AN4356 Datasheet, PDF (2/14 Pages) STMicroelectronics – Antenna desense on handheld equipment

EMI and noise issues
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EMI and noise issues
AN4356
Inside handheld applications the different subsets talk together or with the exterior world
using various links (Figure 1).
Figure 1. Handheld equipment schematic
RF
GSM, WCDMA, etc.
LCD
Communication
processor
Display controller
Application processor
Camera module
Memory card
USB
HDMI
MHL
Internal links
External links
Standards used in mobile applications present high data rates. Here are some examples of
speeds per data lane:
• MIPI D-PHY up to 1 Gbps
• HDMI 1.4 up to 3.35 Gbps
• MHL 1.0 up to 2.25 Gbps
• Display Port 1.2 up to 2.7 Gbps
• USB 2.0 up to 480 Mbps
• SD 4.0 up to 3.6 Gbps
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