Adjustable Shielding Plate for Base Station Antenna Isolation

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Solution Overview

Problem

Existing base station antenna systems face significant interference due to close distances and poor isolation, limiting the effectiveness of current solutions in reducing interferences among multiple base stations.

Innovation Solution

A device comprising an antenna module, a holding pole, a mounting bracket, and a shielding apparatus that can be adjusted to increase isolation among antennas, featuring a stretchable or adjustable shielding plate made of metal or absorbing material, allowing for angle and position adjustments to optimize signal tuning and reduce interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the distance and height among antennas are increased to improve isolation, then interference among antennas is reduced, but the device complexity and space requirements increase

Engineering Contradiction:

Improveinterference among antennasVSAvoidspace requirements and construction complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

A shielding plate is introduced as an intermediary component between multiple antennas to block electromagnetic wave propagation. The shielding plate physically divides the space and prevents direct signal interference between antennas, achieving isolation without requiring increased distance or height among antenna elements.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

Instead of solving the isolation problem in the horizontal plane by increasing distance between antennas, the solution introduces a vertical dimension by placing a shielding plate between antennas at different heights. This dimensional approach creates electromagnetic isolation through vertical separation and shielding rather than horizontal distancing.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If shielding materials are added to increase isolation among antennas, then anti-interference capability is enhanced, but the device complexity and manufacturing difficulty increase

Engineering Contradiction:

Improveinterference among antennasVSAvoidmanufacturing and installation ease

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The shielding plate is designed with adjustable parameters including angle of installation, position relative to antennas, and dimensions. This adjustability allows optimization of shielding effectiveness while maintaining ease of installation and manufacturing, as the same basic component can be adapted to different spatial configurations without requiring custom-designed complex structures.

Inventive Principle:

Principle #35Parameter changes

3Object-affected harmful factors

If fixed shielding structures are used to block interference, then isolation among antennas is improved, but the adaptability to different spatial configurations is reduced

Engineering Contradiction:

Improveinterference among antennasVSAvoidadaptability to different spatial configurations

Core Design Contradiction:

Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The shielding plate is designed as a dynamic component that can be adjusted in angle, position, and orientation after installation. This dynamic capability allows the shielding structure to adapt to different spatial configurations of antennas and base station layouts, providing versatility while maintaining effective interference blocking through proper positioning.

Inventive Principle:

Principle #15Dynamics

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 device efficiently increases isolation among base station antennas, reducing interferences and enhancing anti-interference capabilities while being easy to manufacture and install, suitable for network use.

Implementation Method 1

a shielding apparatus placed on the holding pole or the antenna module, and capable of being adjusted in directions... which includes: a stretchable shielding plate... The shielding apparatus may be an apparatus that absorbs or shields an electromagnetic wave

Methodology Applied

Scientific EffectElectromagnetic wave absorption: Absorption (EM radiation)

Implementation Method 2

The shielding apparatus may be an apparatus that absorbs or shields an electromagnetic wave... featuring a stretchable or adjustable shielding plate made of metal or absorbing material

Methodology Applied

Scientific EffectElectromagnetic shielding: Faraday Cage

Data Source

PatentUS9570801B2Device for reducing interference among antennas of multiple base stations

Publication Date: 2017.02.14 ZTE CORP

AI summary

A device for reducing interference among antennas of multiple base stations is provided, which includes an antenna module placed on a base station and configured to transmit and receive radio waves, a holding pole placed on the base station and configured to support the antenna module, a mounting bracket coupled to the antenna module and the holding pole, and a shielding apparatus placed on the holding pole or the antenna module and capable of being adjusted in directions. The device has a simple structure; it is easy to manufacture and install the device; it can be applied to the base station's antennas in network use. In addition, the device can efficiently increase isolation and reduce interferences among the antennas of the multiple base stations.