Multilayer ultra-wideband filter

Abstract

The present invention relates to the microwave communication system field, especially to a multilayer ultra-wideband high-pass filter. A multilayer ceramic filter comprises external electrodes, internal electrodes and a plurality of sheet-shaped ceramic dielectric layers which are stacked together; each external electrode is formed by a metal electrode with shield earthing and a input / output metal terminal electrode; each sheet-shaped ceramic dielectric layer plane is coated with the internal electrode; the internal electrode comprises two layers of shielding grounding electrodes, four banding lead-out wire electrodes and two S-shaped grounding electrodes, wherein input / output coupling capacitors are formed between the banding lead-out wire electrodes and the S-shaped grounding electrodes and are configured to regulate bandwidth and cut-off frequency. Through structure optimization of the internal electrode on different sheep-shaped ceramic dielectric layers, filters having different electrical performances can be designed on the same filter volume, and the consistence and the reliability of the technology can be effectively improved.

Description

technical field [0001] The invention relates to the field of microwave communication systems, in particular to a multilayer ceramic ultra-wideband high-pass filter. Background technique [0002] With the rapid development of communication technology, people's requirements for wireless communication are not only for simple voice communication, but also for wireless communication systems with large data volume and high security such as high-definition video. Ultra-wideband (UWB) wireless communication technology has become a research hotspot in the field of wireless communication because of its simple system structure, low cost, low power consumption, high transmission rate, and good security. In February 2002, the US Federal Communications Commission (FCC) approved the application of UWB technology in the field of short-distance wireless communication, and opened the frequency band from 3.1GHz to 10.6GHz for commercial use. UWB technology has broad application prospects, suc...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art, and provide a multi-layer ultra-wideband filter. The ultra-wideband filter is based on an improved high-low pass series equivalent circuit, and cleverly utilizes a three-dimensional space layout to form an ultra-wideband filter. Filter; the passband bandwidth is greatly expanded, thereby realizing the ultra-wideband filtering function and solving the problem of filtering at the receiving end of the ultra-wideband antenna.

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