A design of adaptive control and communication protocol for swipt system in 180 nm cmos process for sensor applications

Muhammad Riaz Ur Rehman, Imran Ali, Danial Khan, Muhammad Asif, Pervesh Kumar, Seong Jin Oh, Young Gun Pu, Sang Sun Yoo, Keum Cheol Hwang, Youngoo Yang, Dong In Kim, Kang Yoon Lee

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

This paper presents an adaptive control and communication protocol (ACCP) for the ul-tra-low power simultaneous wireless information and power transfer (SWIPT) system for sensor applications. The SWIPT system-related operations depend on harvested radio frequency (RF) energy from the ambient environment. The necessary power for SWIPT system operation is not always available and it depends on the available RF energy in the ambient environment, transmitted RF power from the SWIPT transmitter, and the distance from the transmitter and channel conditions. Thus, an efficient control and communication protocol is required which can control the SWIPT system for sensor applications which mainly consists of a transmitter and a receiver. Multiple data frame structures are used to optimize the exchange of bits for the communication and control of the SWIPT system. Both SWIPT transmitter and receiver are capable of using multiple modulation schemes which can be switched depending on the channel condition and the available RF energy in the ambient environment. This provides support for automatic switching between the time switching scheme and power splitting scheme for the distribution of received RF power in the SWIPT receiver. It also adjusts the digital clock frequency at the SWIPT receiver according to the harvested power level to optimize the power consumption. The SWIPT receiver controller with ACCP is im-plemented in 180 nm CMOS technology. The RF frequency of the SWIPT operation is 5.8 GHz. Digital clock frequency at the SWIPT receiver can be adjusted between 32 kHz and 2 MHz which provides data rates from 8 to 500 kbps, respectively. The power consumption and area utilization are 12.3 µW and 0.81 mm².
Original languageEnglish (US)
Pages (from-to)1-23
Number of pages23
JournalSensors (Switzerland)
Volume21
Issue number3
DOIs
StatePublished - Feb 1 2021
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Analytical Chemistry
  • Electrical and Electronic Engineering

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