Tx Introduction; Main Tx Component - Nokia 1265 Description And Troubleshooting

1265 (RH-103)
RF Description and Troubleshooting

Tx Introduction

The QSC6010 (Figure 3) provides the Zero-IF transmit signal path for Cellular-CDMA transmission. For this chipset, Cellular-CDMA refers
to band classes 0 and 3 as defined by the cdma2000 standard, with mobile station transmitters operating between 824 and 849 MHz. The
transmit signal path includes baseband amplifiers, quadrature upconversion, gain control RF amplification, and an output driver amplifier.
The driver amplifier output is routed to the final stages of the transmit chain – power amplifier, direction coupler, duplexer, and antenna.

Main Tx Component

QSC6010 Single chip
Page 6
Figure 4: Tx components
© 2006 Nokia Corporation Company Confidential
Front End Module
(Duplexer/PA/Coupler)
Issue 1 04/2007