The Research And Authentication Of The RF Power Amplifiers Based On Imote2 Wireless Sensor Network Platform

Wireless sensor networks are a new type of information acquisition and processing technology, a combination of micro smart sensor technology, embedded computingtechnology, distributed information processing technology with low power consumption and other technology to the distribution network within the area of environmental or Detection of objects to achieve real-time monitoring of information, perception and acquisition, and this information can be processed to obtain more detailed and accurate information, and then transfer this information to the informationneeds of users.Wireless sensor network system can be widely used in national defense andindustrial process control, national security, environmental monitoring and other fieldsHowever, with modern digital mobile communication technology boom, the user of wireless communication devices increasingly high performance requirements, to achieve stability in various environments, high-speed data transmission is the future mobile communication systems the main objectives of the researcher. Imote2 is developing a new generation of wireless sensor network hardware platform, but Imote2 hardware platform can only achieve maximum communication distance of 200m-300m, led to its use is limited in scope. Therefore, we need to design a power amplifier to the RF transmit signal power increase Imote2 nodes in order to increase the communication distance. RF transmitter power amplifier is the last stage, it has been modulated to the desired frequency band signal amplification power to ensure that the receiver within the coverage area can receive a satisfactory signal level, but not too much interference with adjacent channels of communication while also try to maintain high-power amplified signal is not distorted distortion. Requirements of these different aspects of power amplifier designers to make the exhaustive account of the many indicators of the balance of power amplifier design for wireless communication system design one of the key steps in the process.