Far Field Analysis of Defected Ground Structured Wideband Antenna for RF Energy Harvesting Applications

Pandey, Rashmi; Shankhwar, Ashok Kumar; Singh, Ashutosh Kumar

doi:10.1007/978-981-15-6840-4_16

Cited by 1 publication

(1 citation statement)

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“…In this work, a simple structure of the microstrip patch antenna with an octagonal patch of three rectangle notches is introduced. The proposed antenna [28] is considered to fabricate on a cost-efficient FR4 substrate, where the relative permittivity ( r ) is 4.4, loss tangent of the substrate 0.02, and thickness (h) of the substrate 1.6 mm. The total size of the antenna substrate is (W × L) 40× 45 mm 2 , which is 0.26λ 0 × 0.29λ 0 at 1.975 GHz, 0.32λ 0 × 0.36λ 0 at 2.4 GHz, 0.42λ 0 × 0.48λ 0 at 3.2 GHz, 0.56λ 0 × 0.63λ 0 at 4.2 GHz.…”

Section: Defected Ground Structured Rectenna Configurationmentioning

confidence: 99%

An Improved Conversion Efficiency of 1.975 to 4.744 GHZ Rectenna for Wireless Sensor Applications

Pandey¹,

Shankhwar²,

Singh³

2021

PIER C

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This article discusses the design analysis of a wideband rectenna (Antenna + Rectifier). It empowers low power devices, battery-less power sensors, and many Internet of Things (IoT) devices. The main focus of this work is divided into two parts. First, to develop the power to operate the wideband frequency of operation without system complexity. To obtain rectifier bandwidth sufficiently, L-section impedance matching with dual Schottky diode HSMS270B is proposed. Second, to improve the rectenna efficiency and output DC power. Wideband rectenna harvests the maximum RF power of 30.590 dBm, 1145.51 mW, 10.703 Volts at 3.2 GHz. The harvested power is easily available to power up the low powered sensor such as gas sensor (500-800 mW), pressure sensor (10-15 mW), and temperature sensor (0.5-5 mW). The peak conversion efficiency of the rectenna is 88.58% at 0 dBm, 34.70% at 10 dBm, and 53.52% at 20 dBm under the load resistance of 100 kΩ. The proposed work shows a 20-25% improvement in conversion efficiency with this approach. For efficient RF energy harvesting applications, the proposed rectenna is capable of covering a wideband application from 1.975 to 4.744 GHz with a single radiation patch. This shows that the novel approach of the considered work and the proposed rectenna has the specialty to capture more energy from a wide area at once.

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Section: Defected Ground Structured Rectenna Configurationmentioning

confidence: 99%