Basic Qualification · B-006 Feedlines and antenna systems · B-006-008-005
Adding a series inductance to an antenna would:
- Aincrease the resonant frequency
- Bincrease its useful bandwidth
- Creduce atmospheric noise pickup
- Ddecrease the resonant frequency
Correct answer: D — decrease the resonant frequency. From the official ISED question bank, verified word for word.
Why
Adding a series inductance to an antenna acts like adding weight to a spring, making the system slower to oscillate and therefore lowering the resonant frequency. The full explanation — and one for every question — is in Pro.
Practise this section
Feedlines and antenna systems is section B-006 of the Basic exam: Getting the signal out: antennas, feedlines, SWR, baluns, matching, and why antenna length depends on frequency.
Drill B-006 — free, no account