Abstract: The physics package is the core of atomic frequency standard, and temperature sensitivity is the most signification limitation to improve the frequency stability of rubidium frequency standard(RFS). In this paper, researched on the basis of analysis of the affection of temperature fluctuation to the frequency stability of RFS, a kind of physics package was designed and its physical properties were studied to validate the reduction of its temperature sensitivity.

Key words: Rubidium frequency standard, Physics package, Temperature sensitivity