Title :
An experimental study for the compact hydrogen maser with a TE111 septum cavity
Author :
Wang, Qinghua ; Zhai, Zaocheng ; Zhang, Weiqun ; Lin, Chuanfu
Author_Institution :
Shanghai Obs., Acad. Sinica, Shanghai, China
Abstract :
We have made experiments on our compact active hydrogen maser with the cylindrical TE111-mode septum cavity, which is almost one-half the conventional TE011-mode cavity in size. An inductive radiation signal was observed, but the maser did not produce self-oscillation. The system supports oscillation when the cavity is placed in an external feedback loop.
Keywords :
atomic clocks; cavity resonators; feedback; frequency standards; hydrogen; masers; time measurement; H; TE111 septum cavity; compact active hydrogen maser; compact hydrogen maser; cylindrical TE111-mode septum cavity; external feedback loop; hydrogen clock; inductive radiation signal; oscillation; time/frequency standard; Feedback loop; Frequency; Hydrogen; Magnetic fields; Masers; Military communication; Observatories; Resonance; Space technology; Standards development;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
