
NE866B1_Hardware_Design_Guide
1VV0301354 Rev. 6
Page
48
of
70
2018-02-28
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If you don't have EM noisy devices around the PCB of NB866B1, by using a micro
strip on the superficial copper layer for the antenna line, the line attenuation will be
lower than a buried one;
The following image is showing the
suggested layout for the
Antenna pad connection
(dimensions in mm):
NOTE:
In early samples of NE866B1 the
antenna pad has a closed ring around it
as shown below
In that case, the RF pin (G2) should be
routed through an internal layer of the
board connecting to the PAD on the top
layer ideally through a BLIND via. VIA
diameter should be chosen to achieve
best coaxiality effect thorugh the board.
It is also recommended to bring directly
to the reference RF ground layer the
GND signal present on PADs F1,
F2,F3, G1 and G3.
6.5.3.
Antenna installation Guidelines
Install the antenna in a place covered by the LTE signal.
Antenna shall not be installed inside metal cases.
Antenna shall be installed also according to antenna manufacturer instructions.