Discussion
What effect does an electrically short antenna's reactance have on matching?
Answer: C
Below resonance a dipole or monopole looks strongly capacitive, so a series loading coil is added to cancel the reactance and bring the antenna to resonance. That is why mobile whips carry a visible coil. The coil has loss of its own, which combines with a small radiation resistance to give poor efficiency and a very narrow bandwidth. A reactance is by definition not resistive, and only at resonance does it vanish.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development