高頻工數(shù)軟件微機(jī)復(fù)旦電子線路

教教數(shù)學(xué)定yF(x)F(at)aF(t)F[f1(t)f2(t)]F[f1(t)]F[f2 非 件不滿足疊加定i(v)Ise非線性無(wú)源器直流電導(dǎo)、交流電導(dǎo)和平均電Ig Q gV gV

指數(shù)函數(shù)（晶體管平方律函數(shù)（場(chǎng)效應(yīng)管冪級(jí)數(shù)if(v)f(VQ)

f'(vQ)

(vVQ)

f"(vQ)

(vV

QQiaa(vV)aV vVQVsmiaa(vV)a(vV)2i iaa costaV2cos2

...... cos2t1(1cos cos3t1(3costcos4cos4t1(32cos2t1cos

正弦波通過(guò)非線性系統(tǒng)的結(jié)正弦信號(hào)經(jīng)過(guò)非線性電路后產(chǎn)生的會(huì)產(chǎn)生新的諧波每個(gè)奇次分量諧每個(gè)偶次分量諧直直流分量和所有分段線性（折線）近似分段線 型應(yīng)二極管近似

VcV余弦脈沖電流數(shù)學(xué)表達(dá)icI0I1m tI2mcos tI3mcos t

c

(

(1cosc

I1m

csinc(1cosc

imax1(c

2sinnccosc2nsinccos

(c c

(1cos)n(n2

分解系數(shù)圖α1/iiE i

th(x)1iE1IsiE1Is11)iE2Is2qVBEqVBE1)Is2e seq(VBE1VBE2)iiii )iZkxk)E 1e2Z1Z

i

E

ikth(2

雙曲函數(shù)th(x)1e21e2iiE1iEi-V26mV,Z1,th(Z

Z, 2KT 諧波分為什Gilbert乘法 i

iii

i4i3

iC(i1i3)(i2i4)(i1i2)(i42ix)V2ix)V 04K2T y乘法器的頻率變換作XXcoscostcost1[cos()tcos(1221212 vVQV1mcos1tV2mcos2tVQv1if(v)

f(V)f'(vQ)(vV)

f"(vQ)(vV

f(V)

f'(vQ)

v)

f"(vQ)(vv

2a(vv) 2 p1p,qpqya(xif

v)

f'(vQv1) f"(vQv1)v

時(shí)變參量小信號(hào)放大電時(shí)變參量小信號(hào)放大電vVQV1m 1tV2m2tVQv1v1

f'(VQ 1pqq

if(VQv1)f'(VQ 12與普遍情況p,q 12與普遍情況p,qpq2vVQV1mcos1tV2mcos2tVQv1v1v2,VQ二極

v10,igDv2p1p1pqp,qpq與時(shí)變小信號(hào)電2 igDS1(1t)(v1v2)gDS1(1t)v1gDS1 p1p0,1,3,.....,qp0,1,2,4,.....,q二極管平衡電i1gDS1(1t)v1gDS1(1t)v2i2gDS1(1t)v1gDS1(1t)v2iLi1i22gDS1(1t)v2p1

igDS1(1t)(v1v2)gDS1(1t)v1gDS1p1