射频放大器设计

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1、实验名称：射频放大器设计实验内容：射频三极管ATF-541M4设计2GHz工作条件绝对稳定最大增益放大电路，源阻抗和负载都是50欧姆，器件连接传输线特性阻抗50欧姆。实验结果：实验程序及程序结果：Z0=50;Y0=1/Z0;S11=-0.83321+j*0.064507;S21=1.3113+j*3.739;S12=0.039663+j*0.0049215;S22=-0.081666-j*0.015507;S221=-0.081666+j*0.015507;S111=-0.83321-j*0.064507;k=(1-(abs(S11))^2-

2、(abs(S22))^2+(abs(S11*S22-S12*S21))^2)/(2*abs(S12*S21));D=S11*S22-S12*S21;B1=1+(abs(S11))^2-(abs(S22))^2-(abs(D))^2C1=S11-S221*DB2=1+(abs(S22))^2-(abs(S11))^2-(abs(D))^2C2=S22-S111*DTMS=(B1-sqrt(B1^2-4*(abs(C1))^2))/(2*C1)TML=(B2-sqrt(B2^2-4*(abs(C2))^2))/(2*C2)ZMS=Z0*((1+T

3、MS)/(1-TMS))ZML=Z0*((1+TML)/(1-TML))Bs=2*Y0*abs(TMS)*(sqrt(1/(1-(abs(TMS))^2)))Ls=atan(Bs/Y0)Ls=atan(Bs/Y0)*180/piLMS=angle(TMS)*180/piY1=Y0+j*BsT1=(Y0-Y1)/(Y0+Y1)L1=angle(T1)*180/piLl=0.5*(180-LMS+180+L1)LML=angle(TML)*180/piBs1=2*Y0*abs(TML)*(sqrt(1/(1-(abs(TML))^2)))Y11=

4、Y0+j*Bs1Ls1=atan(Bs1/Y0)*180/piT11=(Y0-Y11)/(Y0+Y11)L11=angle(T11)*180/piLl1=0.5*(180-LML+180+L11)S21=1.3113+j*3.739;S12=0.039663+j*0.0049215;GTmax=abs(S21)/abs(S12)*(k-sqrt(k^2-1))GTmax=10*log10(92.0861)B1=1.6686C1=-0.8326+0.0519iB2=0.2856C2=-0.0427-0.1358iTMS=-0.9842-0.06

5、14iTML=-0.2760+0.8789iZMS=0.3508-1.5581iZML=3.1533+36.6085iBs=0.2372Ls=1.4867Ls=85.1804LMS=-176.4300Y1=0.0200+0.2372iT1=-0.9723-0.1640iL1=-170.4281Ll=183.0010LML=107.4375Bs1=0.0947Y11=0.0200+0.0947iLs1=78.0745T11=-0.8486-0.3584iL11=-157.1011Ll1=47.7307GTmax=92.0861GTmax=19.

6、6419>>107.4375Bs1=0.0947Y11=0.0200+0.0947iLs1=78.0745T11=-0.8486-0.3584iL11=-157.1011Ll1=47.7307GTmax=92.0861GTmax=19.6419稳定放大实验电路图：仿真结果：绝对稳定放大实验电路图：仿真结果：输入输出匹配网络实验电路图：仿真结果：