Data Sheet
Table Of Contents
- Abstract
- 1. Introduction
- 2. Pin Definition
- 3. Memory Space Allocation
- 4. Work Mode Selection
- 5. Electrical Parameter
- 6. Antenna Information
- 7. Assembly Size and PCB Package
- 8. Reference Circuits and Typical Applications
- 9. FCC and IC Information
- 10. Production Guidelines
- Appendix 1: Sales and Technical Support Information
EMW3076 Series Wireless Module Data Manual
Copyright of Shanghai MXCHIP Information Technology Co., Ltd.
6
Antenna Information
The EMW3076 has two specifications, PCB antenna and external antenna. Please refer to the order code
for ordering. The IPX antenna connector is not soldered to the module using the PCB antenna. Better RF
performance can be achieved by connecting an external antenna through an IPX connector.
PCB Antenna Parameters and Use
6.1.1. PCB Antenna Use Points
When using the PCB antenna on the module, you need to ensure that the distance between the
motherboard PCB and other metal devices, connectors, PCB vias, traces, and copper is at least 16mm.
The shaded areas in the figure below need to be kept away from metal components, sensors, sources of
interference, and other materials that may cause signal interference.
Figure 4 PCB Antenna Minimum Clearance Area（unit：mm）
External Antenna Parameters and Use
Users can select 2.4G antennas with different external dimensions and gains of no more than 2dBi
depending on the application environment.
When using an external antenna, be careful to power on the starter module after connecting the antenna.
Because the module will perform IQ calibration after power-on, send a single carrier through the PA to
detect the signal through the RX loop. If the load is unloaded (the antenna is not connected), it will cause
a calibration error, making the output power of the PA abnormal, and forming a large standing wave at
the PA output, possibly damaging the internal device.