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What type of antenna is used in GPS systems?(a) Yagi antenna(b) Helical array antenna(c) Loop antenna(d) Parabolic antenna |
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Answer» Right choice is (b) Helical array antenna The best explanation: The GPS antenna array is formed by an inner quad helices encircled by a ring of eight outer helices that provide near equal power to all terrestrial users. The helical antenna is optimum since circular polarization is least affected by weather and atmosphere. |
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