Hardware Development Guide of Module Product
36
All Rights reserved, No Spreading abroad without Permission of ZTEWelink
5.3.1
Sourceless Index
The sourceless indexes of antenna are different according to the different
requirements of wireless Internet products. Here, taking the 3G Internet notepad as
an example, the sourceless index of the antenna is recommended to reach the
standards as described below.
Table 5-1 Sourceless Index of Main Antenna (Recommended)
Frequency Band
824-960MHz
1710-2170MHz
VSWR in Free Space
<3:1
<3:1
Peak Gain in Free Space
>0dBi
>0dBi
3-D Average Gain in Free
Space
-3dBi
-3dBi
Antenna Efficiency
>50%
>50%
5.3.2
Sourced Index
The sourced indexes of antenna are different according to the different
requirements of the product type. Here, taking the 3G Internet notepad as an
example, the sourced index of the antenna is recommended as below.
TRP: <W850/W900/W1900/W2100>18dBm;
GSM850>27dBm, GSM900>27dBm;
DCS1800>24dBm, PCS1900>24dBm>;
TIS: <W850/W900<-100dBm; W1900/W2100<-103dBm;
GSM850<-100dBm, GSM900<-100dBm;
DCS1800/PCS1900<-102dBm.