Table of Contents
Advertisement
3. TECHNICAL BRIEF
3. TECHNICAL BRIEF
3.1 General Description
The U300 supports UMTS-2100 DS-WCDMA, EGSM-900, DCS-1800, and PCS-1900.
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 EGSM, DCS1800 and
PCS1900 transmitters use a baseband-to-IF upconversion followed by an offset phase-locked loop
that translates the GMSKmodulated signal to RF.
U300 high-level RF functional block diagram
1
QUALCOMM's branded chipset that implements a Zero-IF radio architecture.
- 17 -
Advertisement
Table of Contents
Troubleshooting
