并聯諧振 B帶寬=1/(2*pi*r*c);Q=RWC=R/(1/WC)=R/(WL); 串聯諧振B帶寬=r/(2*pi*L);q=(1/(wc))/R=(wL)/R; Q=F0/B;B=F0/Q; 并聯的帶寬和串聯的帶寬