE_CALCULATIONS::ZF0.

Referenced by attenuation().

◆ coth()

static double TRANSLINE_CALCULATION_BASE::coth ( const double x )

inlinestaticprotectedinherited

Calculates cosh of the given argument.

Definition at line 211 of file transline_calculation_base.h.

Referenced by COUPLED_STRIPLINE::calcZeroThicknessCoupledImpedances().

◆ delta_q_cover()

double MICROSTRIP::delta_q_cover ( double h2h )

staticprivate

Calculates the cover effect on filling factor.

Definition at line 216 of file common/transline_calculations/microstrip.cpp.

Referenced by microstrip_Z0().

◆ delta_q_thickness()

double MICROSTRIP::delta_q_thickness	(	double	u,
		double	t_h )

staticprivate

Calculates the thickness effect on filling factor.

Definition at line 222 of file common/transline_calculations/microstrip.cpp.

References M_PI.

Referenced by microstrip_Z0().

◆ delta_u_thickness()

double MICROSTRIP::delta_u_thickness	(	double	u,
		double	t_h,
		double	e_r )

staticprivate

Calculates the thickness effect on normalized width.

Definition at line 234 of file common/transline_calculations/microstrip.cpp.

References M_PI.

Referenced by microstrip_Z0().

◆ delta_Z0_cover()

double MICROSTRIP::delta_Z0_cover	(	double	u,
		double	h2h )

staticprivate

Calculates the cover effect on impedance for a stripline in a homogeneous medium.

Definition at line 196 of file common/transline_calculations/microstrip.cpp.

References atanh().

◆ dielectric_losses()

double MICROSTRIP::dielectric_losses ( ) const

private

Calculates the microstrip dielectric losses per unit.

Definition at line 294 of file common/transline_calculations/microstrip.cpp.

References TRANSLINE_CALCULATIONS::C0, EPSILONR, er_eff_0, FREQUENCY, TRANSLINE_CALCULATION_BASE::GetParameter(), M_PI, and TAND.

Referenced by attenuation().

◆ dispersion()

void MICROSTRIP::dispersion ( )

private

Calculates frequency dependent parameters of the microstrip.

Definition at line 347 of file common/transline_calculations/microstrip.cpp.

References D, e_r_dispersion(), EPSILON_EFF, EPSILONR, er_eff_0, FREQUENCY, TRANSLINE_CALCULATION_BASE::GetParameter(), H, PHYS_WIDTH, TRANSLINE_CALCULATION_BASE::SetParameter(), UNIT_PROP_DELAY, TRANSLINE_CALCULATION_BASE::UnitPropagationDelay(), Z0, Z0_0, and Z0_dispersion().

Referenced by Analyse().

◆ e_r_dispersion()

double MICROSTRIP::e_r_dispersion	(	double	u,
		double	e_r,
		double	f_n )

staticprivate

Calculates the dispersion correction factor for the effective permeability.

Definition at line 253 of file common/transline_calculations/microstrip.cpp.

Referenced by dispersion().

◆ e_r_effective()

double MICROSTRIP::e_r_effective	(	double	e_r,
		double	q )

staticprivate

Calculates effective dielectric constant from material e_r and filling factor.

Definition at line 228 of file common/transline_calculations/microstrip.cpp.

Referenced by microstrip_Z0().

◆ EllipticIntegral()

std::pair< double, double > TRANSLINE_CALCULATION_BASE::EllipticIntegral ( double arg )

staticprotectedinherited

Computes the complete elliptic integral of first kind K() and the second kind E() using the arithmetic-geometric mean algorithm (AGM) by Abramowitz and Stegun.

Returns: std::pair<K, E> where K = first kind integral, E = second kind integral

Definition at line 159 of file transline_calculation_base.cpp.

References INFINITY, M_PI_2, and NR_EPSI.

Referenced by COUPLED_STRIPLINE::calcSingleStripImpedances(), and COUPLED_STRIPLINE::calcZeroThicknessCoupledImpedances().

◆ filling_factor()

double MICROSTRIP::filling_factor	(	double	u,
		double	e_r )

staticprivate

Calculates the filling factor for a microstrip without cover and zero conductor thickness.

