Radio wave receiving apparatus, radio wave receiving circuit and radio wave timepiece
US7729681B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2006 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Mar 31, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04R20/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In the radio-wave receiving apparatus according to the invention, a signal received by a receiving antenna is amplified and the amplified received signal is input into a multi-stage frequency conversion circuit including a plurality of basic circuits connected in series. The multi-stage frequency conversion circuit converts the frequency of the received signal from the antenna into frequencies based on signals input from the frequency divider circuit sequentially, thereby to output a signal “a” which is obtained by conversions into gradually lower frequencies. Detection is performed by a detection circuit on the basis of the signal. Thereby, a radio-wave receiving apparatus which requires no local oscillating circuit nor a PLL circuit and is also stable in operation and high in accuracy is realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.