Multi-Beam-Shaping Structure Single Drive Antenna Control

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Solution Overview

Problem

Conventional multi-beam-shaping solutions for antennas are complex and costly, as they require multiple mechanical interfaces and separate drive units for each frequency band or sector, making it difficult to efficiently set and adjust beam characteristics, especially in multi-band or dual-sector antenna configurations.

Innovation Solution

A multi-beam-shaping means with a single drive unit and electronic system, featuring a mechanical interface arrangement that allows selective adjustment of down-tilt and azimuth angles for individual frequency bands or sectors using flexible or rigid shafts with universal couplings, reducing the need for multiple drive units and interfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If multiple separate drive units and mechanical interfaces are used for each frequency band or sector, then precise control over beam characteristics is achieved, but device complexity and cost increase significantly

Engineering Contradiction:
Improvebeam characteristic control precisionVSAvoidnumber of drive units and mechanical interfaces
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines multiple separate drive units into a single multi-functional drive unit that can control multiple mechanical interfaces. This single drive unit integrates the functionality of what would traditionally require separate motors and control systems, thereby reducing device complexity while maintaining the ability to precisely control beam characteristics across multiple frequency bands or sectors.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The drive unit is designed with universal multi-functionality to handle different mechanical interfaces for various frequency bands and sectors. It can selectively engage with different mechanical interfaces through a unified control system, allowing one drive unit to perform the work of multiple specialized units while maintaining precise control over diverse beam characteristics.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple separate mechanical interfaces are provided for different frequency bands or sectors, then independent beam adjustment is enabled, but manufacturing cost and installation complexity increase

Engineering Contradiction:
Improveindependent beam adjustment capabilityVSAvoidmanufacturing and installation complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

Multiple mechanical interfaces that would traditionally require separate manufacturing and installation processes are integrated into a unified mechanical interface system. This single interface can be manufactured as one cohesive component rather than multiple separate parts, simplifying the manufacturing process and reducing assembly complexity while still enabling independent beam adjustment for different frequency bands or sectors.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If a single drive unit controls multiple mechanical interfaces, then cost and complexity are reduced, but the ability to simultaneously adjust multiple beams may be limited

Engineering Contradiction:
Improvenumber of drive unitsVSAvoidspeed of beam adjustment
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The control system employs periodic action by sequentially switching between different mechanical interfaces in a time-multiplexed manner. The single drive unit rapidly cycles through different interfaces, adjusting each beam in turn, which creates the effect of simultaneous control while actually using sequential periodic adjustments. This approach maintains productivity by ensuring adjustments occur fast enough to be effectively simultaneous for the application.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system uses dynamic switching mechanisms that allow the single drive unit to rapidly transition between different mechanical interfaces. This dynamic capability enables the drive unit to adapt its operation in real-time, switching between controlling different beams as needed, thereby maintaining high productivity despite having only one drive unit.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS8391926B2Multi-beam-shaping structure
Publication Date: 2013.03.05 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
  • US8391926B2 patent drawing
  • US8391926B2 patent drawing
  • US8391926B2 patent drawing

AI summary

A multi-beam-shaping structure is distinguished by the following features: the multi-beam-shaping structure is provided with at least one electronic communication interface for controlling the multi-beam-shaping structure for setting the at least two radiation diagrams differently, the multi-beam-shaping structure comprises at least one driver, preferably comprising an electric motor, and preferably a power unit, the multi-beam-shaping structure comprises at least two first mechanical interfaces and/or coupling points, a drive connection engages on each of the at least two first mechanical interfaces and/or coupling points, the at least one driver of the multi-beam-shaping structure is connected to the at least two mechanical interfaces and/or coupling points via a multidrive, it being possible to actuate selectively at least one of the plurality of drive connections in each case via the at least one driver and the associated controller, and the number of interfaces and/or coupling points being greater than the number of driver.