Silicon Laboratories BRD4257A Reference Manual

19 dBm Radio Board BRD4257A Reference Manual The BRD4257A 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 19 dBm output power. For the 2.4 GHz band with the on-board printed antenna a ...

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Radio Board Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Radio Board Connector Pin Associations. . . . . . . . . . . . . . . . . . . . . 5 3. Radio ...

. . . . . . . . . . . . . . .13 7.1.2 Conducted Measurements in the 2.4 GHz Band . . . . . . . . . . . . . . . .14 7.2 Radiated Power Measurements . . . . . . . . . . . . . . . . . . . . . . . .15 7.2.1 Radiated Measurements in the 915 MHz Band . . . . . . . . . . . . . . . . .16 7.2.2 Radiated Measurem ...

Labs EFR32 Flex Gecko Wireless System-on-Chips and serve as reference designs for the matching networks of the RF interfaces. The BRD4257A Radio Board supports dual-band operation with its integrated sub-GHz ISM ...

2.1 Introduction The board-to-board connector scheme allows access to all EFR32FG14 GPIO pins as well as the RESETn signal. For more information on the functions of the available pins, see the EFR32FG14 data sheet. 2.2 Radio Board Connector Pin Associations The figure below shows the mapping between the connector and the EFR32FG14 ...

3.1 Introduction This section gives a short introduction to the blocks of the BRD4257A Radio Board. 3.2 Radio Board Block Diagram The block diagram of the BRD4257A Radio Board is shown in the figure below. EFR32 Inverted-F PCB Antenna 2.4 GHz RF UFL Connector LF Crystal 32.768k HF Crystal 38.4M Radio Board Connectors 8 Mbit MX ...

The BRD4257A 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 have been optimized for the 2.4 GHz band RF performance and cur- rent consumption with 19 dBm output power. For a detailed description of ...

4.1 Introduction This section gives a short introduction to the RF section of the BRD4257A Radio Board. 4.2 Schematic of the RF Matching Network The schematic of the RF section of the BRD4257A Radio Board is shown in the following figure. GND GND GND GND VBIAS GND C1 C6 C10 L2 C3 C7 P2 U.FL 3 2 1 C4 Ground RF I/O RF Crystal RF Analog Power P ...

Component Name Value Manufacturer Part Number L3 3.3 nH Murata LQW15AN3N3B80D L4 3.3 nH Murata LQW15AN3N3B80D L5 18 nH Murata LQW15AN18NG00D L6 10 nH Murata LQW15AN10NJ00D L7 10 nH Murata LQW15AN10NJ00D C3 1.8 pF Murata GRM1555C1H1R8WA01D C4 1.8 pF Murata GRM1555C1H1R8WA01D C5 3.9 pF ...

BRD4257A Reference Manual RF Section silabs.com | Building a more connected world. Rev. 1.00 | 10 ...