Title :
Gradient-based optimization of filters using FDTD software
Author :
Kozakowski, Piotr ; Mrozowski, Michai
Author_Institution :
Dept. of Electron. Informatics & Telecommun., Tech. Univ. Gdansk, Poland
Abstract :
This letter discusses gradient optimization of band-pass filters using electromagnetic simulation software based on the finite difference-time domain algorithm. It is shown that even high-Q-factor circuits can be optimized in acceptable time if robust digital signal processing techniques that take into account signal dynamics are used to predict the frequency behavior of a structure from relatively short sample sequences.
Keywords :
Q-factor; band-pass filters; cavity resonator filters; circuit CAD; circuit optimisation; finite difference time-domain analysis; gradient methods; resonator filters; FDTD software; band-pass filters; dual-mode cylindrical cavity filter; electromagnetic simulation software; finite difference-time domain algorithm; frequency behavior; gradient-based optimization; high-Q-factor circuit optimization; robust digital signal processing techniques; scattering parameters; short sample sequences; signal dynamics; three-resonator H-plane filter; Band pass filters; Circuit simulation; Digital signal processing; Finite difference methods; Frequency; Robustness; Signal processing; Signal processing algorithms; Software algorithms; Time domain analysis;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2002.804561
