Rf Description; Receiver (Rx) - Nokia 6600 slide Service Manual

RM-414; RM-570
System Module
Figure 39 Bluetooth interface
The Bluetooth has a separate built in antenna and is powered by the regulated voltage VIO. For audio
applications the Bluetooth has a PCM data bus. In addition a UART (universal asynchronous receiver/
transmitter) is used for data communication and controls.

RF description

Receiver (RX)

An analogue signal is received by the phone's antenna. The signal is converted to a digital signal and is then
transferred further to the baseband (eg. to the earpiece).
The receiver functions are implemented in the RF ASIC.
Signals with different frequencies take different paths, therefore being handled by different components.
The principle of GSM and WCDMA is the same.
Issue 2 COMPANY CONFIDENTIAL Page 5 –17
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