Communication card and communication device
US7043269B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2002 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Aug 13, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J2200/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication card or communication device is provided that includes an antenna for transmitting/receiving communication waves; a variable matching unit which can vary a circuit parameter; a directional coupling unit for extracting a reflected signal from the antenna; a detection unit for extracting the amplitude of the reflected signal; a control unit for outputting a control signal; an amplifier for amplifying a high frequency signal at a RF band; a frequency converter for converting an IF band signal into a RF band signal or a RF band signal into an IF band signal; a modulator/demodulator for modulating an IF signal to obtain a baseband signal at the transmission and demodulating an IF signal to obtain a baseband signal at the receiving; a baseband processor for processing the baseband signal; and a card interface for exchanging data with an information device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.