A Wideband, Quasi-Isotropic, Ambient RF Energy Harvester Combining UHF-TV and FM

Jung, Eui Min; Lee, Wang‐Sang; Vyas, Rushi; Tentzeris, Manos M.

doi:10.1109/lawp.2021.3095102

Cited by 8 publications

(10 citation statements)

References 26 publications

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“…A compact circularly polarized beam-switching system is designed for efficient wireless power transfer at 2.4 GHz [5]. Achieving optimal power transfer from antenna to rectifier requires careful impedance matching techniques for single-band [6][7][8][9][10][11][12][13][14][15][16][17][18][19], broadband [20][21][22][23][24][25], dual-band [28][29][30], and multiband [31][32][33][34] rectifiers. The input impedance of RF-DC rectifiers changes nonlinearly with input power due to rectification components, necessitating meticulous design for effective impedance matching across a wide power range [20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

“…Achieving optimal power transfer from antenna to rectifier requires careful impedance matching techniques for single-band [6][7][8][9][10][11][12][13][14][15][16][17][18][19], broadband [20][21][22][23][24][25], dual-band [28][29][30], and multiband [31][32][33][34] rectifiers. The input impedance of RF-DC rectifiers changes nonlinearly with input power due to rectification components, necessitating meticulous design for effective impedance matching across a wide power range [20][21][22][23][24][25]. Rectifier circuits using single diodes or voltage-doubler configurations have been explored [6][7][8][9][10][11][12][13][14][15][16][17][18][19][...…”

Section: Introductionmentioning

confidence: 99%

“…The input impedance of RF-DC rectifiers changes nonlinearly with input power due to rectification components, necessitating meticulous design for effective impedance matching across a wide power range [20][21][22][23][24][25]. Rectifier circuits using single diodes or voltage-doubler configurations have been explored [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][29][30][31] for efficient PCE. A remarkable innovation, RAMSES [6], is an intelligent module for environmental sensing, computation, and data transfer.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Design of Broadband Circularly Polarized Rectenna With Enhanced Gain for Energy Harvesting

Kumar Bairappaka,

Ghosh,

Kaiwartya

et al. 2024

IEEE Access

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Device-to-device communication in the Internet of Things (IoT) enables seamless data exchange, aiding automation, monitoring, and control. Yet, sustainability challenges arise due to energylimited devices. This paper presents a novel method for Indoor IoT sensors to function without batteries. A broadband rectenna on low-cost FR4 substrate is proposed, mitigating battery constraints. It integrates a circularly polarized (CP) antenna with an Artificial Magnetic Conductor (AMC) and a RF-to-DC rectifier. A coplanar waveguide fed CP (CPW-CP) antenna achieves a broad axial ratio bandwidth (ARBW) of 19.6% (AR < 3 dB) spanning from 2.3 GHz to 2.8 GHz, boosting gain from 0.5-0.8 dBic to 5-6.5 dBic within the ARBW, courtesy of the AMC integration. A stable RF-DC rectifier, using a modified wideband resistance compression network (WRCN), attains a power conversion efficiency (PCE) exceeding 30% for input powers ranging from -10 dBm to 12 dBm, peaking at 65% for 7 dBm input power for a 2 kΩ load. PCE variation within ARBW is only 5-8%. The RF-DC rectifier is integrated with the enhanced gain CPW-CP antenna to form a rectenna which is fabricated and measured. The experimental results comply with the simulated results, and the experimental validation demonstrates the rectenna's effectiveness in charging a 0.1 pF capacitor within 2 ms in an indoor environment equipped with a Wi-Fi router. This innovative design marks a promising step towards addressing energy constraints in IoT devices, facilitating their long-term operation and deployment in diverse settings. INDEX TERMSCircularly polarized (CP) antenna, Artificial magnetic conductor (AMC), RF-DC rectifier, Power conversion efficiency (PCE), Wideband Resistance compression network (WRCN), RF energy harvesting.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Novel Design of Broadband Circularly Polarized Rectenna With Enhanced Gain for Energy Harvesting

