Time-domain Representation of Passband Scattering Parameters

TL;DR

This paper introduces a method to convert frequency-domain RF network data into a time-domain impulse response, enabling efficient inclusion of frequency-dispersive networks in transient simulations.

Contribution

It presents a simple, accurate approach to represent passband scattering parameters in the time domain for use in baseband transient simulations.

Findings

Enables efficient time-domain simulation of frequency-dispersive networks.

Provides a straightforward way to include RF frequency-domain data in transient analysis.

Improves accuracy of time-domain modeling of passband networks.

Abstract

This paper presents a simple and accurate method for the inclusion of linear, time-invariant (LTI) networks, described by RF frequency-domain data, within equivalent baseband time-domain simulations. The time-domain representation is formulated as an equivalent baseband discrete-time impulse response, which may be convolved with the equivalent baseband form of the input signal, to obtain the corresponding equivalent baseband output. This allows networks which are most accurately described in the frequency domain, such as frequency-dispersive transmission lines, to be efficiently included as part of a transient time-domain simulation.