Recent content by dan_smith

Hello, Yes this is the article from which the example came from. you are correct regarding the wolfram alfa calculation.assuming that their numbers are wrong i tried to use matlabs commands for g=chebyshevT([1 ,2, 3 ,4] , x) %first kind [ x, 2*x^2 - 1, 4*x^3 - 3*x, 8*x^4 - 8*x^2 + 1]...

if x_0=1.853 then T_0=1 T_1=1.853 T_2=2*1.853*1.853-1 its not the same numbers that they get in the article Thanks

Hello i need to recreate these chebychev coefficents given the initial value of X_0=1.853 as shown in the photo bellow. i have tried to follow the iterrative algorithm shown in the photo bellow. please help me understand where did i go wrong? thanks

ok they pick combinations of C1 and C2 , for what purpose? in the solution they say that at minimum point: theta=pi/2 C_min=-21dB=0.089125 C=C_1*sin(3/2*pi)+(C_2-C_1)sin(pi/2)=-C_1+C_2-C_1=C_2-2*C_1 eq1. 0.089125=C_2-2*C_1 C_max=-19dB=0.1122there are lots of combinations for C_1 and C_2 to...

Hello , in the attached photo there is a an examle in which we want a 20dB coupling with 1dB ripple, so Cmax is -19 and Cmin is -21. in the marked table in red they do a "trial and error"' itterations what kind of itterations?, why they pick each time a different C_max? C max is -19 dB which...

student of electrical engeering