WHAT DOES AN AMPLIFIER DO AND WHY IS ONE NEEDED IN A RADIO SYSTEM?

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WHAT DOES AN AMPLIFIER DO AND WHY IS ONE NEEDED IN A RADIO SYSTEM?

Task

What does an amplifier do and why is one needed in a radio system? [3 marks]

What is the purpose of a mixer? Include a discussion of sidebands in your answer. [3 marks]

Compare and contrast the multiplexing techniques CDMA and FDMA in the area of wireless networking? [4 marks]

A local engineering group ask you to present the merits of different antenna, such as yagi, horn, and celluar antennas. Research these technologies in details and pay specific attention to how they are used as well their strengths and weakness. Provide an opinion regarding which antenna types will become the dominant players in the future of medium- and long-distance wireless links. Please submit power point slides in your answer. [6 marks]

Rationale

Your task in this assessment is to prepare a response to each of the questions. Please refer to the marking guide when preparing your response to see what criteria and standards will be used to assess your work and your progress towards Learning Outcomes 1, 2 and 4.

Marking Criteria

Marks will be given using the following criteria

Correctness and completeness of the answers;
Inclusion of appropriate figures, where applicable;
Clarity of explanation;
Correctness of spelling, grammar, and format of the submission;
Sufficient references and use of APA referencing style

The following rubrics will be used to mark assignment 1:

Question

HD (85%-10%)

DI (75% - 84%)

CR (65% - 74%)

PS (50% - 64%)

Q 1 – Q 3

Maximum marks
10
Learning Outcome 1, 2

The answer is correct, and complete. Comprehensive explanation is provided. Figures (if appropriate) were used. Appropriate examples are used. No grammatical or spelling mistake.

The answer is correct and a detailed explanation is provided. References are used. No/only a few grammatical or spelling mistakes.

The answer is correct, but the explanation is not complete. Very few references are used and not formatted appropriately.

The answer is correct but not complete and only adequate explanation is provided. No references are used. There are grammatical errors and spelling mistakes.

Q 4

Maximum marks
4

Learning Outcome 4

The answer is correct, and complete. All possibilities were considered using appropriate assumptions. Comprehensive explanation is provided with appropriate reference. No grammatical or spelling mistake.

The answers were correct, detailed explanation were given with the omission of few possibilities and assumptions.

The answers are partly correct. only considered from one point of view.

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