Advanced Qualification · A-007 Feedlines and matching · A-007-009-006
Which of the following is a major advantage of waveguide over coaxial cable for use at microwave frequencies?
- A Very low losses
- B Frequency response from 1.8 MHz to 24GHz
- C Easy to install
- D Inexpensive to install
Correct answer: A — Very low losses. From the official ISED question bank, verified word for word.
Why
At microwave frequencies, waveguides act like hollow metal pipes that guide radio waves with very low losses, meaning far less signal energy turns into heat compared to coaxial cable. The full explanation — and one for every question — is in Pro.
Practise this section
Feedlines and matching at the advanced level: transmission line theory, impedance transformation, stubs and matching networks.