160 V 1.91 A Final Power Amp Reactance Modulator Carrier oscillator Frequency Mu

ID: 1812176 • Letter: 1

Question

160 V

1.91 A

Final

Power

Amp

Reactance

Modulator

Carrier

oscillator

Frequency

Multiplier

135 Vrms

72.9 W

4 V P-P

11.61 KHz

+/- 215 Hz / Vp-p

1.97593 MHz

1 doubler

2 triplers

The given diagram shows an FM transmitter.

(a) What is the total multiplication factor?

I believe that this is 2 * 3 * 3 = 18

(b) What is the carrier rest frequency at the antenna?

(d) What is the % of modulation?

(e) What is the modulation index?

(f) How many sideband pairs are in the radiated signal?

(g) What is the bandwidth of the radiated signal?

(h) What is the input power to the final power amplifier?

(i) What is the output power?

(j) What is the efficiency of the final power amplifier?

(k) How much power is in the carrier?

(l) How much total power is in the sidebands?

(m) If not already at 100 % modulation, what level of input signal would cause 100 % modulation?

160 V

1.91 A

wait

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