RNBD350 datasheet(36/56 Pages) MICROCHIP

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RNBD350

Physical Dimensions and Attributes

Data Sheet

DS70005561C - 36

• Position the RNBD350 module in a noise-free RF environment; keep it far away from high-

frequency clock signals and any other sources of RF energy.

• Do not shield the antenna with any metal objects.

• The power supply must be clean and noise-free.

• Ensure that the width of the traces routed to GND, VDD rails are sufficiently large for handling

peak TX current consumption.

Note: The RNBD350 module includes RF shielding on top of the board as a standard feature.

6.5.

RNBD350 Module Antenna Considerations

6.5.1.

PCB Antenna

For the RNBD350 module, the PCB antenna is fabricated on the top copper layer and covered in a

solder mask. The layers below the antenna do not have copper trace. It is recommended that the

module be mounted on the edge of the host board and to have no PCB material below the antenna

structure of the module and no copper traces or planes on the host board in that area.

The following table lists the technical specification of the PCB antenna when tested with the

RNBD350 module mounted on an Evaluation Board.

Table 6-1. PCB Antenna Specification for RNBD350 Module

Parameter

Specification

Operating frequency

2400 to 2500 MHz

Peak gain

2.9 dBi at 2430 MHz

Efficiency

50%

PCB Antenna Radiation Pattern

The following figures illustrate the antenna radiation patterns for RNBD350 module.

Figure 6-3. RNBD350 Antenna Radiation Pattern when Phi = 0°

Angle (°)

180

210

240

270

120

300

150

330

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