Hardware Guide
Table Of Contents
- Fibocom_FM101-CG_Hardware_Guide_V1.0.pdf
- FM101-CG-20: Hardware Guide
- Contents
- Change History
- 1. Foreword
- 2. Product Overview
- 3. Pin Definition
- 4. Electrical Characteristics
- 5. Functional Interface
- 6. Radio Frequency
- 6.1. RF Interface
- 6.2. Operating Bands
- 6.3. Transmitting Power
- 6.4. Receiving Sensitivity
- 6.5. GNSS Receiving Performance
- 6.6. Antenna Design
- 6.7. PCB Routing Design
- 6.8. Main Antenna Design
- 6.9. Diversity and MIMO Antenna Design
- 6.10. GNSS Antenna Design
- 6.11. Other Interfaces
- 7. Thermal Design
- 8. Electrostatic Protection
- 9. Structural Specifications
- Appendix A: Acronyms and Abbreviations
- Module FCC & ISED警语 for Fibocom
Figure 26. Location of the signal point and GND point of PIFA
•
Main board
There is complete paving in the antenna projection area. Do not place any
component in the antenna area. The recommended length of PCB board should be
90 mm to 110 mm. The antenna performance is better if the board length is 105
mm.
•
Structure of PIFA antenna
◦
Bracket
The antenna consists of plastic bracket and metal sheet (radiator). Plastic
bracket and metal sheet are fixed by hot melt method. The plastic is made of
BS or PC material, the metal sheet is beryllium copper, phosphor copper, or
stainless steel. If you want to use FPC, add two pins in the main board, which
boasts a higher cost.
◦
Attached
Attach the metal sheet (radiator) to the back cover of the module.
•
Feed point of PIFA antenna
The feeding point must be greater than 2mm × 3mm. Try to place it at the edge of
the PCB board, and adopt round shape. Square with rounded corners is also
preferred. The distance between feeding point pad and ground should be equal to
or greater than 1mm.
6. Radio Frequency
Copyright © Fibocom Wireless Inc. 53