Chengdu Ebyte Electronic Technology Co., Ltd
E21-400G37 User Manual
Copyright ©2012–2019, hengdu Ebyte Electronic Technology Co., Ltd
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Chapter I Overview
1.1 Introduction
E21-400G37S is a pure hardware RF medium power amplifier (PA)
launched by Chengdu Yibaite Company. The maximum output power is 37dBm,
covering the frequency range of 410~493MHz. The module has a built-in
LNA low noise amplifier, which greatly improves the communication
distance between wireless networks.
The imported high-quality PA chip+our unique design scheme can
greatly improve the working efficiency of PA, lower the working
temperature, and enable continuous data transmission under the ambient
temperature of - 40 -+85 degrees. Built in LNA low noise amplifier,
filter, limiting device, low noise figure, improve the receiving
sensitivity of the receiving channel, and expand the communication distance.
Ultra low power consumption design, standby current is only 3uA, control mode is simple, only two I/O ports
are required for receiving and transmitting control switching, SOP chip design mode, ultra small size, very easy
to embed, the entire scheme is designed according to industrial grade, and the back is large area of bare copper,
customers can simply and reasonably add appropriate heat dissipation treatment according to requirements. Ultra
high stability, suitable for a variety of application scenarios, has been widely used in various industries, with
stable performance, long transmission distance, strong penetration and diffraction ability, etc.
1.2 Features and functions
Under ideal conditions, the communication distance can reach 20km;
The maximum transmission power is 37dBm;
410~493MHz frequency band;
High efficiency PA power amplifier, with PA efficiency above 40%;
LNA low noise amplifier, sensitivity increased by 14-17dB;
Built in amplitude limiting device to limit the input power amplitude of the receiving channel;
Ultra low power consumption design, standby current is only 3uA;
Support 3.3~5.5V internal control power supply and 7.5V PA power supply;
Industrial standard design, supporting long-term use at - 40~+85 ℃;
The installation of stamp hole patch is conducive to integration and mass production.
