Dielectric resonance block, dielectric waveguide filter and coupling structure of dielectric waveguide filter

Abstract

The invention discloses a dielectric resonance block, a dielectric waveguide filter and a coupling structure of the dielectric waveguide filter. A first metalized layer is arranged on the dielectric resonance block; the first metalized layer is provided with an annular through groove and a second metalized layer arranged in the annular through groove; and the annular through groove is used for forming a coupling window. The strength of energy coupling between dielectric resonance blocks can be improved, higher harmonics are prevented from being relatively close to the pass band, and the far-end out-of-band performance is good; in this way, the energy coupling strength of the coupling structure adopting the dielectric resonance block is high, the higher harmonics are relatively far away from the pass band, and the far-end out-of-band performance is good; and therefore, the energy coupling strength of the dielectric waveguide filter adopting the coupling structure is high, and the far-end out-of-band performance is good.

Description

technical field [0001] The invention relates to the technical field of communication equipment, in particular to a dielectric resonance block, a dielectric waveguide filter and a coupling structure thereof. Background technique [0002] With the advent of the 5G era, miniaturized, lightweight, and low-cost microwave radio frequency devices have become a future development trend. With the continuous and in-depth development of wireless communication, the advocacy of green energy and the demand for cost reduction are becoming stronger and stronger, and the demand for portable terminal systems with miniaturization, high performance and low power consumption is increasing, and correspondingly, filters are required to be miniaturized and lightweight keep improving. Dielectric waveguide filters perfectly meet the development needs of 5G communication devices due to their miniaturization, light weight, and high performance. [0003] The dielectric resonator blocks of traditional ...

AI Technical Summary

Problems solved by technology

[0003] The dielectric resonator blocks of traditional dielectric waveguide filters mainly rely on the air medium in the coupling window for energy coupling. Due to the limited strength of energy coupling, in order to improve the strength of energy coupling, the size of the coupling window needs to be increased, resulting in high-order The harmonics are closer to the passband, which affects the far-end outband performance of the dielectric waveguide filter

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