SingleStubMatch (Single-Stub Match)

Symbol

Summary

A single-stub matching network provides a narrowband bandpass frequency response between the input (pin 1) and output (pin 2) ports. The source or load terminations can be specified using either a lumped component approximation, a frequency independent complex impedance, or a Touchstone format S-parameter file.

Parameters

Name	Description	Unit	Default
F	Frequency at center	GHz	1
Zstub	Characteristic Impedance of stub line	Ohm	50
Zline	Characteristic Impedance of line between load and stub	Ohm	50
SourceType	Type of source impedance	None	Resistive
Rg	Source resistance	Ohms	50
Lg	Source inductance	nH	1
Cg	Source capacitance	pF	1
Zg	Source impedance	Ohms	50+j×50
SourceFile	Source S-parameter file name	None	ZSource.s1p
SourceFileSparm	Source S-parameter	None	"S(1,1)"
SourceImpType	Complex source impedance interpretation	None	Source Impedance
LoadType	Type of load impedance	None	Series RL
RL	Load resistance	Ohms	100
LL	Load inductance	nH	1
CL	Load capacitance	pF	1
ZL	Load impedance	Ohms	100-j*100
LoadFile	Load S-parameter file name	None	ZLoad.s1p
LoadFileSparm	Load S-parameter	None	"S(1,1)"
LoadImpType	Complex load impedance interpretation	None	Load Impedance

Palette

Impedance Matching

Available Automated-Assistants

Matching Assistant, Simulation Assistant, Yield Assistant, Display Assistant, Transformation Assistant

Matching Assistant Usage

For general information, refer to Matching Assistant.

Simulation Assistant Usage

For general information, refer to Simulation Assistant.

Yield Assistant Usage

For general information, refer to Yield Assistant.

Display Assistant Usage

For general information, refer to Display Assistant.

Example

A single-stub matching network was designed to match a Series RL (R=100 Ohms, L =1 nH) load impedance to a 50 ohm source impedance at a center frequency of 1 GHz. Choosing the configuration with an open-circuit stub yielded a design offering the results shown in the illustration below, Single-stub Matching Network.