The Application of Beamforming Technology in Ionospheric Oblique Incidence Sounding With Wuhan Multi-Channel Ionospheric Sounding System (WMISS)

Zhang, Wuyong; Liu, Tongxin; Yang, Guobin; Jiang, Chunhua; Hu, Yaogai; Zhu, Xiaoli; Lan, Ting; Zhao, Zhengyu

doi:10.1109/lgrs.2021.3095910

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…The proposed antenna's gain and axial ratio on antenna parameter results at the resonant frequency of 2.3-2.4 GHz in Figure 6. With an effective bandwidth of 24%, in Figure 7, the antenna exhibits complete coverage at the frequency range with AR < 3 and a gain power level of 5.23 dB in the coverage field (Yuwono & Mujahidin, 2019;Zhang et al, 2022). The dual-feed configuration of a double C slot was developed to meet the requirements for impedance bandwidth, circular polarization features, 3 dB beamwidth with the dual feed technique, and antenna material with a low-cost profile.…”

Section: Results and Discussion C-slot Cp Antennamentioning

confidence: 99%

C-Slot Circular Polarized Antenna for Hybrid Energy Harvesting and Wireless Sensing

Mujahidin,

Hidayat,

Ardi Prabowo

et al. 2024

JST

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This paper presents a new hybrid energy harvesting on electromagnetic solar for wireless energy harvesting of ambient from sensors of low-power devices. The axial ratio (AR) requirements produce Left-Hand Circular Polarization (LHCP) and Right-Hand Circular Polarization (RHCP) and simultaneously produce a 90-degree phase difference during energy harvesting, adopting a new design in designing a dual-feed broadband circular polarized (CP) antenna. To get the frequency band 2.3–2.4 GHz, we propose a C-Slot antenna with a circular patch dual feed. To estimate the diversity of the phase and magnitude output of the feed configuration under AR value, we used a 50 Ohm feed network output of the characteristic analysis for a dual feed CP antenna. An Axial ratio frequency range of less than 3 dB is achieved using polarization analysis with different branch channel couplers. To produce a DC output voltage, a high-frequency rectifier circuit embedded with a thin-film solar cell on the antenna is then connected to two T-junction power divider rectifiers, resulting in a high-efficiency design. A complete system-level analysis will include multiple signal classification methods of powered ambient RF energy using a wireless energy harvesting array that proposes a compact structure and demonstrates optimal configuration. Reliable operation in typical indoor environments indicates a self-contained sensor Node. Therefore, it has significant implications for powering small electronics and wireless sensor applications independently of the IoT Network or real implementation telecommunications industry.

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Section: Results and Discussion C-slot Cp Antennamentioning

confidence: 99%

C-Slot Circular Polarized Antenna for Hybrid Energy Harvesting and Wireless Sensing

Mujahidin,

Hidayat,

Ardi Prabowo

et al. 2024

JST

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Geometric Modeling and Algorithmic Simulation in Multibeam Echosounder (MBES) Systems

Liu,

Duan,

Cheng

2024

2024 IEEE 2nd International Conference on Sensors, Electronics and Computer Engineering (ICSECE)

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A Novel Method for Improving Quality of Oblique Incidence Sounding Ionograms Based on Eigenspace-Based Beamforming Technology and Capon High-Resolution Range Profile

et al. 2022

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Ground-based oblique incidence sounding (OIS) is an important means to investigate the ionosphere. As the OIS ionogram is a visual representation of the OIS parameters, such as group distance and maximum usable frequency (MUF), it is of great significance for improving the quality and the range resolution. This will facilitate the automatic interpretation and inversion of OIS ionograms to obtain the fine structure and spatial–temporal evolutions of the ionosphere. In this paper, a novel OIS signal processing scheme is proposed based on the Eigenspace-based (ESB) beamforming technology and Capon high-resolution range profile (HRRP). First, by applying the ESB beamformer to a compact L-shaped antenna array, the energy of the OIS signals received by multiple antennas can be added, while the interference and noise will be suppressed. Subsequently, the Capon HRRP algorithm is used to improve the range resolution. This is achieved due to the slow variation in the characteristics of the ionosphere resulting in good short-term coherence of the narrowband signals. The experimental results show that the two-stage signal-processing method significantly improves the imaging quality of OIS ionograms. In particular, the structure inside the ionosphere and its temporal and spatial evolution can be observed more precisely after the range resolution of the OIS ionogram is improved; therefore, it has great application potential.

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The Application of Beamforming Technology in Ionospheric Oblique Incidence Sounding With Wuhan Multi-Channel Ionospheric Sounding System (WMISS)

Cited by 3 publications

References 11 publications

C-Slot Circular Polarized Antenna for Hybrid Energy Harvesting and Wireless Sensing

C-Slot Circular Polarized Antenna for Hybrid Energy Harvesting and Wireless Sensing

Geometric Modeling and Algorithmic Simulation in Multibeam Echosounder (MBES) Systems

A Novel Method for Improving Quality of Oblique Incidence Sounding Ionograms Based on Eigenspace-Based Beamforming Technology and Capon High-Resolution Range Profile

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