Dielectric filter, communication equipment, method for preparing dielectric block and method for preparing dielectric filter

Abstract

The invention discloses a dielectric filter applied to a 5G communication system, communication equipment, a method for preparing a dielectric block and a method for preparing the dielectric filter. The dielectric filter comprises: a first dielectric block, a second dielectric block, a third dielectric block, a coupling structure and a metal layer. A coupling structure is arranged on the contactsurface of the first dielectric block and the third dielectric block, a coupling structure is arranged on the contact surface of the second dielectric block and the third dielectric block, the first dielectric block, the second dielectric block, the third dielectric block and the coupling structure are integrally formed to obtain the dielectric block, and the metal layer covers the surface of thedielectric block, wherein materials of the dielectric filter at least comprise calcium carbonate, samarium trioxide, aluminum oxide and titanium dioxide. According to the invention, a gap at the jointof the first dielectric block and the third dielectric block or the joint of the second dielectric block and the third dielectric block can be avoided, signal leakage is prevented, and the performance of the dielectric filter is improved.

Description

technical field [0001] The present application relates to the technical field of communication equipment, and relates to a dielectric filter applied to a 5G communication system, communication equipment, and a method for preparing a dielectric block and a dielectric filter. 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, while 5G Massive MIMO technology realizes the further expansion of system channels from the current 8 or 16 channels to 32, 64 or even 128 channels, it requires that the overall system architecture size not be too large, and even a certain degree of miniaturization is required. Microwave filters are the core components of the system, a...

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Problems solved by technology

However, the dielectric filter in the prior art needs to splice and sinter the multi-mode dielectric resonator and the single-mode dielectric resonator, and there will be a gap at the connection between the multi-mode dielectric resonator and the single-mode dielectric resonator, resulting in signal leakage

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