Please help me to solve this problem C$$u $2(4$i$$m$)$:

D$$ng $$ th$$ Smith, h$$y thi$$t k$$ c$$c m$$ch ph$$i h$$p tr$$ kh$$ng sau. SV n$$p c$$c $$ th$$ Smith.

$($a$)$ Thi$$t k$2$ m$$ch d$$ng LC t$$i t$$n s$1$ GHz

$($b$)$ Thi$$t k$2$ m$$ch d$$ng stub