Discussion
A Costas loop recovers the carrier phase by
Answer: B
The Costas arrangement runs two multipliers in quadrature and uses the product of their outputs as an error signal, which vanishes only when the reference is aligned with the signal. It locks without needing any transmitted carrier. Squaring and dividing is the squaring-loop alternative, which works but needs a divider and has a phase ambiguity. A pilot carrier is a different scheme entirely. And zero-crossing counting is a frequency measurement, not a phase-recovery method.
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