MATLAB仿真天线阵代码

天线阵代码一、clcclearallf=3e9;N1=4;N2=8;N3=12;a=pi/2;%馈电相位差i=1;%天线电流值lambda=(3e8)/f;%lambda=c/f波长d=lambda/2;beta=2.*pi/lambda;W=-2*pi:0.001:2*pi;y1=sin((N1.*W./2))./(N1.*(sin(W./2)));%归一化阵因子y1=abs(y1);r1=max(y1);y2=sin((N2.*W./2))./(N2.*(sin(W./2)));%归一化阵因子y2=abs(y2);r2=max(y2);y3=sin((N3.*W./2))./(N3.*(sin(W./2)));%归一化阵因子y3=abs(y3);r3=max(y3);%归一化阵因子绘图程序,figure(1)subplot(311);plot(W,y1);gridon;%绘出N=4等幅等矩阵列的归一化阵因子xlabel('f=3GHz,N=4,d=1/2波长,a=π/2')subplot(312);plot(W,y2);gridon;%绘出N=8等幅等矩阵列的归一化阵因子xlabel('f=3GHz,N=8,d=1/2波长,a=π/2')subplot(313);plot(W,y3);gridon;%绘出N=12等幅等矩阵列的归一化阵因子xlabel('f=3GHz,N=12,d=1/2波长,a=π/2')%---------------------%只有参数N改变的天线方向图t=0:0.01:2*pi;W=a+(beta.*d.*cos(t));z1=(N1/2).*(W);z2=(1/2).*(W);W1=sin(z1)./(N1.*sin(z2));%非归一化的阵因子K1K1=abs(W1);%----------------------W=a+(beta.*d.*cos(t));z3=(N2/2).*(W);z4=(1/2).*(W);W2=sin(z3)./(N2.*sin(z4));%非归一化的阵因子K2K2=abs(W2);%-------------------------W=a+(beta.*d.*cos(t));z5=(N3/2).*(W);z6=(1/2).*(W);W3=sin(z5)./(N3.*sin(z6));%非归一化的阵因子K3K3=abs(W3);%--------------------绘图函数figure(2)subplot(131);polar(t,K1);xlabel('f=3GHz,N=4,d=1/2波长,a=π/2');subplot(132);polar(t,K2);xlabel('f=3GHz,N=8,d=1/2波长,a=π/2');subplot(133);polar(t,K3);xlabel('f=3GHz,N=12,d=1/2波长,a=π/2');%----------------------%只有阵列单元方向角a改变的天线方向图N4=10;d1=lambda/4;a1=0;a2=pi/2;a3=pi/2+pi/10;A=a1+(beta.*d1.*cos(t));x1=(N4/2).*(A);x2=(1/2).*(A);A1=sin(x1)./(N4.*sin(x2));%非归一化的阵因子K4K4=abs(A1);%---------------------------B=a2+(beta.*d1.*cos(t));y_1=(N4/2).*(B);y_2=(1/2).*(B);B1=sin(y_1)./(N4.*sin(y_2));%非归一化的阵因子K5K5=abs(B1);%----------------------------C=a3+(beta.*d1.*cos(t));v1=(N4/2).*(C);v2=(1/2).*(C);C1=sin(v1)./(N4.*sin(v2));%非归一化的阵因子K6K6=abs(C1);%--------------------------绘图函数figure(3)subplot(131);polar(t,K4);xlabel('f=3GHz,N=10,d=1/4波长,a=0');subplot(132);polar(t,K5);xlabel('f=3GHz,N=10,d=1/4波长,a=π/2');subplot(133);polar(t,K6);xlabel('f=3GHz,N=10,d=1/4波长,a=π/2+π/10');%----------------------------------------------------------------------%只有阵列单元间隔d改变的天线方向图N5=20;d2=lambda/4;d3=lambda/2;d4=0.7*lambda;a4=pi/2;D=a4+(beta.*d2.*cos(t));p1=(N5/2).*(D);p2=(1/2).*(D);D1=sin(p1)./(N5.*sin(p2));%非归一化的阵因子K7K7=abs(D1);%------------------------------E=a4+(beta.*d3.*cos(t));q1=(N5/2).*(E);q2=(1/2).*(E);E1=sin(q1)./(N5.*sin(q2));%非归一化的阵因子K8K8=abs(E1);%-------------------------------F=a4+(beta.*d4.*cos(t));r_1=(N5/2).*(F);r_2=(1/2).*(F);F1=sin(r_1)./(N5.