Microwave ceramic filer element and production method thereof

Abstract

The invention discloses a microwave ceramic filer element. The microwave ceramic filer element is composed of the following raw materials in percentage by weight: 5%-15% of Mg, 5%-15% of Sm, 5%-15% ofCa, 5%-15% of Zn, 5%-15% of Al, 5%-15% of Sr, 0.01%-0.1% of La, 0.01%-0.1% of Mn, 0.01%-0.1% of Sn, 0.01%-0.1% of Co, 0.01%-0.1% of Bi, 30%-40% of Ti, 0.01%-0.1% of Cu, 0.01%-0.1% of Ni, 0.01%-0.1% of Sn, 0.01%-0.1% of Pb, 0.1%-0.9% of Zr, 0.1%-0.9% of Nd, 0.1%-0.9% of Ta and 0.1%-0.9% of Ce. The raw materials are mixed according to a certain ratio, through working procedures of ball milling, drying, synthesizing, tabletting, firing and the like, energy consumption is greatly reduced, and a finished product with an ultrahigh Qf value can be obtained, has an outstanding electrical property, mechanical property and thermal property, especially has high mechanical strength, resistance to high and low temperature and high humidity, resistance to radiation, high dielectric strength and good aging performance, has the advantages of high stop-band suppression, low pass-band insertion loss, a wide frequency band, high power, a far spurious pass-band, in-band flat group delay and small size, is excellent in comprehensive performance, uniform in element and higher in reliability, and has important industrial application values.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a microwave ceramic filter element and a preparation method thereof. Background technique [0002] With the rapid development of wireless communication technology, frequency resources are becoming increasingly scarce, and microwave ceramic filter components have the function of identifying and separating useful signals and useless signals in microwave and millimeter wave communication electronic circuits, so they have become important components in communication systems , its performance directly affects the quality of the entire communication system. [0003] However, traditional microwave ceramic filter components have low Qf value, low stopband rejection, high passband insertion loss, narrow frequency band, low power, near parasitic passband and fast flat group time in the band. In the production, there are problems such as high energy consumption and poor stab...

AI Technical Summary

Problems solved by technology

[0003] However, traditional microwave ceramic filter components have low Qf value, low stopband rejection, high passband insertion loss, narrow frequency band, low power, near parasitic passband and fast flat group time within the band.

In production, there are problems such as high energy consumption and poor stability of high-temperature process, which lead to insufficient stability of product performance