Codesign of a Schottky Diode's and Loop Antenna's Impedances for Dual-Band Wireless Power Transmission

He, Zhongqi; Lin, Hang; Liu, Changjun

doi:10.1109/lawp.2020.3019739

Cited by 10 publications

(6 citation statements)

References 18 publications

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“…Although the loop antenna has been employed for harvesting energy [17,18], it is usually very challenging to miniaturize its footprint as the circumference of a typical loop resonator is required to be in the multiple of its operating wavelength. Our proposed antenna is employed for designing a compact rectenna that can operate in the Wi-Fi range (2.40-2.48 GHz).…”

Section: Antenna Designmentioning

confidence: 99%

“…For microwave WPT, it involves a rectenna that has an antenna to receive the microwave power and a recti er to convert it to DC power. Different types of rectennas have been reported, including those made of dipole antenna [16], loop antenna [17], patch antenna [11], and fractal antenna [18]. Unfortunately, most of the reported rectennas, such as the one with an off-center fed dipole antenna (total length = 100 mm) [16], a dual-band rectangular loop antenna (total size = 60 × 33 mm) [17], and a microstrip patch antenna (total size = 70 × 70 mm) [11], have a large footprint.…”

Section: Introductionmentioning

confidence: 99%

“…Different types of rectennas have been reported, including those made of dipole antenna [16], loop antenna [17], patch antenna [11], and fractal antenna [18]. Unfortunately, most of the reported rectennas, such as the one with an off-center fed dipole antenna (total length = 100 mm) [16], a dual-band rectangular loop antenna (total size = 60 × 33 mm) [17], and a microstrip patch antenna (total size = 70 × 70 mm) [11], have a large footprint. In practice, to achieve better user experience, the wearable antennas are required to be compact, low pro le, and lightweight [19].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Compact Conformal Tattoo-Polymer Antenna for On-Body Wireless Power Transfer

Liang

Chee

Lim

2023

Preprint

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A tattoo-polymer loop antenna is proposed for designing a wearable rectenna that can be used for on-body wireless power transfer. The proposed antenna can be easily printed on a piece of flexible tattoo paper and transformed onto a PDMS substrate, making the entire antenna structure conformal to human body. Here, a layer of frequency selective surface (FSS) is inserted in between the antenna and human tissue for improving the radiation performance. The FSS layer has successfully reduced the loading effects of the tissue, and it can improve the antenna gain as much as 13.8 dB. Also, the operating frequency of the rectenna is not affected much by deformation. To maximize the RF-DC conversion efficiency, a matching loop, a matching stub, and two coupled lines are integrated with the antenna for tuning the rectenna so that a wide bandwidth (~ 24%) can be achieved. The proposed rectenna design is simple as it does not require the use of any matching networks. Measurement results show that the proposed rectenna can achieve a maximum conversion efficiency of 59.0% with an input power of 5.75 µW/cm2. The efficiency can even exceed 40% for a low input power of 1.0 µW/cm2 with a 20 kΩ resistive load.

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Section: Antenna Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Compact Conformal Tattoo-Polymer Antenna for On-Body Wireless Power Transfer

Liang

Chee

Lim

2023

Preprint

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“…The LAn and CAn The circuit design's optimization did not have a capacitor charging pump with isolation of the ground on the rectenna on one side of the antenna branch because the DC voltage does not propagate through the antenna. However, this configuration is ineffective if utilized on an antenna connected directly to the ground, such as occurs with antenna Loops [22][23][24]. Thus, the source of electromagnetic energy at an angular frequency is the power input of the rectenna.…”

Section: × 4 Direction-finding Hybrid Coupler and Hybrid Electromagnetic Solar Circuitmentioning

confidence: 99%

CP Antenna with 2 × 4 Hybrid Coupler for Wireless Sensing and Hybrid RF Solar Energy Harvesting

