Microminiature atomic frequency standard microwave cavity based on microstrip line structure

Abstract

The invention discloses a microminiature atomic frequency standard microwave cavity based on a microstrip line structure, and the cavity comprises a cavity body, one end of the cavity body is a lightoutlet, the other end of the cavity body is a light inlet, the outer surface of the cavity body is circumferentially provided with a wire duct, a C field coil is wound in the wire duct, the light outlet of the cavity body is provided with an end cover, the light inlet of the cavity is provided with a bottom cover, a light inlet hole is arranged on the bottom cover, an atomic bubble is arranged inthe cavity, a microstrip line substrate is arranged in the cavity, the microstrip line substrate comprises a dielectric substrate and a metal conductor arranged on the dielectric substrate, the dielectric substrate is bonded with the inner wall of the cavity, and the metal conductor faces the atomic bubble. The microminiature atomic frequency standard microwave cavity has the advantages of easiness in processing, simplicity in assembly, good field pattern distribution, small size and low cost, and is suitable for mass production of high-performance ultra-small atomic frequency standards.

Description

technical field [0001] The present invention belongs to the field of atomic frequency standards, and more specifically relates to an ultra-small atomic frequency standard microwave cavity based on a microstrip line structure. The microwave cavity with this structure has the characteristics of simple structure, easy processing and assembly, and convenient large-scale production, and is suitable for high integration In the ultra-small atomic frequency standard. Background technique [0002] With the development of social science and technology, accurate and stable time-frequency references are required in many important areas of human social activities and daily life. Atomic frequency standard (atomic clock) is a high-reliability frequency source made by using the transition frequency between stable energy levels inside atoms or ions, which greatly improves the accuracy and stability of time-frequency measurement. Thanks to the rapid development of atomic physics and integrat...

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Problems solved by technology

However, since the electromagnetic field generated by the coaxial line is mainly distributed around the coaxial line, the coaxial line is located at one end of the cavity, and the atomic gas chamber is located at the other end of the cavity, the uniformity of the field distribution in the gas chamber is very limited, which is not conducive to obtaining high Strong atomic transition signal, so it is not suitable for the development of high-performance atomic frequency standards

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