Definition at line 205 of file common/transline_calculations/microstrip.cpp.

Referenced by microstrip_Z0().

◆ GetAnalysisResults()

std::unordered_map< TRANSLINE_PARAMETERS, std::pair< double, TRANSLINE_STATUS > > & TRANSLINE_CALCULATION_BASE::GetAnalysisResults ( )

inherited

Gets the output parameters following analysis.

Definition at line 36 of file transline_calculation_base.cpp.

References m_analysisStatus, and SetAnalysisResults().

◆ GetParameter()

double TRANSLINE_CALCULATION_BASE::GetParameter ( const TRANSLINE_PARAMETERS aParam ) const

inlineinherited

Gets the given calculation property.

Definition at line 121 of file transline_calculation_base.h.

References m_parameters.

◆ GetParameterRef()

double & TRANSLINE_CALCULATION_BASE::GetParameterRef ( const TRANSLINE_PARAMETERS aParam )

inlineinherited

Adds a constant to the given parameter.

Definition at line 124 of file transline_calculation_base.h.

References m_parameters.

Referenced by MinimiseZ0Error1D().

◆ GetSynthesisResults()

std::unordered_map< TRANSLINE_PARAMETERS, std::pair< double, TRANSLINE_STATUS > > & TRANSLINE_CALCULATION_BASE::GetSynthesisResults ( )

inherited

Gets the output parameters following synthesis.

Definition at line 44 of file transline_calculation_base.cpp.

References m_synthesisStatus, and SetSynthesisResults().

◆ InitProperties()

void TRANSLINE_CALCULATION_BASE::InitProperties ( const std::initializer_list< TRANSLINE_PARAMETERS > & aParams )

protectedinherited

Initialises the properties used (as inputs or outputs) by the calculation.

Definition at line 28 of file transline_calculation_base.cpp.

References m_parameters.

Referenced by TRANSLINE_CALCULATION_BASE().

◆ line_angle()

void MICROSTRIP::line_angle ( )

private

Calculates microstrip length in radians.

Definition at line 386 of file common/transline_calculations/microstrip.cpp.

References ANG_L, TRANSLINE_CALCULATIONS::C0, EPSILON_EFF, FREQUENCY, TRANSLINE_CALCULATION_BASE::GetParameter(), M_PI, mur_eff, PHYS_LEN, and TRANSLINE_CALCULATION_BASE::SetParameter().

Referenced by Analyse().

◆ microstrip_Z0()

void MICROSTRIP::microstrip_Z0 ( )

private

Calculates the microstrip static impedance.

Definition at line 304 of file common/transline_calculations/microstrip.cpp.

References delta_q_cover(), delta_q_thickness(), delta_u_thickness(), e_r_effective(), EPSILONR, er_eff_0, filling_factor(), TRANSLINE_CALCULATION_BASE::GetParameter(), H, H_T, PHYS_WIDTH, TRANSLINE_CALCULATION_BASE::SetParameter(), T, w_eff, Z0, Z0_0, Z0_h_1, and Z0_homogeneous().

Referenced by Analyse().

◆ MinimiseZ0Error1D()

bool TRANSLINE_CALCULATION_BASE::MinimiseZ0Error1D	(	TRANSLINE_PARAMETERS	aOptimise,
		TRANSLINE_PARAMETERS	aMeasure )

protectedinherited

minimizeZ0Error1D

Tries to find a parameter that minimizes the error on Z0. This function only works with a single parameter. Calls Analyse several times until the error is acceptable.

This function does not change Z0 / Angl_L

Parameters

aOptimise	Parameter to optimise
aMeasure	The parameter to measure / optimise against

Returns: true if error < MAX_ERROR, otherwise false

Definition at line 65 of file transline_calculation_base.cpp.

References Analyse(), ANG_L, TRANSLINE_CALCULATIONS::C0, EPSILON_EFF, FREQUENCY, GetParameter(), GetParameterRef(), m_maxError, M_PI, PHYS_LEN, and SetParameter().

Referenced by COUPLED_MICROSTRIP::Synthesize(), COUPLED_STRIPLINE::Synthesize(), MICROSTRIP::Synthesize(), and STRIPLINE::Synthesize().

