Design Improvements in Power Amplifier for Making Energy Efficient Transceiver Blocks of Sensor Nodes
Saji. M. Antony1, S. Indu2, Rajeshwari Pandey3

1Saji. M. Antony, Research Scholar, ECE Department, Delhi Technological University, New Delhi. Assistant Professor, ECE Department, Bharati Vidyapeeth’s College of Engineering, New Delhi India.
2Dr. S. Indu, Professor, ECE Department, Delhi Technological University, New Delhi India.
3Dr. Rajeshwari Pandey, Professor, ECE Department, Delhi Technological University, New Delhi India.

Manuscript received on 01 May 2019 | Revised Manuscript received on 15 May 2019 | Manuscript published on 30 May 2019 | PP: 65-70 | Volume-8 Issue-7, May 2019 | Retrieval Number: F3604048619/19©BEIESP
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Abstract: A wireless sensor network is an accumulation of sensor nodes in large quantities with limited energy resources. Thus, use of energy efficient power amplifiers is an essential requirement for sensor nodes as power amplifiers are responsible for the main power consumption in the transceivers of sensor nodes. The transceivers should operate at high data rate for better efficiency which allows many nodes to share same channel through time division multiplexing. Thus, wider band width is another important requirement for power amplifiers used in sensor transceivers. Reliability of a power amplifier can be increased by designing at smaller supply voltage. This paper suggests improvements in design of power amplifier in class E configuration, for transceivers in wireless sensor nodes. In order to achieve wider band width, cascade of common drain followed by common source in class E configuration has been designed; and for more reliable operation with higher efficiency, class E in double cascoded has been implemented. The proposed designs are simulated in SPICE and higher efficiencies and band widths are achieved.
Keyword: Class E power amplifier, Double cascoding; Low power transceivers, Power MOSFET, Switch mode power amplifier.
Scope of the Article: Digital System and Logic Design.