TaperedLineMatch (Tapered Line Match)

Symbol

Summary

A tapered line transformer network provides a broadband highpass frequency response between the input (pin 1) and output (pin 2) ports. The source or load terminations must be unequal resistances. The network consists of multiple transmission line sections to approximate a tapered line.

Parameters

Name	Description	Unit	Default
Fp	Frequency at lower passband edge (Response is Highpass)	GHz	1
Rg	Input impedance	Ohms	50
RL	Load impedance	Ohms	100
ResponseType	Type of frequency response	None	Exponential Taper
Rmax	Maximum voltage reflection coefficient	dB	-20
N	Number of TLine Sections per wavelength	None	0

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 tapered transformer was designed to match a 100 Ohm load impedance to a 50 ohm source impedance with a lower passband edge of 1GHz. The maximum reflection coefficient was -20 dB, with an exponential taper. The design used N=20 sections per wavelength.

Tapered Transformer

References

1. Thomas R. Cuthbert, Jr., Circuit Design Using Personal Computers , John Wiley & Sons, New York, 1983.
2. R. Levy, "Explicit formulas for Chebyshev impedance-matching networks," Proc. IEEE , pp. 1099-1106, June 1964.
3. R. M. Cottee and W. T. Joines, "Synthesis of lumped and distributed networks for impedance matching of complex loads," IEEE Trans. Circuits Syst. , pp. 316-329, May 1979.