A Kind of Small Hydrogen Maser for Time-Keeping
Abstract
A kind of small hydrogen maser standard for timekeeping is being developed at Shanghai Observatory. The maser employs a cylindrical capacitively loaded cavity construction, resulting in significant size and weight reduction compared to a traditional hydrogen maser. The Q of the compact cavity is electronically enhanced by a suitable positive feedback into the cavity to enable sustained maser oscillation. The long-term stability of the maser is improved by a cavity frequency stabilization servo system. This paper describes the design and development of the maser, as well as photographs of the new maser system during the construction phase.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1991
- Accession Number
- ADA519697
Entities
People
- C. F. Lin
- H. X. Huang
- J. F. Lu
- J. W. He
- Z. C. Zhai