Improved rubidium atomic frequency standard spectral lamp device

Abstract

The invention discloses an improved rubidium atomic frequency standard spectral lamp device which comprises a spectral lamp, a radio frequency oscillation circuit, a constant temperature sleeve and a constant temperature control circuit, wherein the radio frequency oscillation circuit comprises a filter circuit, an amplifying circuit, an oscillation frequency selection circuit, a temperature compensation circuit and a feedback resistor which are sequentially connected; the amplifying circuit comprises a transistor and a first bias resistor, wherein the two ends of the first bias resistor are respectively connected with a transistor collector and a transistor base; the temperature compensation circuit is used for reducing the current change of the transistor collector with temperature; one end of the temperature compensation circuit is connected with the first bias resistor, and the other end and a connection point of the transistor base are connected with an input end of the radio frequency oscillation circuit; the feedback resistor is connected in series with the emitter of the transistor; and the transistor and the temperature compensation circuit are located in the same temperature zone. The spectral lamp device disclosed by the invention can improve the stability of the rubidium atomic frequency standard output frequency.

Description

technical field [0001] The invention relates to the field of passive rubidium atomic frequency standards, and more specifically relates to an improved rubidium atomic frequency standard spectral lamp device. Background technique [0002] An atomic frequency standard is a device that provides standard frequency and time. The rubidium atomic frequency standard has become the most widely used atomic frequency standard because of its small size, low power consumption and good ability to withstand harsh environments. It also has good indicators and can meet the needs of most military and civil projects. It can be used in engineering fields such as early warning aircraft, fighter aircraft, electronic countermeasures, third-generation mobile communication technology networks, and power monitoring. [0003] In the rubidium atomic frequency standard, the spectral lamp that generates the pump light is the key component of the atomic frequency standard. The light intensity and spectr...

AI Technical Summary

Problems solved by technology

The transistor in this circuit is greatly affected by the ambient temperature. As the ambient temperature rises, the collector current in the transistor will increase, which will lead to an increase in the excitation power, which in turn will lead to an increase in the light intensity of the spectrum lamp. On the contrary, the decrease

The light intensity of the spectral lamp is proportional to the movement of the atomic transition frequency of the rubidium atomic frequency standard, that is, the optical frequency shift. Therefore, when the light intensity increases, the optical frequency shift of the rubidium atomic frequency standard is greater, thus affecting the output frequency of the atomic frequency standard. stability

Since the existing radio frequency oscillation circuit cannot perform temperature compensation to reduce the optical frequency shift, it will affect the output frequency stability of the rubidium atomic frequency standard

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