To couple a coaxial line to a parallel wire line it is best to use-A-slotted lineB-balunC-directional couplerD-λ/4 transformer-B-balun

Question

To couple a coaxial line to a parallel wire line it is best to use-A-slotted lineB-balunC-directional couplerD-&lambda;/4 transformer-B-balun

APTITUDE CRACK · Accepted Answer

B balun A balun gives 4 : 1 impedance transformation.

Microwave Communication - Engineering