Singh, N.Kumar, S.Kumar Kanaujia, B.K.Beg, M.T.Mainuddin, M.Kumar, S.2026-02-052020Microsystem Technologies, 2020, 26, 6, pp. 1881-18889467076https://doi.org/10.1007/s00542-019-04737-0https://idr.nitk.ac.in/handle/123456789/23887In this paper, a compact GFET-based rectifier integrated with a monopole antenna is proposed for wireless energy harvesting applications. The GFET increases impedance bandwidth of the rectifying circuit, thus covering a range of 22.5–27.5 GHz. The sensing antenna is a triangular monopole with truncated corners for realizing circular polarization at the frequencies 24.25 GHz and 27 GHz. By the help of ?/4 transformer, the sensing antenna is matched with the proposed GFET rectifier. The RF-DC conversion efficiency realized is 80% at 5 dBm for the load of 5 K?, and the output DC voltage observed is 6.8 V. The modified ground plane triangular monopole antenna shows a peak gain of 7.8 dBi. The designed rectenna prototype is fabricated and found simulated and measured results are in good agreement. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.Electric impedanceElectric rectifiersEnergy harvestingMicrowave antennasMonopole antennasRectifying circuitsSlot antennasImpedance bandwidthsMeasured resultsModified ground planeOutput DC voltagePeak gainRF energy harvestingTriangular monopolesWireless energyRectennas