Determining Resonator Q Factor from Return Loss Measurement Alone

Feb. 21, 2022

In this article, you can learn how to determine the Q factor of a resonator for such applications as evaluating the performance of an RFID tag or if it can be used for a coupled resonator filter.

Readers will learn how to determine the Q factor of a resonator using return loss measurements from a vector network analyzer, using graphics, equations, and measurements as examples. The measurements are done using a Copper Mountain Technologies 2-port USB VNA with a maximum frequency of 1.3 GHz.

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