Cylindrical waveguide microwave cavity for rubidium clock

A cylindrical, microwave cavity technology, applied in the field of waveguide microwave cavity, to achieve the effect of high coupling efficiency, reduced follow-up, and low power consumption

Active Publication Date: 2013-04-17
CHENGDUSCEON ELECTRONICS
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Problems solved by technology

[0005] The invention provides a cylindrical waveguide microwave cavity for a rubidium clock, aiming at overcoming the defects that the existing microwav

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  • Cylindrical waveguide microwave cavity for rubidium clock
  • Cylindrical waveguide microwave cavity for rubidium clock

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Embodiment

[0023] As one of the core technologies of rubidium clocks, microwave cavities are the focus of research and design of rubidium clocks today. Therefore, many types of microwave cavities have emerged, mainly including the following:

[0024] (1) The cavity of the microwave cavity is square, so the contact surface is small when placing the commonly used absorbing bubbles, which leads to the large size of the microwave cavity, poor mechanical properties, and high heating power required;

[0025] (2) The coupling ring in the microwave cavity adopts the electrical coupling design of U-shaped structure. The coupling efficiency of the coupling ring with this structure is low. At the same time, the requirements for the processing and manufacturing precision of the components are very high, which is not conducive to mass production;

[0026] (3) Insert the frequency-saving diode and coupling ring into the microwave cavity through the opening on the side of the microwave cavity, and tune ...

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Abstract

The invention discloses a cylindrical waveguide microwave cavity for a rubidium clock and belongs to the technical field of electronics. The cylindrical waveguide microwave cavity comprises a cylindrical waveguide tube (2) with an upper end face open, an atom absorbing bulb (3) arranged in the cylindrical waveguide tube (2), and a photoelectric component (1) arranged at an opening of a groove of the waveguide tube (2). A metal adjusting screw (4) movably connected with the waveguide tube (2) is horizontally arranged on the lateral side of the upper portion of the waveguide tube (2), and a light permeable hole (5) is reserved in the middle of the bottom of the waveguide tube. By the above arrangement, the cylindrical waveguide microwave cavity overcomes the defect that an existing microwave cavity cannot meet the requirements of small size, simple structure, batch production, high accuracy and capability of effectively suppressing microwave leakage at the same time, and is free of medium filing and simple structure, and requirements for processing accuracy of appearance size of the microwave cavity and size of the atom absorbing bulb in the microwave cavity are low. Besides, the cylindrical waveguide microwave cavity is simple to assemble and debug and favorable for batch production of the rubidium clocks.

Description

technical field [0001] The invention relates to a waveguide microwave cavity, in particular to a cylindrical waveguide microwave cavity used for a rubidium clock. Background technique [0002] The rubidium clock is a kind of atomic clock. The atomic clock uses the frequency of the atomic transition line as the measurement benchmark and is an instrument that provides standard frequency and time. As a kind of atomic clock, rubidium clock has the characteristics of small size, light weight and low power consumption compared with other atomic clocks, and is currently the most widely used atomic clock. The basic principle of the rubidium clock is to lock the output frequency of the voltage-controlled crystal oscillator and multiply it to the transition frequency of the rubidium atom by a frequency multiplier to the 6.8G microwave frequency signal, then feed it into the atomic absorption bubble and resonate with the atom to output a frequency discrimination signal, and then throug...

Claims

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Application Information

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IPC IPC(8): G04F5/14
Inventor 曹远洪
Owner CHENGDUSCEON ELECTRONICS
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