SLWRB4104A

EFR32BG13 2.4 GHz 10 dBm Radio Board BRD4104A Reference Manual The BRD4104A Blue Gecko Radio Board enables developers to develop Bluetooth low RADIO BOARD FEATURES energy and proprietary wireless wireless applications. The board contains a 2.4 GHz Blue Gecko Wireless System on Chip and it optimized for operating at 10 dBm output power. Radiated and conducted testing is supported with the on-board printed antenna Wireless SoC: EFR32BG13P632F512GM48 and UFL connector. CPU core: ARM Cortex -M4 with FPU The BRD4104A Blue Gecko Radio Board plugs into the Wireless Starter Kit Mainboard, Flash memory: 512 kB which is provided with the Blue Gecko Starter Kit and gives access to display, buttons RAM: 64 kB and additional features from Expansion Boards. With the supporting Simplicity Studio Operation frequency: 2.4 GHz suite of tools, developers can take advantage of graphical wireless application develop- ment BGScript for Python-like scripting and visual energy profiling and optimization. Transmit power: 10 dBm The board also serves as an RF reference design for applications targeting 2.4 GHz Integrated PCB antenna, UFL connector wireless operation with 10 dBm output power. (optional). Crystals for LFXO and HFXO: 32.768 kHz This document contains brief introduction and description of the BRD4104A Radio and 38.4 MHz. Board features focusing on the RF sections and performance. silabs.com Smart. Connected. Energy-friendly. Rev. 1.0Table of Contents 1. Introduction................................1 2. Radio Board Connector ...........................2 2.1 Introduction...............................2 2.2 Radio Board Connector Pin Associations.....................2 3. Radio Board Block Summary .........................3 3.1 Introduction...............................3 3.2 Radio Board Block Diagram .........................3 3.3 Radio Board Block Description ........................3 3.3.1 Wireless MCU.............................3 3.3.2 LF Crystal Oscillator (LFXO) ........................3 3.3.3 HF Crystal Oscillator (HFXO)........................3 3.3.4 Matching Network for 2.4 GHz........................3 3.3.5 UFL Connector.............................4 3.3.6 Radio Board Connectors .........................4 3.3.7 Inverted-F Antenna ...........................4 3.3.8 Serial Flash..............................4 3.3.9 Serial EEPROM ............................4 4. RF Section ................................5 4.1 Introduction...............................5 4.2 Schematic of the RF Matching Network .....................5 4.2.1 Description of the 2.4 GHz RF Matching ....................5 4.3 RF Section Power Supply ..........................5 4.4 Bill of Materials for the 2.4 GHz Matching ....................5 4.5 Inverted-F Antenna............................6 5. Mechanical Details .............................7 6. EMC Compliance..............................8 6.1 Introduction...............................8 6.2 EMC Regulations for 2.4 GHz ........................8 6.2.1 ETSI EN 300-328 Emission Limits for the 2400-2483.5 MHz Band ...........8 6.2.2 FCC15.247 Emission Limits for the 2400-2483.5 MHz Band..............8 6.2.3 Applied Emission Limits for the 2.4 GHz Band ..................8 7. RF Performance ..............................9 7.1 Conducted Power Measurements .......................9 7.1.1 Conducted Measurements in the 2.4 GHz band..................9 7.2 Radiated Power Measurements........................10 7.2.1 Radiated Measurements in the 2.4 GHz band ..................10 8. EMC Compliance Recommendations ......................11 8.1 Recommendations for 2.4 GHz ETSI EN 300-328 compliance .............11 silabs.com Smart. Connected. Energy-friendly. Rev. 1.0