In order to increase the system efficiency of piezoelectric transducer and ensure its working safety,the resonance matching function and impedance matching function were analyzed based on the equivalent circuit of the transducer.

The Design of Short Wave Transm itter Tune System Based on FPGA;

Autotune Control System of FPGA High-Power Transmitter;

This thesis sketchs out characteristics of parallel oscillatory circuit and tune means of KGPS applied in Induction quenching.

Approach to tuning natural frequency of variable stiffness elastic support of 3D vibration strengthening polishing vibration table;

RF coil tuning and matching;

The fault waveform analysis of arc-suppression coil earthing system and calculation of tuning parameters;

Microwave transmission properties of tunable one-dimensional metamaterials;

Wavelength Chirp-free Tunable Yb~(3+)-doped Double Cladding Fiber Laser;

It is very small and very tunable.

Aiming at this problem,the concept of the second order power spectrum was proposed based on the characteristic of the amplitude tune with pe- riodical notch spectrum in thin layer and theoretically researched.

The results show that with the increase of the quality of ZrO2 dopant, the loss tangents of BSTO/MgO material remain basically unchanged and tunability significantly enhanced, but excess quantity of ZrO2 would lower tunability.