Discussion
What is the bandwidth penalty of a zoned lens?
Answer: A
Zoning relies on the fact that a delay differing by exactly one wavelength is equivalent to no difference at all, and that holds at only one frequency. Away from it the zones no longer align in phase and the aperture develops errors. Material dispersion is usually small over the bands concerned, step reflection is a secondary loss, and feed mismatch is a separate issue. Any technique that relies on a whole number of wavelengths is narrowband for the same reason.
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