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
ParameterSpecification
Operating frequency2400 to 2500 MHz
Peak gain2.9 dBi at 2430 MHz
Efficiency50%

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°
Figure 6-4. RNBD350 Antenna Radiation Pattern when Phi = 90°
Figure 6-5. RNBD350 Antenna Radiation Pattern when Theta = 90°
Figure 6-6. RNBD350 Antenna Radiation 3D Pattern