Find the far-field condition of a satellite dish antenna of dimension 60 cm operating at 12 GHz.

The answers according to the books are 26.36 GHz, 1.151 cm, 4.604 x 10^9 m/s, 19.55 x 10^6 m/s

A parabolic dish antenna has efficiency 85% and aperture area 3m². At afrequency of 12.85 GHz, what is its gain?(     need handwritten only ,otherwise downvote.)

give a short explanation

A pyramidal horn antenna is operating at 200 MHz and has a power gain of 320 and width of 10 cm. Estimate the aperture height.

A 0.48520λ0 dipole antenna is made to work at 4 GHz. The antenna is then connected to a 12 V voltage source which has an internal resistance of 25 Ω) a) Make a diagram of the above system, b) Is an impedance matching circuit needed? If yes, where should the impedance circuit be inserted and make a diagram of the system with the adjusting circuit, c) How many cm is the length of the dipole antenna above, d) How much power is emitted when not using the adjusting circuit and e) How much power is emitted when using the adjusting circuit. Solve subparts D,E max 20 minutes ASAP

A C-band radar with an antenna 1.8m in radius transmits 60kw at 6 GHz. If the minimum detectable power is 0.5mw, for a target cross-section of 5msq, Calculate the maximum range in meters Assume the effective area of the antenna is 80% of the actual area.