1.

What pulse duration is needed to produce 20 kJ of pulse energy with a 2 MW transmitter? If the transmitter duty cycle is 10%, at what rate may these pulses be produced?

2.

If the transmitter tube generates 20 kW of peak power, has a duty cycle of 0.2, and internal losses of 0.7 dB, what is the transmitter average power? If 15 kW of prime power are supplied to the transmitter, what is the transmitter efficiency? If the RF ohmic losses following the transmitter total 1.6 dB, and 28 kW of prime power are required by the radar for the previously-stated tube RF power output, what is the overall radar efficiency?

3.

What effective aperture area is needed to provide antenna gain of 40 dB at a frequency of 1.3 GHz (L band)? What area is needed at a frequency of 9.5 GHz (X band)?

4.

For a rectangular aperture, if an effective aperture area of 10 m ² is required, and 40-dB Taylor weighting is used in both the azimuth and elevation dimensions, and the antenna ohmic losses are 0.8 dB, what physical antenna area is needed? If the physical aperture is 3m high (elevation dimension), and the frequency is 3.3 GHz (S band), what are the beamwidths?

5.

If an FFOV array has 10,000 elements spaced by 0.59 ?, what is the broadside gain, neglecting antenna losses? If the array is square, and employs uniform illumination, what is the broadside...