Discussion
What happens to the beamwidth of an aperture as the frequency is raised?
Answer: A
Beamwidth depends on the aperture measured in wavelengths, so raising the frequency makes the same dish electrically larger and the beam narrower in proportion. Gain rises as the square of frequency for the same reason. The effect applies in both planes together for a circular aperture. This single relationship explains why high resolution imaging drives systems to ever higher frequencies, and why surface tolerance eventually stops them going further.
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