topquark
Community Member
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Posts: 61
Thames Valley, UK
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First off, you can shrink L so much as you increase C at a given frequency fRES. Choice of integrated L value is primarily affected by 2 criteria: 1) Effective tank conductance GTK varies inversely as L So, larger L=> larger QL and lower GTK
2) phase noise L(Δω) varies directly as RL, the series resistance of the inductor larger L=> larger RL and poorer L
It follows, largerL=> lower power consumption, lower fRES and fQ-PEAK, the freq at which Q peaks. So, we choose the largest L having peak Qclose to the operating frequency
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