◆ MinimiseZ0Error2D()

bool TRANSLINE_CALCULATION_BASE::MinimiseZ0Error2D	(	TRANSLINE_PARAMETERS	aParam1,
		TRANSLINE_PARAMETERS	aParam2 )

protectedinherited

minimizeZ0Error2D

Tries to find the parameters that minimizes the error on Z_Diff. This function only works with two parameters. Calls Analyse several times until the error is acceptable. While the error is unacceptable, changes slightly the parameter.

This function does not change Z0 / Angl_L

Parameters

aParam1	First parameter to optimise
aParam2	Secpmd parameter to optimise

Returns: true if error < MAX_ERROR, otherwise false

◆ mur_eff_ms()

void MICROSTRIP::mur_eff_ms ( )

private

Calculates the effective magnetic permeability.

Definition at line 377 of file common/transline_calculations/microstrip.cpp.

References TRANSLINE_CALCULATION_BASE::GetParameter(), H, MUR, mur_eff, and PHYS_WIDTH.

Referenced by Analyse().

◆ sech()

static double TRANSLINE_CALCULATION_BASE::sech ( const double x )

inlinestaticprotectedinherited

Calculates sech of the given argument.

Definition at line 214 of file transline_calculation_base.h.

Referenced by COUPLED_STRIPLINE::calcSingleStripImpedances().

◆ SetAnalysisResult()

void TRANSLINE_CALCULATION_BASE::SetAnalysisResult	(	TRANSLINE_PARAMETERS	aParam,
		const double	aValue,
		const TRANSLINE_STATUS	aStatus = TRANSLINE_STATUS::OK )

protectedinherited

Sets an analysis result.

Definition at line 51 of file transline_calculation_base.cpp.

References m_analysisStatus.

Referenced by COUPLED_MICROSTRIP::SetAnalysisResults(), COUPLED_STRIPLINE::SetAnalysisResults(), MICROSTRIP::SetAnalysisResults(), STRIPLINE::SetAnalysisResults(), and COUPLED_MICROSTRIP::SetSynthesisResults().

◆ SetAnalysisResults()

void MICROSTRIP::SetAnalysisResults ( )

overrideprivatevirtual

Sets the output values and status following analysis.

Implements TRANSLINE_CALCULATION_BASE.

Definition at line 81 of file common/transline_calculations/microstrip.cpp.

References ANG_L, ATTEN_COND, ATTEN_DILECTRIC, EPSILON_EFF, TRANSLINE_CALCULATION_BASE::GetParameter(), OK, PHYS_LEN, PHYS_WIDTH, TRANSLINE_CALCULATION_BASE::SetAnalysisResult(), SKIN_DEPTH, TS_ERROR, UNIT_PROP_DELAY, WARNING, and Z0.

◆ SetParameter()

void TRANSLINE_CALCULATION_BASE::SetParameter	(	const TRANSLINE_PARAMETERS	aParam,
		const double	aValue )

inlineinherited

Sets the given calculation property.

Definition at line 118 of file transline_calculation_base.h.

References m_parameters.

Referenced by COUPLED_STRIPLINE::Analyse(), STRIPLINE::Analyse(), COUPLED_MICROSTRIP::attenuation(), MICROSTRIP::attenuation(), COUPLED_STRIPLINE::calcZ0EvenMode(), COUPLED_STRIPLINE::calcZ0OddMode(), MICROSTRIP::dispersion(), MICROSTRIP::line_angle(), MICROSTRIP::microstrip_Z0(), MinimiseZ0Error1D(), COUPLED_MICROSTRIP::syn_fun(), COUPLED_MICROSTRIP::synth_width(), COUPLED_MICROSTRIP::Synthesize(), COUPLED_STRIPLINE::Synthesize(), MICROSTRIP::Synthesize(), and COUPLED_MICROSTRIP::Z0_dispersion().

◆ SetSynthesisResult()

void TRANSLINE_CALCULATION_BASE::SetSynthesisResult	(	TRANSLINE_PARAMETERS	aParam,
		const double	aValue,
		const TRANSLINE_STATUS	aStatus = TRANSLINE_STATUS::OK )