Linear-Polarization-Insensitive Rectenna Design for Ground-to-Air Microwave Power Transmission

Zhang, Hao; Ngo, Tung

doi:10.1109/access.2020.2998182

Cited by 10 publications

(4 citation statements)

References 18 publications

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“…The alignment of the radiation pattern and polarization during transmission depends on the antenna orientation, as illustrated in Figure 4 . By changing the position of

and

, mismatches occur and change the effective radiation zones where the signal arrives [ 33 , 34 ]. Misalignments that decrease

strength can be mitigated by varying the orientation of the antennas and analyzing changes in the spectrogram of the received signal.…”

Section: Signal Modelmentioning

confidence: 99%

Influence of the Antenna Orientation on WiFi-Based Fall Detection Systems

Cardenas

Gutiérrez

Aguilar-Ponce

2021

Sensors

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The growing elderly population living independently demands remote systems for health monitoring. Falls are considered recurring fatal events and therefore have become a global health problem. Fall detection systems based on WiFi radio frequency signals still have limitations due to the difficulty of differentiating the features of a fall from other similar activities. Additionally, the antenna orientation has not been taking into account as an influencing factor of classification performance. Therefore, we present in this paper an analysis of the classification performance in relation to the antenna orientation and the effects related to polarization and radiation pattern. Furthermore, the implementation of a device-free fall detection platform to collect empirical data on falls is shown. The platform measures the Doppler spectrum of a probe signal to extract the Doppler signatures generated by human movement and whose features can be used to identify falling events. The system explores two antenna polarization: horizontal and vertical. The accuracy reached by horizontal polarization is 92% with a false negative rate of 8%. Vertical polarization achieved 50% accuracy and false negatives rate.

show abstract

“…The alignment of the radiation pattern and polarization during transmission depends on the antenna orientation, as illustrated in Figure 4 . By changing the position of

and

, mismatches occur and change the effective radiation zones where the signal arrives [ 33 , 34 ]. Misalignments that decrease

strength can be mitigated by varying the orientation of the antennas and analyzing changes in the spectrogram of the received signal.…”

Section: Signal Modelmentioning

confidence: 99%

Influence of the Antenna Orientation on WiFi-Based Fall Detection Systems

Cardenas

Gutiérrez

Aguilar-Ponce

2021

Sensors

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“…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]. In this case, the electromagnetic source is inferior, according to the source in the IoT device.…”

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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“…Current UAVs carry a relatively limited battery energy in order to reduce the weight, which greatly limits the flight time and distance. However, through wireless energy transmission, it is possible to charge the flying drones in real time, thus extending the flight time [6].…”

Section: Introductionmentioning

confidence: 99%

“…In the existing literature, some related studies have been conducted on improving the antenna radiation efficiency, to enhance the energy transmission efficiency. In [6], a linear-polarization-insensitive rectenna is proposed, which is suitable for ground-to-air wireless power transfer. The authors used a hybrid coupler to feed the dual-polarized aperture-coupled antenna, thus enabling the antenna to receive the horizontally polarized and vertically polarized components simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Dual-Polarized Dipole Antenna for Wireless Data and Microwave Power Transfer

Liao

Tang

et al. 2022

Electronics

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This manuscript presents a broadband high-efficiency dual-polarized dipole antenna for wireless power and data transfer. The proposed antenna mainly consists of cross-dipole patches, matching baluns, and a ground plane. The dual-polarized radiation mode was achieved by using two linear-polarization matching baluns to feed the cross-dipole patches orthogonally. The proposed dual-polarized dipole antenna realizes a bandwidth with S11 less than −10 dB (4.28 GHz–5.92 GHz) and a high radiation efficiency of about 95%. An independent rectifying circuit was designed, and a microwave energy transmission experiment was carried out. The final measured conversion efficiency for the two polarized ports at 5.8 GHz was about 77.6% and 76.4%, respectively. Simulation and measurement results showed that the proposed antenna is suitable for both wireless power and wireless data transfer applications.

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Linear-Polarization-Insensitive Rectenna Design for Ground-to-Air Microwave Power Transmission

Cited by 10 publications

References 18 publications

Influence of the Antenna Orientation on WiFi-Based Fall Detection Systems

Influence of the Antenna Orientation on WiFi-Based Fall Detection Systems

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

Dual-Polarized Dipole Antenna for Wireless Data and Microwave Power Transfer

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