SATELLITE COMMUNICATION QUIZ

Collects very weak signals from a broadcast satellite

Helical antenna

TWT

Satellite dish

LNA

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Is the geographical representation of a satellite antenna radiation pattern

Region

Earth

Spot

Footprint

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The smallest beam of a satellite antenna radiation pattern

Global beam

Hemispheric beam

Zone beam

Spot beam

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A satellite batter has more power but lighter.

Hydrogen

Leclanche

Magnesium

Lithium

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What is the local oscillator (mixer) frequency of the satellite with an uplink frequency in GHz band?

3500 MHz

4500 MHz

2555 MHz

2225 MHz

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Most mobile satellite array uses ___________ in transforming 50 to 150 Ω impedance.

Microstrip tapers

Quarter-wavelength transformer

Stub

Balun

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What circuit is responsible in activating and deactivating adjacent antenna elements in a mobile satellite array?

Divider/combiner

Radial combiner

Radial multiplexer

Radial divider

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Satellite engine uses

Liquid fuel

Solar jet

Jet propulsion

Ion propulsion system

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The most common device used as an LNA is

Zener diode

Tunnel diode

Shockley diode

IMPATT

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The radiation patterns of earth coverage antennas have a beamwidth of approximately

35˚

17˚

5˚

21˚

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