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Only for training and service purposes
3. TECHNICAL BRIEF
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3.1 General Description
The U370 supports UMTS-2100, GSM-900, DCS-1800, and PCS-1900 based GSM/GPRS/UMTS. All
receivers and the UMTS transmitter use the radioOne
1
Zero-IF architecture to eliminate intermediate
frequencies, directly converting signals between RF and baseband. The quad-band GSM transmitters
use a baseband-to-IF upconversion followed by an offset phase-locked loop that translates the GMSK-
modulated signal to RF.
1
QUALCOMM’s branded chipset that implements a Zero-IF radio architecture.
3. TECHNICAL BRIEF
[Fig 1.1] Block diagram of RF part
Summary of Contents for U370
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