Frequency signal generation apparatus and frequency signal generation system
US10812093B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2018 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Oct 26, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04F5/145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A frequency signal generation apparatus includes an atom cell including a first part including gaseous alkali metal atoms and a second part including liquid alkali metal atoms. A first temperature controller controls the first part's temperature. A second temperature controller controls the second part's temperature to be lower than that of the first part. First and second temperature detectors respectively detect the first and second parts' temperatures. The first temperature controller and the second temperature detector are thermally connected. The second temperature controller and the first temperature detector are thermally connected. The phase of a temperature control loop of the first part including the first temperature controller and the first temperature detector and the phase of a temperature control loop of the second part including the second temperature controller and the second temperature detector are different.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.