Title :
The time-domain paradigm in microwave nonlinear simulation
Author :
Brazil, Thomas J.
Author_Institution :
Sch. of Electr., Electron. & Commun. Eng., Univ. Coll. Dublin, Dublin, Ireland
Abstract :
Microwave and RF engineers have historically preferred a frequency-domain description of devices, components, circuits and systems, and almost always do so when linear operation can be assumed. Even when there are parts of a subsystem that unavoidably require a nonlinear description in terms of the time-domain, the strategy for simulation usually attempts to blend the frequency-domain and time-domain perspectives, such as in Harmonic Balance and its many variations. Nevertheless, because of its power and generality, there are situations when a purely time-domain approach may be preferable, recognising at the same time the challenges involved in converting what may be a naturally a frequency-domain representation of a circuit block into a convenient and useful form for time-domain usage. This paper will review the challenges involved and tackle some of the perhaps unwarranted and negative myths about adopting a time-domain approach in high frequency non-linear simulation. Examples will be provided to illustrate the potential of adopting a time-domain paradigm.
Keywords :
frequency-domain analysis; microwave circuits; time-domain analysis; frequency nonlinear simulation; frequency-domain representation; linear operation; microwave nonlinear simulation; nonlinear description; time-domain paradigm; time-domain usage; Convolution; Integrated circuit modeling; Microwave circuits; Time-domain analysis; Time-frequency analysis; convolution; nonlinear; simulation time-domain; transient;
Conference_Titel :
Wireless and Microwave Technology Conference (WAMICON), 2014 IEEE 15th Annual
Conference_Location :
Tampa, FL
DOI :
10.1109/WAMICON.2014.6857807