Mujahidin

Kitagawa

2021

Sensors

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The main challenge faced by RF energy harvesting systems is to supply relatively small electrical power to wireless sensor devices using microwaves. The solution is to implement a new device in a circularly polarized rectenna with circular polarization sensitivity integrated with a thin-film solar cell. Its dual-feed antennas are connected to a 2 × 4 asymmetric hybrid coupler and a multi-stage voltage doubler rectifier circuit. This configuration has a 2 × 4 asymmetric hybrid coupler used to produce 4 outputs with a 90-degree waveform phase difference. The two ports can independently be connected to the wireless sensor circuit: radiofrequency harvesting of hybrid energy solar and information equipment can be carried out with these two antennas. The Dual-Feed circular patch antenna has a two-port bandwidth of 137 MHz below −15 dB and an axial ratio of less than 3 dB, with a center frequency of 2.4 GHz with directional radiation and a high gain of 8.23 dB. It can be sensitive to arbitrary polarization of the input voltage multiplier waveform to overcome uncertainty in empirical communication environments. A parallel structure is arranged with a thin film solar cell integration from the transmitter with an output voltage of 1.3297 V with a compact composition and RF energy. The importance of adopting a wireless sensor strategy with circular polarization sensitivity and integrated RF solar energy harvesting rather than a single source method makes this research a significant novelty by optimizing the analysis of multiple wireless sensor signal access.

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“…16. The parallel circuit has the advantage of increasing the voltage up to 80% compared with a single [20] configuration. In addition, integration with solar cells can also increase the power up to 25 times if only relying on electromagnetic sources [21].…”

Section: B Performance Electromagnetic-solar With Parallel Cpw Antenna Circuit Integratedmentioning

confidence: 99%

The Novel CPW 2.4 GHz Antenna with Parallel Hybrid Electromagnetic Solar for IoT Energy Harvesting and Wireless Sensors

Mujahidin¹,

Kitagawa²

2021

IJACSA

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The design and implementation's novelty simultaneously utilizes the antenna's frequency, polarization, and feed structure to maximize the harvested RF energy and become a microstrip communication circuit for wireless sensor or communication systems in IoT devices. In addition, the optimization of the parallel circuit configuration has a voltage doubler model with an integrated parallel system and thin-film solar cells. Implementation of the antenna structure has two-line feeds in one antenna. Usage both feeds have the same function as CPW circular polarization. Another advantage is that there is no miss-configuration when installing the port exchanges when using both output ports simultaneously. The 2-port antenna has an area of 1/2 per port (where accessible wavelengths work well at the 2.4 GHz frequency). It has been shown to achieve a relatively narrow bandwidth of 86.5 percent covering WiFi frequency band networks and IoT communications. It does not require additional filters and analog matching circuits that cause power loss in the transmission process in parallel voltage doubler circuits. Integrating a reflector on the CPW antenna with two ports for placement of thin-film solar cells provides antenna gain of up to 8.2 dB. It provides a wide beam range with directional radiation. Using a multi-stage parallel to increase voltage output and integrated with a thin-film solar cell converter proves efficient in the 2.4 GHz frequency band. When the transmission power density is -16.15 dBm with a tolerance of 0.023, the novel energy harvester configuration circuit can produce an output voltage of 54 mV dc without adding solar cell energy. And Integrated thin-film solar cell a light beam of 300 lux in the radiation beam area of -16.15 dBm, the energy obtained has a value of 1,74467V. It also shows that the implementation of this configuration can produce an optimal dc output voltage in the actual indoor and outdoor ambient settings. The optimization of antenna implementation and the communication process with Multiple signal classifications improves the configuration of antennas that are close to each other and have identical phase outputs. It is instrumental and efficient when applied to IoT devices.

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Codesign of a Schottky Diode's and Loop Antenna's Impedances for Dual-Band Wireless Power Transmission

Cited by 10 publications

References 18 publications

Compact Conformal Tattoo-Polymer Antenna for On-Body Wireless Power Transfer

Compact Conformal Tattoo-Polymer Antenna for On-Body Wireless Power Transfer

CP Antenna with 2 × 4 Hybrid Coupler for Wireless Sensing and Hybrid RF Solar Energy Harvesting

The Novel CPW 2.4 GHz Antenna with Parallel Hybrid Electromagnetic Solar for IoT Energy Harvesting and Wireless Sensors

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