MOBILE COMMUNICATIONS DIVISION
CUSTOMER SERVICES
Version 1.0 22/11/2006
Created by Konrad Szombara
Page 63 of 103
6.1.3 FREQUENCY PLAN
The TX frequency plan is shown below
TX frequency
plan
TX frequency
TX IF
TX RF LO
EGSM 900
880.2-914.8MHz 88.46-114.35MHz
1459.59-
1543.725MHz
GSM 1800
1710.2-
1784.8MHz
90.316-
104.776MHz
1354.737-
1414.482MHz
PCS 1900
1850.2-
1909.8MHz
97.379-
112.341MHz
1460.684-
1516.606MHz
Figure Receiver block frequency plan
General
RF circuit design is built based on SKYWORKS-74117 direction
conversion transceiver IC integrated by SAW filters, power amplifier with
control circuit, and Transmitter/receiver switch.
RF LO always requires 26MHz for reference provided with external XTAL
and internal oscillator circuits. And LO frequency is periodically re-tuning to
synchronize with cell or network.
Antenna
TS10‘s antenna is designed for embedded type and this design is fabricated
on a FPC. It supports triple band applications.
