Data Sheet
Table Of Contents
- 页面提取自－3T-Zigbee Users Manual OK
- 3T-Zigbee Users Manual OK
- 1.1. Introduction
- 1.2. Application
- 1.3. Main Characteristics
- 1.4. Product Advantage
- 1.5. Abbreviations
- 2. Product Overview
- 3. Technical Specification
- 4.BLE transparent interface protocol
- 5. Ordering information
- 6. Contact Us
- 12 -
3.4. 天线规格 Antenna Specification
REX3T
has integrate different antennas, with details below:
3.4.1. PCB Antenna
Figure 3-4. PCB Antenna
With PCB antenna, there are points to be noted:
1.
Avoid placing modules in a metal shell.
2. Keep metal object from the PCB antenna (at least 1cm above, 2.7cm plus recommend).
3.
Do not keep module nearby the devices with electromagnetic radiation source, such as transformers.
The design of a user's PCB should prevent the module’s
PCB antenna from the interference of its components, traces and
bottom. The basic principles are:
No traces, bottom around the PCB antenna with no
other components placed
The PCB antenna shall be out of PCB board
Do not cover the PCB antenna with metal shell