Silicon Laboratories EFR32FG14 Reference Manual
2400/434 mhz dual band 10 dbm radio board
Hide thumbs
Also See for EFR32FG14:
- User manual (35 pages) ,
- Reference manual (21 pages) ,
- User manual (35 pages)
Table of Contents
Advertisement
Quick Links
EFR32FG14 2400/434 MHz Dual Band
10 dBm Radio Board
BRD4259A Reference Manual
The BRD4259A Flex Gecko Radio Board enables developers to develop proprietary
wireless applications. The board contains a dual-band Flex Gecko Wireless System-on-
Chip and it is optimized for operating at 10 dBm output power. For the 2.4 GHz band
with the on-board printed antenna and UFL connector, radiated and conducted testing is
supported. For the 434 MHz band, the on-board SMA connector enables conducted
testing and attachment of external whip antenna for radiated tests.
The BRD4259A Flex Gecko Radio Board plugs into the Wireless Starter Kit Mainboard,
which is included with the Flex Gecko Starter Kit and gives access to display, buttons
and additional features from Expansion Boards. With the supporting Simplicity Studio
suite of tools, developers can take advantage of graphical wireless application develop-
ment and visual energy profiling and optimization. The board also serves as an RF ref-
erence design for applications targeting 2.4 GHz and 434 MHz dual band wireless oper-
ation with 10 dBm output power.
This document contains a brief introduction and description of the BRD4259A Radio
Board features, focusing on the RF sections and performance.
silabs.com | Building a more connected world.
RADIO BOARD FEATURES
• Wireless SoC:
EFR32FG14P233F256GM48
• CPU core: ARM Cortex
®
-M4 with FPU
• Flash memory: 256 kB
• RAM: 32 kB
• Operation frequency: 2.4 GHz + 434 MHz
• Transmit power: 10 dBm
• 2.4 GHz: Integrated PCB antenna, UFL
connector (optional)
• 434 MHz: Single SMA connector both for
transmit and receive
• Crystals for LFXO and HFXO: 32.768 kHz
and 38.4 MHz
• 8 Mbit low-power serial flash for over-the-
air updates
Rev. 1.00
Advertisement
Table of Contents
Related Manuals for Silicon Laboratories EFR32FG14
Summary of Contents for Silicon Laboratories EFR32FG14
- Page 1 EFR32FG14 2400/434 MHz Dual Band 10 dBm Radio Board BRD4259A Reference Manual The BRD4259A Flex Gecko Radio Board enables developers to develop proprietary wireless applications. The board contains a dual-band Flex Gecko Wireless System-on- RADIO BOARD FEATURES Chip and it is optimized for operating at 10 dBm output power. For the 2.4 GHz band with the on-board printed antenna and UFL connector, radiated and conducted testing is •...
-
Page 2: Table Of Contents
Table of Contents 1. Introduction ....... . 4 2. Radio Board Connector ......5 2.1 Introduction. - Page 3 7.1.1 Conducted Measurements in the 434 MHz Band ....14 7.1.2 Conducted Measurements in the 2.4 GHz Band ....15 7.2 Radiated Power Measurements .
-
Page 4: Introduction
BRD4259A Reference Manual Introduction 1. Introduction The EFR32 Flex Gecko Radio Boards provide a development platform (together with the Wireless Starter Kit Mainboard) for the Silicon Labs EFR32 Flex Gecko Wireless System-on-Chips and serve as reference designs for the matching networks of the RF interfaces. The BRD4259A Radio Board supports dual-band operation with its integrated sub-GHz ISM band and 2.4 GHz band transceivers. -
Page 5: Radio Board Connector
EFR32FG14 data sheet. 2.2 Radio Board Connector Pin Associations The figure below shows the mapping between the connector and the EFR32FG14 pins and their function on the Wireless Starter Kit Mainboard. -
Page 6: Radio Board Block Summary
The BRD4259A Radio Board incorporates a sub-GHz matching network which connects both the sub-GHz TX and RX pins of the EFR32FG14 to the SMA connector to be able to transmit and receive with one antenna. The component values have been optimized for the 434 MHz band RF performance and current consumption with 10 dBm output power. -
Page 7: Matching Network For 2.4 Ghz
3.3.5 Matching Network for 2.4 GHz The BRD4259A Radio Board incorporates a 2.4 GHz matching network which connects the 2.4 GHz TRX pin of the EFR32FG14 to the one on-board printed Inverted-F antenna. The component values were optimized for the 2.4 GHz band RF performace and current con- sumption with 10 dBm output power. -
Page 8: Rf Section
BRD4259A Reference Manual RF Section 4. RF Section 4.1 Introduction This section gives a short introduction to the RF section of the BRD4259A Radio Board. 4.2 Schematic of the RF Matching Network The schematic of the RF section of the BRD4259A Radio Board is shown in the following figure. 2.4 GHz Matching Network Path Selection Inverted-F... -
Page 9: Bill Of Materials For The 2.4 Ghz Matching
BRD4259A Reference Manual RF Section Table 4.1. Bill of Materials for the BRD4259A Sub-GHz RF Matching Network Component Name Value Manufacturer Part Number 75 nH Murata LQW18AN75NG00D 470 nH Murata LQW18CNR47J00D 470 nH Murata LQW18CNR47J00D 18 nH Murata LQW15AN18NG00D 18 nH Murata LQW15AN18NG00D 24 nH... - Page 10 BRD4259A Reference Manual RF Section Figure 4.2. Impedance and Reflection of the Inverted-F Antenna of the BRD4259A Board Measured from the Matching Output silabs.com | Building a more connected world. Rev. 1.00 | 10...
