What is required to make a scanning array of point sources

Assignment Help Basic Computer Science

Reference no: EM133282325

Questions -

1. What is required to make a scanning array of point sources, i.e. array which has a maximum field in an arbitrary direction?

2. Design a log-periodic dipole array with 7dBi gain and 4 to 1 bandwidth, use figure 4.27 (Lec4 Notes).

3. Consider non-ideal relector surface with small deviations from ideal surface. Find the analytical estimate of reduction in antenna gain due to the surface errors.

4. Determine the required parabolic dih diameter of a 4 GHz (C-band) earth station antenna if its system temperature =100K for an S/N ratio of 20dB and bandwidth B=30 MHz with satellite transponder power 5W, satellite parabolic dish diameter 2m. Assume 50% antenna efficiency.

Reference no: EM133282325

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