5 results about "Ceramic resonator" patented technology

In an aspect, an apparatus is disclosed that includes a surface-mounted integrated circuit package housing an active oscillator circuit; an integrated ceramic resonator formed from a ceramic substrate having an upper planar surface receiving the surface- mounted integrated circuit package, the integrated ceramic resonator including a plurality of conductive walls forming a conductive periphery of a ceramic cavity in the ceramic substrate, a conductive rod extending vertically into the ceramic cavity, wherein the conductive rod is isolated from contact with the conductive periphery of the ceramic cavity, a first conductive material extending vertically through the upper planar surface of the ceramic substrate for connecting the conductive periphery of the ceramic cavity to the surface-mounted integrated circuit package housing the active oscillator circuit; and a second conductive material extending through the upper planar surface of the ceramic substrate for connecting the conductive rod to the surface-mounted integrated circuit package.

This application provides a dual-mode filter and an integrated filter. The dual-mode filter includes a first metal resonant module, a second metal resonant module, and a coupled metal resonant module. The coupled metal resonant module includes at least one or more of these modules. Each coupled metal resonant module includes at least a first metal cavity, a second metal cavity, and a ceramic resonator. A first adjustment component is provided on the diagonal of the ceramic resonator. The first adjustment component is used to adjust the resonant frequency. The first adjustment component includes at least a hole, an addition module, or a combination of a hole and an addition module, which can be set according to different product requirements. By providing the first adjustment component on the ceramic resonator in the coupled metal resonant module, it is possible to hollow out or add material on the diagonal of the ceramic resonator to adjust the resonant frequency. This allows for accurate adjustment of the filter's frequency while ensuring a small filter size.

The application provides a ceramic resonator, which comprises a ceramic body A, a stepped through hole arranged in the center of the ceramic body A, the stepped through hole penetrating the ceramic body A through a small hole in the upper part and a large hole in the lower part, a first conductor layer covering the inner side of the small hole, a ceramic adhesive layer covering the inner side of the large hole, a ceramic body B embedded in the large hole of the ceramic body A, a second conductor layer covering the surface of the ceramic body B, wherein the second conductor layer on the top surface of the ceramic body B covers the small hole to form a blind hole and communicates with the first conductor layer, and a third conductor layer covering the top surface, the side surface and the bottom surface of the ceramic body A. Compared with the prior art, the ceramic resonator provided by the application has the characteristics of small size and high Q value due to the specific structure and connection relationship, and has great market competitiveness.

The utility model discloses a kind of acoustic wave soot blower based on ceramic resonant cavity structure, including center axis, the one end of center axis is provided with airflow ejector, the other end of center axis is provided with resonant cavity, the one end of airflow ejector is opened with air inlet, and the gasket is arranged on center axis, the one end of resonant cavity is provided with clamping plate, the one end of airflow ejector is opened with annular slit, the bottom of resonant cavity is opened with connecting hole, the one end of center axis is provided with threaded rod, and nut is arranged on threaded rod.The utility model is replaced by ceramic material more resistant to high temperature, wear-resistant by setting resonant cavity, gasket, clamping plate, connecting hole, threaded rod, nut, this structure the most easily worn, damaged resonant cavity part, the rest part uses high-temperature resistant metal material, significantly improve the service life of resonant cavity acoustic wave soot blower in high-temperature region continuous work, simultaneously adopt the structure of convenient and quick replacement ceramic resonant cavity.

Embodiments of the present application provide a lubricating oil viscosity measurement method, system and electronic equipment, and relate to the field of lubricating oil viscosity measurement. The method controls the piezoelectric ceramic resonator to self-excitation vibration in the lubricating oil to be measured at a preset frequency, obtains a vibration attenuation waveform collected by a data collection circuit, the vibration attenuation waveform includes a plurality of positive half waves, calculates the integral area of each positive half wave, and calculates the area ratio of two adjacent positive half waves based on the integral area. According to the area ratio and the preset viscosity calculation formula, the viscosity of the lubricating oil to be measured is calculated. The vibration attenuation waveform generated by the piezoelectric ceramic resonator in the lubricating oil can quickly calculate the viscosity of the lubricating oil to be measured according to the viscosity calculation formula.