*sin(r_2));%非归一化的阵因子K9K9=abs(F1);%-----------------------绘图函数figure(4)subplot(131);polar(t,K7);xlabel('f=3GHz,N=20,d=1/4波长,a=π/2');subplot(132);polar(t,K8);xlabel('f=3GHz,N=20,d=1/2波长,a=π/2');subplot(133);polar(t,K9);xlabel('f=3GHz,N=20,d=0.7波长,a=π/2');%--------------------------------------------------------------------------%---------------------------------------3D-天线方向图n_tehta=130;%--------------------采样视角点的仰角n_phi=130;%--------------------采样点的方向角[tehta,phi]=meshgrid(eps:pi./(n_tehta-1):pi,...%meshgrid函数为矩形区域的设定范围是epftehtaπ0phi2π0:2*pi./(n_phi-1):2*pi);t3=tehta;%-------------只有参数N改变的天线方向3D图M=a+(beta.*d.*cos(t3));%----N1=4;N2=8;N3=12;z_1=(N1/2).*(M);z_2=(1/2).*(M);M1=sin(z_1)./(N1.*sin(z_2));%非归一化的阵因子K1K_1=abs(M1);radio_1=K_1;X1=radio_1.*sin(tehta).*cos(phi);Y1=radio_1.*sin(tehta).*sin(phi);Z1=radio_1.*cos(tehta);%-----------------------------------M=a+(beta.*d.*cos(t3));z_3=(N2/2).*(M);z_4=(1/2).*(M);M2=sin(z_3)./(N2.*sin(z_4));%非归一化的阵因子K2K_2=abs(M2);radio_2=K_2;X2=radio_2.*sin(tehta).*cos(phi);Y2=radio_2.*sin(tehta).*sin(phi);Z2=radio_2.*cos(tehta);%-------------------------------------M=a+(beta.*d.*cos(t3));z_5=(N3/2).*(M);z_6=(1/2).*(M);M3=sin(z_5)./(N3.*sin(z_6));%非归一化的阵因子K3K_3=abs(M3);radio_3=K_3;X3=radio_3.*sin(tehta).*cos(phi);Y3=radio_3.*sin(tehta).*sin(phi);Z3=radio_3.*cos(tehta);%------------------------------------3D绘图函数figure(5)surf(X1,Y1,Z1);%三维绘图函数surf，采用伪彩色表示曲面的高度camlightrightlightcolorbaraxisimagerotate3Dontitle('f=3GHz,N=4,d=1/2波长,a=π/2');figure(6)surf(X2,Y2,Z2);camlightrightlightcolorbaraxisimagerotate3Dontitle('f=3GHz,N=8,d=1/2波长,a=π/2');figure(7)surf(X3,Y3,Z3)camlightrightlightcolorbaraxisimagerotate3Dontitle('f=3GHz,N=12,d=1/2波长,a=π/2');%----------------------------------------------%--------------------只有阵列单元方向角a改变的天线方向图N4=10;d1=lambda/4;a1=0;a2=pi/2;a3=pi/2+pi/10;A_3d=a1+(beta.*d1.*cos(t3));x_1=(N4/2).*(A_3d);x_2=(1/2).*(A_3d);A_1=sin(x_1)./(N4.*sin(x_2));%非归一化的阵因子K4K_4=abs(A_1);radio_4=K_4;X4=radio_4.*sin(tehta).*cos(phi);Y4=radio_4.*sin(tehta).*sin(phi);Z4=radio_4.*cos(tehta);%-----------------------------------B_3d=a2+(beta.*d1.*cos(t3));y_1_3d=(N4/2).*(B_3d);y_2_3d=(1/2).*(B_3d);B_1=sin(y_1_3d)./(N4.*sin(y_2_3d));%非归一化的阵因子K5K_5=abs(B_1);radio_5=K_5;X5=radio_5.*sin(tehta).*cos(phi);Y5=radio_5.*sin(tehta).*sin(phi);Z5=radio_5.*cos(tehta);%------------------------------------C_3d=a3+(beta.*d1.*cos(t3));v_1=(N4/2).*(C_3d);v_2=(1/2).*(C_3d);C_1=sin(v_1)./(N4.*sin(v_2));%非归一化的阵因子K6K_6=abs(C_1);radio_6=K_6;X6=radio_6.*sin(tehta).*cos(phi);Y6=radio_6.*sin(tehta).*sin(phi);Z6=radio_