A waveguide cavity for miniature Rb atomic clock

This paper is introduced a novel waveguide cavity for Rb atomic clock. In the cavity, a coupling ring shaped semi-circle imports RF signal from electronics, a screw regulator acts as a medium coupler to transmit microwave signal into absorption cell, and the both of the two parts construct a filter to suppress useless components except 6.8GHz. The RF signal can be high effectively produced in the cavity in this way. The waveguide cavity can be used to design miniature Rb atomic clock, and spread it to design chip scale atomic clock. furthermore.