Universal chip-free sensor and design method thereof

The invention discloses a universal chip-free sensor and a design method thereof. The method comprises the following steps: constructing a sensor equivalent filter circuit A; calculating a frequency response function and a resonance frequency of the equivalent filter circuit A of the sensor; constructing a sensor equivalent filter circuit B for sensing a target; determining a frequency response function and a resonance frequency of an equivalent filter circuit B of the sensing target sensor; calculating a parameter value range of a sensing target sensor equivalent filter circuit B of a dielectric constant range and a working frequency range of different sensing targets; according to the method, repeated and time-consuming simulation operation is converted into low-complexity mathematical model calculation, a new chipless sensor can be rapidly designed for new sensing application, a large amount of manpower cost needed by a traditional design method is eliminated, and calculation time is shortened. The method