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Selecting values of LC circuit in a tuned RF amplifier

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froten

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Hello all,

When designing a tuned RF amplifiers, a LC circuit is used in the input of the amplifier or as a load of its transistor collector. The L&C values for a certain frequency can be changed for the same rfrequency. For Example, for 4Mhz, we can use 1uH with 1583 pf, 10uH with 158 pf or another values.

What is the values selection trick?
 

Re: Tuned circuits

Different values will provide different Q factor. For parallel tuned circuit as lower L and higher C as better the Q factor. Q factor can be determined from required bandwidth.
 

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