Impedance matching process and method, impedance, resonance, matching capacitor

QWE4562009

Impedance matching process and method, impedance, resonance, matching capacitor [Copy link]

The process and method of impedance matching, impedance, resonance, matching capacitor

1. Using the impedance tested by Smith (piezoelectric ceramic transducer), how to calculate the LC circuit matching value based on the impedance, real part, and imaginary part tested by piezoelectric ceramics? Is the test here wrong? How to understand the values of the real and imaginary parts? What do they mean?

2. If I want to use an LC resonant circuit to drive C in LC, is it necessary? After all, the piezoelectric ceramic transducer already has static capacitance. XC=XL can produce resonance. Is it enough to just find an inductor? However, the actual circuit will weld matching capacitors C1 and C2 to make the external matching capacitors and the piezoelectric ceramic matching capacitors form a parallel relationship. What is the purpose of doing this?