Pwb Outline; Rf Description; Frequency Band, Power And Multi-Slot Class; Transmitter Architecture Description - Nokia RH-99 Service Manual

PWB outline

RF description

Frequency band, power and multi-slot class

The requirements leads to the specification in the table below:
System
GSM850
GSM900
GSM1800
GSM1900

Transmitter Architecture Description

The transmitter in DRP2 is based on the frequency synthesizer with a direct frequency/phase modulation
capability. The frequency synthesizer is implemented as an All Digital PLL (ADPLL), where the FCW is digital
modulated by filtered TX data. The fundamental frequency of the RF oscillator in the ADPLL is running around
3.6GHz, which is divided by 4 or 2 to generate CW frequencies in the lower and upped bands of interest. The
TX data are feed into two points of the ADPLL. The GMSK modulated output signal of the ADPLL block are fed
into Pre-Power Amplifier (PPA) buffer.
Page 6 –14
Figure 84 PWB top side component placement
Table 10 Frequency bands and TX power class
Frequency band
Tx: 824 - 849 MHz
RX: 869 - 894 MHz
Tx: 880 – 915 MHz
Rx: 925 – 960 MHz
Tx: 1710 – 1785 MHz
Rx: 1805 – 1880 MHz
Tx: 1850 - 1910 MHz
Rx: 1930 - 1990 MHz
COMPANY CONFIDENTIAL
Copyright © 2007 Nokia. All rights reserved.
RH-99; RH-100; RH-105; RH-106
System module
TX power class
4 (33 dBm)
4 (33dBm)
1 (30dBm)
1 (30 dBm)
Issue 2