-
Page 11: Mechanical Details
BRD4259A Reference Manual Mechanical Details 5. Mechanical Details The BRD4259A Radio Board is illustrated in the figures below. 2.4 GHz Matching Connector DC-DC LFXTAL Inductor DC-DC 2.4 GHz Path & Selection Supply EFR32xx Filter Sub-GHz Caps. 30 mm Matching Printed and Filter Inverted-F Antenna... -
Page 12: Emc Compliance
BRD4259A Reference Manual EMC Compliance 6. EMC Compliance 6.1 Introduction Compliance of the fundamental and harmonic levels of the BRD4259A Radio Board is tested against the following standards: • 434 MHz: • ETSI EN 300-220-1 • 2.4 GHz: • ETSI EN 300-328 •... -
Page 13: Applied Emission Limits For The 2.4 Ghz Band
BRD4259A Reference Manual EMC Compliance 6.5 Applied Emission Limits for the 2.4 GHz Band The above ETSI limits are applied both for conducted and radiated measurements. The FCC restricted band limits are radiated limits only. In addition, Silicon Labs applies the same restrictions to the conducted spec- trum. -
Page 14: Rf Performance
BRD4259A Reference Manual RF Performance 7. RF Performance 7.1 Conducted Power Measurements During measurements, the BRD4259A Radio Board was attached to a Wireless Starter Kit Mainboard which was supplied by USB. The voltage supply for the Radio Board was 3.3 V. 7.1.1 Conducted Measurements in the 434 MHz Band The BRD4259A Radio Board was connected directly to a Spectrum Analyzer through its SMA connector. -
Page 15: Conducted Measurements In The 2.4 Ghz Band
BRD4259A Reference Manual RF Performance 7.1.2 Conducted Measurements in the 2.4 GHz Band The BRD4259A Radio Board was connected directly to a Spectrum Analyzer through its UFL connector (the R1 resistor was removed and a 0 Ohm resistor was soldered to the R2 resistor position). The supply for the RF section (RFVDD) and the 2.4 GHz power amplifi- er (PAVDD) was 1.8 V provided by the on-chip DC-DC converter;... -
Page 16: Radiated Power Measurements
BRD4259A Reference Manual RF Performance 7.2 Radiated Power Measurements During measurements, the BRD4259A Radio Board was attached to a Wireless Starter Kit Mainboard which was supplied by USB. The voltage supply for the Radio Board was 3.3 V. The radiated power was measured in an antenna chamber by rotating the board 360 de- grees with horizontal and vertical reference antenna polarizations in the XY, XZ and YZ cuts. -
Page 17: Radiated Measurements In The 434 Mhz Band
BRD4259A Reference Manual RF Performance 7.2.1 Radiated Measurements in the 434 MHz Band For the 434 MHz radiated power measurements, an external whip antenna (P/N: ANT-433-CW-QW-SMA) was used as a transmitter antenna. It was connected to the SMA connector of the BRD4259A Radio Board. The supply for the RF section (RFVDD) and the sub- GHz power amplifier (SUBGRF_ON, SUBGRF_OP) was 1.8 V provided by the on-chip DCDC converter (for the sub-GHz PA it was provided as VBIAS through the discrete balun);... -
Page 18: Emc Compliance Recommendations
BRD4259A Reference Manual EMC Compliance Recommendations 8. EMC Compliance Recommendations 8.1 Recommendations for 434 MHz ETSI EN 300-220-1 Compliance As it was shown in the previous chapter, the BRD4259A Flex Gecko Radio Board with 10 dBm output power is compliant with the emis- sion limits of the ETSI EN 300-220-1 regulation. -
Page 19: Board Revision History
BRD4259A Reference Manual Board Revision History 9. Board Revision History Table 9.1. BRD4259A Radio Board Revisions Radio Board Revision Description Updating EFR revision to Rev. B. Initial revision. Note: The silkscreen marking on the board (e.g. PCBxxxx A00) denotes the revision of the PCB. The revision of the actual Radio Board is laser printed in the 'Board Info' field on the PCB. -
Page 20: Errata
BRD4259A Reference Manual Errata 10. Errata There are no known errata at present. silabs.com | Building a more connected world. Rev. 1.00 | 20... -
Page 21: Document Revision History
BRD4259A Reference Manual Document Revision History 11. Document Revision History Revision 1.00 2017-10-26 Initial document revision. silabs.com | Building a more connected world. Rev. 1.00 | 21... - Page 22 Trademark Information Silicon Laboratories Inc.® , Silicon Laboratories®, Silicon Labs®, SiLabs® and the Silicon Labs logo®, Bluegiga®, Bluegiga Logo®, Clockbuilder®, CMEMS®, DSPLL®, EFM®, EFM32®, EFR, Ember®, Energy Micro, Energy Micro logo and combinations thereof, "the world’s most energy friendly microcontrollers", Ember®, EZLink®, EZRadio®, EZRadioPRO®, Gecko®, ISOmodem®, Micrium, Precision32®, ProSLIC®, Simplicity Studio®, SiPHY®, Telegesis, the Telegesis Logo®, USBXpress®, Zentri and others are trademarks or registered...
Need help?
Do you have a question about the EFR32FG14 and is the answer not in the manual?
Questions and answers