1. What does an amplifier do and why is one needed in a radio system? [3 marks]
2. What is the purpose of a mixer? Include a discussion of sidebands in your answer. [3 marks]
3. Compare and contrast the multiplexing techniques CDMA and FDMA in the area of wireless networking? [4 marks]
4. 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
