Communications Systems Chapter 7 Test

Communications Systems Chapter 7 Test - 19-22 Draw a block...

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Antenna Input info (baseband signal) modulator Antenna Baseband Input Frequency out antenna Baseband input signal Communications Systems Chapter 7 Test 1. Name the three important characteristics for a radio transmitter: Frequency stability Quality of the output signal Reliability 2. Harmonic frequencies are radiated from a transmitter, along with unwanted energy at other frequencies known as __ spurious radiation . 3-9. Draw a block diagram of an AM transmitter using high level modulation: 10-17. Draw a block diagram of a Single Sideband transmitter using low level modulation: 18. What is the resonant frequency of a tank circuit with a 2 mH coil and a 500 pFd cap? 159.1549 khz
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Unformatted text preview: 19-22. Draw a block diagram of a synthesizer circuit: 23. A synthesizer circuit has a transmitter frequency of 25.6 MHz and a reference frequency of 400 KHz. What is the divider ratio? 64 24. A capacitor does not adjust in a linear fashion resulting in a _____ tracking error ______ in transmitters. 25-30. Draw a block diagram of an FM transmitter: 31. Large deviation FM transmitters often use a __ reactance ____ modulator. 32. A frequency multiplier is a tuned amplifier where the output is tuned to a __ harmonic frequency __ of the oscillator frequency. 33. What is the purpose of a buffer circuit? Isolate the effects of loading...
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Communications Systems Chapter 7 Test - 19-22 Draw a block...

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