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Radio Frequency Integrated Circuit Design - Webs

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High-<strong>Frequency</strong> Filter <strong>Circuit</strong>s<br />

Figure 9.3 An LNA circuit with series resonator added to provide bandstop filtering.<br />

At the resonance frequency, the gain of this circuit will be given by<br />

| A v<br />

� = 1<br />

√LC<br />

=−g m R L<br />

R<br />

R + 1<br />

g m<br />

323<br />

(9.5)<br />

Thus, provided that R

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