RADIO FREQUENCY FILTERING CIRCUITRY ON INTEGRATED PASSIVE DIE
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United States of America Patent
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Issued Date -
Feb 23, 2023
app pub date -
Oct 18, 2022
filing date -
Oct 18, 2022
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Abstract
An integrated passive die includes a substrate, an input node, an output node, and RF filtering circuitry. The RF filtering circuitry includes a number of LC tank circuits coupled between the input node and the output node. Each one of the LC tank circuits include an inductor and a capacitor. The inductor is formed by a metal trace over the substrate. The capacitor is coupled in parallel with the inductor over the substrate. The inductor and the capacitor are provided such that a resonance frequency of the combination of the inductor and the capacitor is less than a self-resonance frequency of the inductor.
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