矩形贴片天线Matlab仿真

矩形贴片天线Matlab仿真l = input('Patch length(cm)=').*1e-2; % Patch length befor strain w = input('Patch width(cm)=').*1e-2; % Patch width befor strain h = input('Substrate thickness(mm)=').*1e-3; % Substrate thickness s = input('Strain(%)='); % Strain pr = input('Substrate poisson ratio='); % Substrate poisson ratio eper = ((per+1)./2)+(((per-1)./2).*((1+12.*(h./w)).^-0.5)); % Effective permittivity befor strain dl = (0.412.*h).*(((eper+0.3).*((w/h)+0.264))./((eper-0.258).*((w./h)+0.8))); % To calculate effective length befor strain le = l+(2.*dl); % Effective length befor strain fr = c./(2.*le.*sqrt(eper)); % Frequency before strain % After strain in the direction of antenna length hs = h.*(1-pr.*s); % Substrate thickness after strain ls = l.*(1+s); % Patch length after strain % After strain in the direction of antenna width hs = h.*(1-pr.*s); % Substrate thickness after strain ls = l.*(1-pr.*s); % Patch length after strain ws = w.*(1+s); % Patch width after strain epers = ((per+1)./2)+(((per-1)./2).*((1+12.*(hs./ws)).^-0.5)); % Effective permittivity after strain dls = (0.412.*hs).*(((epers+0.3).*((ws/hs)+0.264))./((epers-0.258).*