___________ transfers energy from a primary to an adjacent secondary waveguide for energy traveling in the main guide in one direction only.
A. Microstrip
B. Pulse repetition frequency
C. Directional coupler
D. Stripline
Question 2
The series tee is often used for _____________.
A. a single antenna to be used for both transmission and reception
B. adjusting signal levels
C. physically reversing a directional coupler
D. impedance matching