Dielectric Filter Through-Hole Layout for Harmonic Suppression
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Solution Overview
Problem
Existing dielectric filters in massive MIMO systems suffer from decreased high-order harmonic wave frequency and poor remote suppression capability, failing to meet specification requirements, necessitating the addition of a low-pass filter.
Innovation Solution
Incorporating a first through-hole between adjacent dielectric resonators to cut the magnetic field distribution, thereby increasing the high-order harmonic wave frequency and improving remote suppression capability, eliminating the need for an additional low-pass filter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple dielectric resonators are coupled together to form a dielectric filter, then the filter functionality is achieved, but the overall size and magnetic field distribution area increase, causing high-order harmonic wave frequency to decrease and remote suppression capability to deteriorate
Solution Approach 1:
The patent introduces through-holes between adjacent dielectric resonators to segment the magnetic field distribution area. This segmentation isolates the magnetic fields of individual resonators, preventing their interaction and expansion, thereby maintaining compact overall size while improving remote suppression capability by preserving high-order harmonic wave frequencies
Solution Approach 2:
The patent employs a porous structure by introducing through-holes within the dielectric filter body. These through-holes act as magnetic field barriers, cutting off the expansion of magnetic field distribution area between resonators, thus preventing the decrease in high-order harmonic wave frequency and improving remote suppression capability without increasing overall filter size
2Reliability
If multiple dielectric resonators are coupled together to form a dielectric filter, then the filter functionality is achieved, but the high-order harmonic wave frequency decreases and remote suppression capability deteriorates, requiring additional low-pass filter
Solution Approach 1:
The patent merges the functions of harmonic suppression and filter operation into a single dielectric filter structure by introducing through-holes. This integration eliminates the need for separate low-pass filters, reducing overall device complexity while maintaining or improving remote suppression capability
Solution Approach 2:
The through-holes in the dielectric filter serve multiple functions: they maintain the filter's frequency selection capability while simultaneously suppressing high-order harmonic waves and improving remote suppression performance. This multi-functionality eliminates the need for additional dedicated suppression components, reducing device complexity
3Reliability
If an additional low-pass filter is added to work with the dielectric filter to meet remote suppression capability requirements, then specification requirements are met, but cost and loss increase
Solution Approach 1:
The patent combines harmonic suppression functionality into the main dielectric filter structure through the introduction of through-holes. This integration eliminates the need for separate low-pass filters, reducing signal loss that would occur at additional filter interfaces while meeting remote suppression capability requirements
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances high-order harmonic wave frequency and remote suppression capability, meeting specification requirements while reducing costs and complexity by eliminating the need for a low-pass filter.
Implementation Method 1
a first through-hole is disposed between at least one pair of adjacent dielectric resonators... so that a magnetic field distribution area is reduced
Data Source
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AI summary
A dielectric filter and a communications device are provided, to resolve a problem in the prior art that a dielectric filter causes a decrease in a high-order harmonic wave frequency and a poor remote suppression capability, and specification requirements cannot be met. The dielectric filter includes at least two dielectric resonators, a first through-hole is disposed between at least one pair of adjacent dielectric resonators, and the first through-hole is configured to cut a magnetic field between the at least one pair of adjacent dielectric resonators. In this way, a magnetic field distribution in the dielectric filter may be cut via the first through-hole, so that a magnetic field distribution area is reduced, and a high-order harmonic wave frequency can be increased, thereby improving a remote suppression capability and meeting the specification requirements.