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The loss in high frequency circuits is affected by the level of inductor Q used for matching circuits. In order to confirm this, Murata's SAW filter and RF inductor were used to replace the RF inductor with a different Q in the matching circuit, and the insertion loss of the SAW filter was measured and compared. As shown here in Figure 4, it can be confirmed that the insertion loss of the SAW filter differs by the RF inductor used. From the results of this test, when the level of the RF inductor Q is higher (low loss) the insertion loss of the SAW filter becomes less. Accordingly, the level of the inductor loss is important for RF circuit.
PTM Published on: 2023-05-25
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