Method and apparatus for transmitting and receiving signals
US6628927B1 · kind B1 · utility
7Cited by
21References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1997 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Dec 19, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/71365
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for receiving a radio frequency signal and a method and apparatus for transmitting a modulation signal in a multiple channel radio system. The method for receiving the radio frequency signal involves mixing the radio frequency signal with a demodulating signal, tunable in frequency steps greater than the channel spacing of the multiple channel radio system to facilitate rapid frequency adjustments. The resultant intermediate signal is then mixed with another demodulating signal, tunable in relatively smaller frequency steps in order to select the channel containing the radio frequency signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.