Title :
A searching method for optimal locations of decoupling capacitors based on electromagnetic field analysis by FDTD method
Author :
Hattori, Isao ; Kamo, Atsushi ; Watanabe, Takayuki ; Asai, Hideki
Author_Institution :
Fac. of Eng., Shizuoka Univ., Hamamatsu, Japan
Abstract :
This paper describes a searching method for positions of decoupling capacitors on the printed circuit board (PCB). In this method, first, the distributions of electromagnetic field between power and ground planes in the time domain are simulated, using FDTD method. Next, the distribution of Poynting vectors in the frequency domain is investigated, using fast Fourier transforms (FFT). Furthermore, this method finds the optimal location of decoupling capacitor so that the Poynting vector is the highest.
Keywords :
capacitors; circuit layout CAD; circuit optimisation; circuit simulation; electromagnetic field theory; fast Fourier transforms; finite difference time-domain analysis; frequency-domain analysis; printed circuit layout; time-domain analysis; FDTD method; FFT; PCB; decoupling capacitors; electromagnetic field analysis; electromagnetic field distributions; fast Fourier transform; frequency domain Poynting vector distribution; ground planes; optimal location searching method; power planes; printed circuit board; time domain simulation; Capacitors; Circuit noise; Circuit simulation; Electromagnetic analysis; Electromagnetic fields; Fast Fourier transforms; Finite difference methods; Frequency domain analysis; Modeling; Printed circuits;
Conference_Titel :
Electrical Performance of Electronic Packaging, 2002 IEEE 11th Topical Meeting on
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-7451-7
DOI :
10.1109/EPEP.2002.1057905
