In super heterodyne receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 80.

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written 6.2 years ago by

teamques10 ★ 69k

• modified 6.2 years ago

If the IF is 455KHz calculate image frequency and rejection ratio for tunning (i) 100KHz (ii) 20MHz.

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written 6.2 years ago by

teamques10 ★ 69k

Given :

Super Hetrodyne receiver loaded Q of antenna coupling circuit = 80

Image frequency (f i) = 455 KHz

To Find :

i) Image frequency and rejection ratio for tunning 100 KHz

$\rightarrow f_{si} = f_s + 2f_i$

= 100 + 2 x 455 = 1010 KHz

$f = …

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