Low-power consumption spectral lamp device of rubidium atomic frequency standard

Abstract

The invention discloses a low-power consumption spectral lamp device of a rubidium atomic frequency standard. The device 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 drives the spectral lamp to produce pump light; the constant temperature sleeve is covered on the spectral lamp; the constant temperature control circuit is used for controlling the constant temperature sleeve to keep constant the temperature of the spectral lamp; the radio frequency oscillation circuit comprises a filtering circuit, an amplification circuit and an oscillation frequency selection circuit which are sequentially connected; the amplification circuit comprises a transistor, a first biasing resistor, a second biasing resistor and a positive temperature coefficient thermistor; the first biasing resistor is connected between the collector and base of the transistor; the second biasing resistor is connected in series with the first biasing resistor; and the positive temperature coefficient thermistor is connected in parallel with the second biasing resistor, and is arranged in the constant temperature sleeve. The spectral lamp device provided by the invention has low power consumption, is convenient to use, and can improve the output frequency stability of the atomic frequency standard.

Description

technical field [0001] The invention relates to the field of passive rubidium atomic frequency standards, in particular to a low-power spectrum lamp device for rubidium atomic frequency standards. Background technique [0002] The atomic frequency standard is a frequency source with excellent stability and accuracy, and has been widely used in the fields of satellite positioning, navigation and communication, instrumentation, and astronomy. The rubidium atomic frequency standard has become the most widely used atomic frequency standard because of its advantages of small size, light weight, low power consumption, and low cost. [0003] Among them, the spectral lamp that generates pump light is a key component of the atomic frequency standard, and its performance has a direct impact on the short-term and long-term frequency stability of the atomic frequency standard. Generally, the spectrum lamp device includes a spectrum lamp filled with metal rubidium and glow gas inside, a...

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Problems solved by technology

However, such a control method makes it very inconvenient to use

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