Dielectric filter, method for preparing dielectric filter and communication equipment

Abstract

The invention discloses a dielectric filter, a method for preparing the dielectric filter and communication equipment. According to the embodiment of the invention, the dielectric filter comprises: atleast two dielectric block combinations which are arranged side by side at intervals and respectively comprise at least two dielectric blocks which are arranged in a coplanar manner at intervals; a first dielectric coupling piece which is arranged between the at least two dielectric block combinations; and a second dielectric coupling piece which is arranged between at least two dielectric blockswhich are combined by the same dielectric block and are arranged adjacently in space so as to form a cross coupling path, wherein the at least two dielectric block combinations, the first dielectriccoupling piece and the second dielectric coupling piece are integrally sintered and formed, and materials of the dielectric filter at least comprise magnesium oxide, calcium oxide, titanium dioxide and zinc oxide. In this way, the production efficiency can be improved, the cost is saved, and mass production is facilitated; and the size can be reduced while the characteristics such as out-of-band rejection are improved.

Description

technical field [0001] The present application relates to the field of communication technologies, in particular to a dielectric filter applied to a 5G communication system, a method for preparing a dielectric filter, and communication equipment. Background technique [0002] With the rapid development of communication technology, especially the upcoming 5G communication era, more stringent technical requirements are put forward for the system architecture. While achieving high-efficiency and large-capacity communication, system modules must be highly integrated, miniaturized, Lightweight and low cost. For example, 5G Massive MIMO technology expands the system channel from the current 8 or 16 channels to 32, 64 or even 128 channels, and at the same time requires that the size of the overall system architecture should not be too large, and even a certain degree of miniaturization must be achieved. Microwave filters are the core components of the system, and their performance...

AI Technical Summary

Problems solved by technology

Existing dielectric filters all adopt split splicing molding process, which requires complex and cumbersome processes such as stencil silver coating, high-precision positioning splicing of fixtures, secondary high-temperature sintering, etc. These processes will lead to low yield in mass production of dielectric filters The efficiency of mass production is low, resulting in prominent production cost problems and even difficult mass production

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