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sistemas de comunicaciones electrónicas - Universidad de Oviedo

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Oscilador<br />

E'<br />

+<br />

-<br />

R<br />

E<br />

β<br />

A<br />

S<br />

Sistema realimentado<br />

S = A·E<br />

R = S· β<br />

'<br />

E = E − S· β<br />

E '<br />

=<br />

E<br />

+ S· β =<br />

S<br />

A<br />

+ S· β =<br />

⎛1+<br />

A· β<br />

S· ⎜<br />

⎝ A<br />

⎞<br />

⎟<br />

⎠<br />

A<br />

'<br />

=<br />

S<br />

'<br />

E<br />

=<br />

⎛ A ⎞<br />

⎜ ⎟<br />

⎝1+<br />

A· β ⎠<br />

40

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