A superheterodyne receiver is to operate in the frequency

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A superheterodyne receiver is to operate in the frequency range of 550 kHz-1650 kHz with the intermediate frequency of 450 kHz. The receiver is tuned to 700. The capacitance ratio R = C_max/C_min of the local oscillator would be—

1. 4.41
2. 2.1
3. 3
4. 9

Correct Option: A

Given that frequency range (550-1650) kHz, where 1650 kHz is maximum and 550 is minimum value
f_IF = 450 kHz
When the local oscillator frequency is kept higher, the maximum to minimum capacitance ratio required is

R =	C_max		2100		²	= 4.41
	C_min		1000