WS2111-TR1

Introduction to WS2111-TR1

The WS2111-TR1 is a highly integrated, CMOS RF Amplifier designed for use in linear and multi-tone applications. It is suitable for 50, 70 and 90 MHz applications. The device features a high performance single stage linear amplifier, a fast response power detector circuit, and a low noise RF input stage with extensive output linearization. The output linearization allows the device to achieve the highest output power from any given input power. The WS2111-TR1 also features a wide dynamic range for both the linear and multi-tone applications.

Application Field

The WS2111-TR1 RF Amplifier is mainly used for linear and multi-tone applications. The wide dynamic range enables it to be used in applications such as:

• Communication systems
• Radar systems
• GPS systems
• Wearable medical devices
• Radio frequency identification (RFID) tags

In addition to these applications, the WS2111-TR1 can also be used in wireless local area networks, wireless home automation systems, and satellite communication systems.

Working Principle

The WS2111-TR1 RF amplifier is based on a single stage linear amplifier architecture. It uses two cascaded power transistors with FET input and output stages. The input stage includes a high gain, low noise, differential amplifier with an active bias network. This provides the signal conditioning and buffering for the amplifier. The output stage is a symmetrical push-pull pair with two low noise, high power transistors. The output stage bias network is used to set the operating point for maximum efficiency and output power.

The device also includes a power detector circuit that monitors the output signal of the amplifier and automatically adjusts the gain. This ensures that the amplifier operates at optimum efficiency and linearity at all times. The power detector also provides feed-forward correction for envelope tracking and increases the linearity of the amplifier. Finally, the output linearization circuit ensures that the amplifier produces the maximum output power at all times.

Conclusion

The WS2111-TR1 is a highly integrated, CMOS RF amplifier designed for use in linear and multi-tone applications. It features a high performance single stage linear amplifier, a fast response power detector circuit, and a low noise RF input stage with extensive output linearization. The power detector circuit and output linearization circuit ensures that the amplifier operates at optimum efficiency and linearity. The wide dynamic range of the device makes it suitable for a variety of applications such as communication systems, radar systems, GPS systems, wearable medical devices, and RFID tags.