Tunable Resonator Filter With Movable Bar Frequency Adjustment
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently utilizing the available spectrum due to the need for more frequency bands to maintain quality of service and meet growing demand.
Innovation Solution
The implementation of frequency adjustable filters with a housing, resonator elements, and an adjusting bar mechanism that allows for precise tuning of resonant frequencies by adjusting the position of the adjusting bar within the resonator elements, using a driving shaft and actuator to achieve accurate frequency adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequency adjustable filters are used to enable dynamic frequency adjustments, then adaptability is improved, but device complexity increases due to the adjusting bar mechanism, driving shaft, and actuator components
Solution Approach 1:
The filter structure transitions from static to dynamic by introducing a movable adjusting bar that can be positioned at different locations within the resonator elements. The bar's position is controlled by an actuator mechanism, enabling the filter to dynamically adjust its resonant frequency according to different operating conditions and spectrum availability.
Solution Approach 2:
The adjusting bar serves multiple functions: it acts as a tuning element for frequency adjustment, a mechanical connector between the actuator and resonator elements, and a structural component that maintains the integrity of the resonator cavity. This multi-functionality reduces the need for separate components.
2Measurement precision
If the adjusting bar is positioned within overlapping resonator elements to enable frequency tuning, then frequency adjustment precision is improved, but manufacturing precision requirements increase
Solution Approach 1:
The adjusting bar is nested within the overlapping region of the first and second resonator elements. This nested configuration allows the bar to be precisely positioned by the relative alignment of the resonator elements themselves, which serve as both the resonating structures and the guiding features for the adjusting bar.
Solution Approach 2:
The overlapping resonator elements are designed with equipotential alignment features that ensure the adjusting bar maintains a consistent positional relationship with both elements simultaneously. This equipotential design reduces sensitivity to manufacturing variations by distributing the alignment requirements across multiple symmetric features.
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
Enables efficient use of the spectrum by allowing dynamic frequency adjustments, enhancing the performance and flexibility of wireless communication systems.
Implementation Method 1
per a cavity forming a resonator, at least: a first resonator element extending from the lid towards a bottom of the cavity
Data Source
AI summary
Arrangements for a frequency adjustable filter, which includes at least a housing, which includes one or more cavities closed by a lid above the housing are disclosed. In an arrangement, there is, per a cavity forming a resonator, a first resonator element extending from the lid, a second resonator element extending from the bottom, the second resonator element partially overlapping the first resonator element, an adjusting bar extending inside an area in which the first and the second resonator elements are overlapping, the adjusting bar being arranged to move within said area, a first hole either in the lid or in the bottom, a driving shaft, and an actuator arranged to move the adjusting bar through the first hole by means of the driving shaft. At least the first resonator element, the second resonator element and the adjusting bar are positioned to have a common vertical central axis.