Kumar Bairappaka,

Ghosh,

Kaiwartya

et al. 2024

IEEE Access

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“…At a frequency of 2,450 MHz, the distance from the transmission tower (about 0.35 m) can convert the energy to 0.303 V, with an efficiency of approximately 16% [26]. The double bow-tie dipole antenna with a front and back side used in the frequency range UHF-TV, connected to the rectifier circuit, can convert energy up to 231 µW, and the frequency range of 91.1 MHz in the FM system can convert energy up to 885 µW [27].…”

Section: Introductionmentioning

confidence: 99%

“…According to the research mentioned, it has the advantage of increasing the efficiency of the gain in energy harvesting, but there are also disadvantages in terms of gain optimization and much complexity with more adjusting points. As a result, the researchers choose disadvantages identified by this research that is the first part of a basic dipole antenna structure [27,28] with an increasing I-shaped stub to widen the frequency [16,[29][30][31][32] and gain enhancement for the antenna by using the horn waveguide [33][34][35] and in terms of getting more energy. The second part studies the matching impedance circuit using a Radial Stub Circuit (RSC) [20,36,37] with the power frequency signal converter circuit by using a full-wave rectifier circuit with a voltage multiplier circuit [16,38,39] to increase the pressure on the rectenna system that is designed to receive power at a frequency of 510-790 MHz, which is the digital TV wireless transmission system.…”

Section: Introductionmentioning

confidence: 99%

Dipole Antenna With Horn Waveguide for Energy Harvesting in DTV Systems

Naktong¹,

Wattikornsirikul²

2022

PIER M

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This article presents a dipole antenna using an I-shape adding technique on both sides of the antenna's body to widen the frequency range, using a horn waveguide to gain enhancement and harvest energy by matching the circuit which is compatible with the voltage multiplier circuit at the RF frequency (510-790 MHz) in a TV digital system. Having measured the effect of the antenna, it was found that the antenna operates at a frequency range of 60.24% (450-838 MHz), a 67.79% increase from the base dipole antenna, which has again enhancement of 10.23 dB from adding the horn waveguide (60.99%). It has a pattern of energy radiating in a specific direction, and when the antenna is used with an energy harvesting circuit to get energy or power from the front direction of the TV digital antenna at a distance of 10 km, it is capable of harvesting energy of up to 7.33 µW.

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RF energy harvesters for wireless sensors, state of the art, future prospects and challenges: a review

Khan,

Farina

et al. 2024

Phys Eng Sci Med

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The power consumption of portable gadgets, implantable medical devices (IMDs) and wireless sensor nodes (WSNs) has reduced significantly with the ongoing progression in low-power electronics and the swift advancement in nano and microfabrication. Energy harvesting techniques that extract and convert ambient energy into electrical power have been favored to operate such low-power devices as an alternative to batteries. Due to the expanded availability of radio frequency (RF) energy residue in the surroundings, radio frequency energy harvesters (RFEHs) for low-power devices have garnered notable attention in recent times. This work establishes a review study of RFEHs developed for the utilization of low-power devices. From the modest single band to the complex multiband circuitry, the work reviews state of the art of required circuitry for RFEH that contains a receiving antenna, impedance matching circuit, and an AC-DC rectifier. Furthermore, the advantages and disadvantages associated with various circuit architectures are comprehensively discussed. Moreover, the reported receiving antenna, impedance matching circuit, and an AC-DC rectifier are also compared to draw conclusions towards their implementations in RFEHs for sensors and biomedical devices applications.

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A Wideband, Quasi-Isotropic, Ambient RF Energy Harvester Combining UHF-TV and FM

Cited by 8 publications

References 26 publications

A Novel Design of Broadband Circularly Polarized Rectenna With Enhanced Gain for Energy Harvesting

A Novel Design of Broadband Circularly Polarized Rectenna With Enhanced Gain for Energy Harvesting

Dipole Antenna With Horn Waveguide for Energy Harvesting in DTV Systems

RF energy harvesters for wireless sensors, state of the art, future prospects and challenges: a review

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