In this homework, you are supposed to design a WBFM generator using Armstrong method. The required WBFM should be able to transmit an audio signal of bandwidth 50Hz to 4kHz. Design an Armstrong indirect FM modulator to generate an FM signal with carrier 100 MHz and Af = 200 kHz. A narrowband FM generator with fe = 100 kHz and Af = 10 Hz is available. Only frequency tripplers are available as frequency multipliers. In addition, an oscillator with adjustable frequency from 22 to 26 MHz is also available for mixing, along with bandpass filters of any specification. Show your work to get full credit (labelled block diagram, complete calculations for local oscillator frequency etc.).

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter13: Transmission Lines: Transient Operation
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Question 1
In this homework, you are supposed to design a WBFM generator using Armstrong method. The
required WBFM should be able to transmit an audio signal of bandwidth 50HZ to 4kHz. Design an
Armstrong indirect FM modulator to generate an FM signal with carrier 100 MHz and Af 200 kHz.
A narrowband FM generator with fe = 100 kHz and 4f = 10 Hz is available. Only frequency tripplers
are available as frequency multipliers. In addition, an oscillator with adjustable frequency from 22 to
26 MHz is also available for mixing, along with bandpass filters of any specification. Show your work
to get full credit (labelled block diagram, complete calculations for local oscillator frequency etc.).
Transcribed Image Text:Question 1 In this homework, you are supposed to design a WBFM generator using Armstrong method. The required WBFM should be able to transmit an audio signal of bandwidth 50HZ to 4kHz. Design an Armstrong indirect FM modulator to generate an FM signal with carrier 100 MHz and Af 200 kHz. A narrowband FM generator with fe = 100 kHz and 4f = 10 Hz is available. Only frequency tripplers are available as frequency multipliers. In addition, an oscillator with adjustable frequency from 22 to 26 MHz is also available for mixing, along with bandpass filters of any specification. Show your work to get full credit (labelled block diagram, complete calculations for local oscillator frequency etc.).
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