Multi-mode wireless communication system
US6269253A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1998 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Sep 28, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/406
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-mode wireless system having a modulator (11) for modulating two system signals (low frequency signals for the GSM system and high frequency signals for the DCS1800 system), a first local oscillator (14) for oscillating a signal of a predetermined frequency, a n-divider (15) for dividing a signal from the first local oscillator by a factor of n, a high frequency mixer (13) for converting a signal to a high frequency side output (17) according to a signal output from the first local oscillator (14) and a signal output from the modulator (11), and a low frequency mixer (12) for outputting a signal to a low frequency mixer (16) according to an n-divided signal and a signal from the modulator (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.