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Which one of the following terms does not apply to

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9. Which one of the following terms doesnotapply to the Yagi-Uda array?a. Good bandwidthb. Parasitic elementsc. Folded dipoled. High gain
10. An antenna that is currently polarized us the
11. The standard reference antenna for the directive gain is the
12. Top loading is sometimes used with an antenna in order to increase its
13. Cassegrain feed is used with a parabolic reflector toa. increase the gain of the systemb. increase the beamwidth of the systemc. reduce the size of the main reflectord. allow the feed to be placed at a convenient point
14. Zoning is used with a dielectric antenna in order to
15. A helical antenna is used for satellite tracking because of its
16. The discone antenna is
17. One of the following isnotan omnidirectional antenna:a. Half-wave dipoleb. Log-periodicc. Disconed. Marconi
WAVEGUIDES, RESONATORS AND COMPONENTS1. When an electromagnetic waves are propagated in a waveguide
2. Waveguides are used mainly for microwave signals because

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