Optimal Power Splitting of Wireless Information and Power Transmission using a Novel Dual-Channel Rectenna

Ping Lu, Ka Ma Huang, Chaoyun Song, Yuan Ding, George Goussetis

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)
63 Downloads (Pure)


Traditionally, the signal power is divided equally between dual functions in Wireless Information and Power Transmission (WIPT), which, intuitively, is not an optimal solution since the power sensitivities for communication and charging node pose different constraints for signals. To address this challenge, a two-channel rectenna with an asymmetrical coupler feeding network (ACFN) has been proposed for WIPT under the power and time sharing (PS and TS) schemes. The proposed two-port rectenna consists of a receiving antenna integrated with ACFN where one output port is connected to a rectifying circuit while the other is used for information recovery. Different from the conventional PS scheme with equal division, the proposed rectenna can adjust ratios of power at two outputs. That is, routing high power to the RF-DC port, and transferring low power but of sufficient signal-noise-ratio (SNR) to the port being used for signal demodulation/decoding. As a result, the simulated/ measured maximum RF-DC conversion efficiency of the rectenna can reach up to 73.9%/70.4% for Quadrature Phase Shift Keying (QPSK) modulated signals and 63.9%/60.7% for continuous wave (CW) signals. In addition, good isolation between the two output ports ensures low interference against information decoding.
Original languageEnglish
Pages (from-to)1846-1856
Number of pages11
JournalIEEE Transactions on Antennas and Propagation
Issue number3
Early online date15 Oct 2021
Publication statusPublished - Mar 2022


  • Asymmetrical coupler
  • Couplers
  • Receiving antennas
  • Rectennas
  • Rectifying circuits
  • Scattering parameters
  • Wireless Information and Power Transmission (WIPT)
  • Wireless communication
  • Wireless sensor networks
  • power splitting scheme
  • time sharing scheme
  • two-channel rectenna

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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