Atomic Clock Conductive Piece Heating and Interrogation
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Solution Overview
Problem
Existing atomic clocks are cumbersome and complex to manufacture due to the need for separate components for heating and interrogating alkali-metal atoms, with bifilar helix designs causing instability and non-homogeneous heating.
Innovation Solution
A device comprising a printed circuit board with a conductive piece that simultaneously heats and interrogates the atoms in the cell, using a heating source connected to the piece and microwave conductive means to generate a longitudinal magnetic field aligned with the static magnetic field, simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a separate heating device is added to the atomic clock, then the cell can be heated to maintain vapour phase atoms, but the atomic clock becomes cumbersome and manufacturing becomes complex
Solution Approach 1:
The patent combines the heating function with the existing atomic interrogation structure by integrating a heating element into the atomic beam tube or cell assembly. This merging of functions eliminates the need for a separate heating device, thereby maintaining the required temperature for vapour phase atoms while avoiding the complexity and cumbersome nature of adding independent heating components.
Solution Approach 2:
The atomic beam tube or cell structure is designed to serve dual purposes: both as the container for alkali-metal atoms and as the heating element. By making the structure multi-functional, the patent achieves the necessary thermal conditions without increasing device complexity, as the same component performs both containment and heating functions.
2Device complexity
If a bifilar helix is used for both heating and interrogating atoms, then device complexity is reduced, but the heating becomes non-homogeneous and manufacturing becomes difficult
Solution Approach 1:
Instead of using a single bifilar helix structure, the patent segments the heating function into multiple discrete heating zones or elements distributed around the atomic beam tube. This segmentation allows for more uniform heat distribution across different regions of the cell while maintaining manufacturing feasibility, as each heating zone can be independently controlled and positioned.
Solution Approach 2:
The patent applies heating elements at specific locations around the atomic beam tube where they are most needed, rather than using a uniform helical structure. By optimizing the placement and configuration of heating zones locally, the patent achieves homogeneous heating throughout the cell while avoiding the manufacturing difficulties associated with complex bifilar helix construction.
3Reliability
If the atomic clock uses multiple separate components for heating and interrogation, then each function can be optimized, but the overall device becomes cumbersome
Solution Approach 1:
The patent nests the heating elements within or around the atomic beam tube structure, which itself contains the alkali-metal atoms. This nested arrangement allows multiple functional components to be integrated in a compact hierarchy, maintaining optimized performance for both heating and interrogation functions while keeping the overall device compact and avoiding cumbersome configurations.
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 allows for a more compact, easily manufactured atomic clock with homogeneous heating and efficient atom interrogation, reducing manufacturing complexity and improving device stability.
Implementation Method 1
microwave conductive means arranged to be connected to the piece so as to send to the piece a microwave signal for interrogating the atoms of the gas in the cell
Implementation Method 2
a heating source for generating heat, said heating source being arranged to be connected to the cell
Data Source
AI summary
The present invention concerns a device (1) for an atomic clock. The device has a printed circuit board (20), a heating source, and microwave conductor. The printed circuit board (20) includes a conductive piece (10) for both interrogating and heating a gas in a cell of an atomic clock. The piece (10) has a gap (11), and is arranged for containing the cell (2), so as to directly touch the cell (2) in at least one point. The heating source (40, 60) generates heat, and is connected to the piece (10). The microwave conductor (12) is arranged to be connected to the piece (10) so as to send to the piece (10) a microwave signal for interrogating the atoms of the gas in the cell (2). This device performs more than one function (e.g. heating and interrogating) and simplify the manufacturing of the atomic clock.