Dish antennas are a common type of antenna at high frequencies. (a) Explain the design and operation of dish antennas with the use of equations and diagrams. Discuss different types of dish antennas and identify the main advantages and disadvantages of each type. Identify the main trade-offs between different types of dish antennas and suggest ways to improve efficiency.

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QA3
Dish antennas are a common type of antenna at high frequencies.
(a)
Explain the design and operation of dish antennas with the use of
equations and diagrams. Discuss different types of dish antennas and
identify the main advantages and disadvantages of each type. Identify the
main trade-offs between different types of dish antennas and suggest
ways to improve efficiency.
(b)
With the aid of diagrams, explain the following three types of radiation
patterns and give examples of where each type is used:
(i)
(ii)
(i)
Isotropic
Omnidirectional
Directional
Transcribed Image Text:QA3 Dish antennas are a common type of antenna at high frequencies. (a) Explain the design and operation of dish antennas with the use of equations and diagrams. Discuss different types of dish antennas and identify the main advantages and disadvantages of each type. Identify the main trade-offs between different types of dish antennas and suggest ways to improve efficiency. (b) With the aid of diagrams, explain the following three types of radiation patterns and give examples of where each type is used: (i) (ii) (i) Isotropic Omnidirectional Directional
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