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Select the correct statement(s) regarding transmit beamwidth. a. The higher the frequency, the narrower the beamwidth...

Select the correct statement(s) regarding transmit beamwidth.

a. The higher the frequency, the narrower the beamwidth

b. The larger the antenna dimension (e.g., diameter for a parabolic antenna), the narrower the beamwidth

c. The smaller the signal wavelength, the narrower the beamwidth

d. All are correct

Select the correct statement(s) regarding a satellite's TWTA (Traveling Wave Tube Amplifier).

a. The TWTA amplifies the aggregated channels coming from the multiplexer, and sends this amplified broadband signal directly to the transmit antenna

b. Each transponder has a TWTA which amplifies the transponder channel

c. A TWTA amplifies the incoming signal directly from the receive antenna. The TWTA is also termed an LNA.

d. All of the statement(s) are correct.
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