EFR32ZG14 Z-Wave Long Range Radio
Board
BRD4206A Reference Manual
The BRD4206A Wireless Gecko Radio Board enables developers to develop Silicon
Labs Z-Wave
®
Long Range controller and gateway applications. The board contains a
Wireless Gecko Wireless System-on-Chip and it is optimized for operating at 14 dBm
output power. With the on-board SMA connector, conducted testing is supported, and it
also enables attachment of external whip antenna for radiated tests.
RADIO BOARD FEATURES
• Wireless SoC:
EFR32ZG14P231F256GM32
•
CPU core: ARM Cortex
®
-M4 with FPU
• Flash memory: 256 kB
• RAM: 32 kB
• Operation frequency: 863-876 MHz and
902-930 MHz
• Transmit power: 14 dBm
• Single SMA connector both for transmit
and receive
• Optional printed antenna
• Crystal for HFXO: 39 MHz
This document contains a brief introduction and description of the BRD4206A Radio
Board features, focusing on the RF section and performance.
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Table of Contents
1. Introduction ................................4
2. Radio Board Connector ...........................5
2.1 Introduction ...............................5
2.2 Radio Board Connector Pin Associations .....................5
3. Radio Board Block Summary .........................6
3.1 Introduction ...............................6
3.2 Radio Board Block Diagram .........................6
3.3 Radio Board Block Description ........................6
3.3.1 Wireless MCU.............................6
3.3.2 HF Crystal Oscillator (HFXO)........................6
3.3.3 Matching Network for Sub-GHz .......................6
3.3.4 SMA Connector ............................6
3.3.5 Printed Antenna ............................7
3.3.6 Radio Board Connectors .........................7
3.3.7 Serial EEPROM ............................7
4. RF Section ................................8
4.1 Introduction ...............................8
4.2 Schematic of the RF Section .........................8
4.3 RF Section Power Supply ..........................8
4.4 Bill of Materials for the Sub-GHz Matching.....................8
4.5 Printed Antenna .............................10
5. Mechanical Details .............................11
6. EMC Compliance ............................. 12
6.1 Introduction ...............................12
6.2 EMC Regulation Emission Limits ........................12
6.2.1 ETSI EN 300-200-1 Emission Limits for the 868-868.6 MHz Band ...........12
6.2.2 FCC15.247 Emission Limits for the 902-928 MHz Band ...............12
7. RF Performance ............................. 13
7.1 Conducted Power Measurements .......................13
7.1.1 Conducted Power Measurements ......................13
7.1.2 Conducted Power Measurements with Modulated Carrier ..............14
7.2 Radiated Power Measurements ........................15
7.2.1 Radiated Measurements .........................16
7.2.2 Antenna Pattern Measurements.......................18
8. EMC Compliance Recommendations ..................... 19
8.1 Recommendations for 868 MHz ETSI EN 300-220-1 compliance .............19
8.2 Recommendations for 908 MHz and 921 MHz FCC 15.247 compliance ...........19
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