RF2948B is a transceiver designed for direct sequence spread spectrum systems working in the 2.4 GHz ISM frequency band. It is suitable for applications in IEEE 802.11b WLAN, high-speed digital links, wireless home gateways, secure communication links, wireless security systems, and digital cordless phones. .
The main technical features are as follows:
·45～500 MHz IF quadrature demodulator;
·There is a programmable baseband filter on-chip;
· Provide QPSK modulator and up-converter;
·The power supply voltage is 2.7～3.6 V.
RF2948B application circuit
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