Microwave Cavity for Hydrogen Atom Frequency Standard and Method for Reducing Temperature Coefficient of Microwave Cavity
A technology of microwave cavity and hydrogen atom, applied in the field of microwave cavity, can solve the problems of high processing precision, high Q value cost, difficult surface polishing, etc., and achieve the effects of simple processing, high surface polishing precision and low cost
Inactive Publication Date: 2016-08-10
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The cavity of the microwave cavity is processed in one time, and has excellent mechanical stability, but the processing precision is high, the surface polishing is difficult, and the cost of obtaining a high Q value is high
Patent 201020658216.4 proposes a rectangular magnetron microwave, which has the advantages of small size, high Q value, and good mechanical stability, but requires corresponding changes to peripheral devices
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] Such as Figure 1-2 Shown is a schematic structural diagram of a microwave cavity used for a passive hydrogen atomic frequency standard according to the present invention. The microwave cavity includes a blade 1, a pillar 2, a cavity body 3, and a cavity cover. The upper and lower ends of the cavity body 3 are respectively provided with a cavity The cover 4 and the cavity cover 5 , the cavity 3 is provided with a blade 1 , and the blade 1 is connected to the cavity 3 through the pillar 2 . An adjusting piston 6 is arranged on the chamber cover 4 .
[0022] The cavity body 3 is a cylindrical shape penetrating up and down, and the cavity body 3 is respectively fixed with the cavity cover A4 and the cavity cover B5 by screws. Blade 1, pillar 2 and chamber wall 7 are processed separately, and blade 1 is fixed on the pillar 2 by screw, and pillar is fixed on the chamber wall 7 by screw again, and pillar is fixed on the 1 / 2 circumference place of chamber wall (such as Multi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a microwave cavity used for a hydrogen atomic frequency standard and a method for reducing the temperature coefficient of the microwave cavity. The microwave cavity includes blades, pillars, a cavity body, and a cavity cover. The upper and lower ends of the cavity are respectively provided with cavity covers. , the cavity is provided with blades, and the blades are connected with the cavity through the pillars. The microwave cavity is composed of separate parts, which is easy to process, low in cost, high in surface polishing precision, and can obtain a high Q value. At the same time, it has the good mechanical stability of the magnetron microwave cavity and the frequency tuning of the slotted cavity. Convenience and other advantages, the weight is smaller than the magnetron microwave cavity of the same volume, and the unloaded Q value is about 10% higher.
Description
technical field [0001] The invention relates to a microwave cavity, in particular to a microwave cavity used for a hydrogen atom frequency standard and a method for reducing the temperature coefficient of the microwave cavity. Background technique [0002] The hydrogen atomic frequency standard is widely used in the fields of satellite navigation, punctuality, time service, aviation and communication because of its excellent medium and long-term stability. Compared with the active hydrogen atomic frequency standard, the passive hydrogen atomic frequency standard has higher cost performance, smaller volume and weight, and has a wider application prospect. The passive hydrogen atomic frequency standard is divided into a physical part and a circuit part. The physical part is the core device of the whole machine, and its performance determines the frequency stability of the hydrogen atomic frequency standard. As an important part of the physical part, the microwave cavity provi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01J23/20
Inventor 陈海波李晶刘亚轩刘朝华高连山
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT