User's Manual

HF-BL100-CU Low Energy Bluetooh（BLE 4.0）Module User Manual
Shanghai High Flying Electronics Technology Co., Ltd www.hi-flying.com - 16
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2.3. Mechanical size
HF-BL100-CU physical size （unit: mm）as below:
Module pad：size 22.8mm X 15.4mm ，pad space 1mm。
Figure 3. HF-BL100-CU Mechanical size
2.4. Antenna Layout
HF-BL100-CU support internal antenna. Antenna layout refer to Figure 4. Customer need to
obey following antenna design rules and module location suggestions:
 For user PCB, place module on the edge area of the PCB as possible, or suspend the
antenna area.
 Module antenna（22.8mmx7mm）correspondent area can‟t put components or paste
GND, the surrounding components or GND should be as far as possible from antenna
place.