Rf And Antenna Integration - Sony Ericsson GR 47 Design Manuallines

All manuals and user guides at all-guides.com
It is also used as an ear-piece driver for the Portable Hands Free
accessory.
4
Zout (0.3 – 3.5 kHz)
Output capacitance
5
Levels
(THD<5%)

3.6 RF and antenna Integration

The rules for RF and antenna integration are general good practice
guidelines i.e.
•
•
•
If these are followed there should be no issues in terms of RF. For a
more extensive guide please see the integrators manual.
Please also see section 6.6 regarding SAR.
Output impedance includes impedance of EMC filter which is 100 Ω.
4
5
Need to check output drive levels with 100R EMI filter.
BA/SEM/MS 03:0015 Rev A
GR47/48 Design Guidelines
Drive capability into 5 kΩ (0.3 – 3.5 kHz)
Drive capability into1.5 kΩ (0.3 – 3.5 kHz)
Drive capability into 150 Ω (at 1 kHz)
Table 2. AFMS Levels. Audio Levels
Ensure the antenna is a good 50Ω match across the GSM 900/1800
bands for GR47 and GSM 850/1900 bands for GR48.
Antenna installation should be, where possible, not close to large
metal objects as this will affect the matching mentioned above.
A specifically designed antenna for the GSM signals being
operated at will ensure the best reception.
LZT 123 7596
≅ 120 Ω
2.2 µF
> 2.4 Vpp [TBC]
> 2.2 Vpp [TBC]
> 1.3 Vpp [TBC]
17