User's Manual

TYBT5 user manual
5. Antenna Information
5.1 Antenna Type
Antenna can be connected using On-board PCB antenna only.
5.2 Reduce Antenna Interference
In order to have the best RF performance, It’s recommended to keep a minimum 15mm
distance between the antenna part and the other metal pieces.
Since PCBA manufacture use SMT process to weld TYBT5 module and other electrical
components onto the PCB board, RF performance will depend on the layout location and pattern of
the On-board PCB antenna. The following figures are some recommended and dis-recommended
demonstrations from out R&D team.
In demonstration 1 and 2 of figure 3, the on-board PCB antenna lays outside of the PCB frame
directly or PCB frame. It’s recommended to use layout pattern shown in demonstration 1 and 2.
Either the on-board PCB antenna lays outside of the PCB frame directly or PCB frame carve out a
certain area for the antenna. The overall PCBA performance for these two ways will be the same as
testing the module independently.
Restricted due to some reason, if the on-board PCB antenna layout has to be inside the PCB
frame, it’s suggested to refer to demonstration 3. The antenna lays inside the PCB frame, but no
copper or wire beneath the antenna. RF performance will have some loss, approximately 1~2 dBm.
It’s NOT recommended to use demonstration 4, the antenna lays inside the PCB frame, and
there are copper and wire beneath it. RF performance will have significant attenuation.
Demonstration 2: Antenna lay outside
the PCB frame with carved area
Demonstration 1: Antenna lay outside
the PCB frame
PCB
PCB