A high-precision terahertz retrodirective antenna array with navigation signal at a different frequency

Zhu, Zhongbo; Hu, Weidong; Qin, Tao; Sheng, Li; Li, Xiaojun; Zeng, Jiangjie; Lin, Xianqi; Ligthart, L.P.

doi:10.1631/fitee.1900581

Cited by 6 publications

(4 citation statements)

References 9 publications

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“…For instance, wireless communication around 100 GHz, which can offer the potential for massive data rates and broad bandwidth, has attracted considerable attention for beyond 5G and 6G communications [1,5]. The interest in modern mmWave and THz communication systems and spectrum detectors has enabled a great demand for abundant active and passive devices, such as oscillators [6], multipliers [7], mixers [8], on-chip amplifiers [9], antenna arrays [10] and filters [11]. Filters, as one of the key devices, can play an invaluable role in most systems, blocking unwanted or spurious waves [12].…”

Section: Introductionmentioning

confidence: 99%

A W-Band Chebyshev Waveguide Bandpass Filter with Wide Stopband Performance

Zhu,

Hu,

et al. 2024

Electronics

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In this paper, a W-band waveguide bandpass filter with a standard fourth-order Chebyshev response is proposed based on the computer numerical control (CNC)-milling technology. The harmonics-staggered technique and orthogonal coupling method are incorporated into this waveguide filter design without increasing the complexity of the filter structure in order to suppress the intrinsic spurious responses near the passband. Furthermore, the proposed filter design maintains a simple construction, which can be conveniently fabricated using CNC milling. The fabricated waveguide filter exhibits an average insertion loss of 0.9 dB and a return loss of above 20 dB in a 3 dB fractional bandwidth (FBW) of 5.5% centered at 85 GHz. The excellent spurious suppression property can reach better than −25 dB up to 165 GHz. The wide stopband performance of the proposed W-band filter is very competitive compared with the reported waveguide filters.

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Section: Introductionmentioning

confidence: 99%

A W-Band Chebyshev Waveguide Bandpass Filter with Wide Stopband Performance

Zhu,

Hu,

et al. 2024

Electronics

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“…Modern wireless communication systems have adopted frequency duplex (FD) and polarization duplex (PD) as solutions for simultaneous transmission and reception to meet the growing demand for higher transmission data rates [1][2][3][4]. These techniques are used in numerous applications, including satellite communication [5,6], mobile networks [7,8], vehicular communication [9], and radio-frequency identification (RFID) systems [10,11], resulting in an increase in channel capacity and a decrease in data collision rates.…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Frequency Selective Surface with Different Polarization Selectivity for Wireless Communication Application

Qin

Huang

Cai

et al. 2023

Sensors

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This article proposes a dual-band, frequency- and polarization-selective surface. Multiple resonant modes are introduced using the U-shaped resonator with a ground via to achieve dual-band responses and polarization selectivity. Two symmetrically grounded U-shaped resonators are coupled through electrically coupled apertures in a common ground, resulting in a passband with two transmission zeros per polarization. A general design flowchart and additional examples at the S, X, and K-bands are presented as well. A prototype at X-band is analyzed, fabricated, and measured, showing the passband center frequencies of 9.68 GHz and 10.73 GHz, factional bandwidths of 3.45% and 3.48%, and insertion losses of 0.9 dB and 1.1 dB, respectively. Due to the high selectivity, small frequency ratio, low profile, and stable performance under oblique incidence, the proposed designs have application potential in wireless communication systems.

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“…For location ambiguous or moving targets, phased array antennas [10,11,12] are more advantageous because adjusting the phase of the feeding source of the transmitting antenna unit can realize energy focusing. Furthermore, based on retrodirective technology [13,14,15,16], the phase information can be obtained by receiving and processing the pilot signal from the energy receiver, eliminating the need to know the absolute coordinate position of the energy receiver in advance. To achieve this, pilot signal receiving antennas and subsequent hardware and software systems are set up at the transmitting antenna.…”

Section: Introductionmentioning

confidence: 99%

Energy receiver positioning using a spatial search strategy in MWPT

Dong-ping

Tian

Liu

et al. 2023

IEICE Electron. Express

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This paper proposes a space search method combining the Гtype layout of receiving antenna array of pilot signal for energy receiver positioning in MWPT systems. Based on the retrodirective technology, the spatial coordinate identification function (SCIF) of the energy receiver is generated. The study also investigates how to determine the spatial search range and search point interval. In addition, we propose a Criss-cross space search strategy (CSSS) to accelerate target positioning by summarizing the distribution features of the results obtained by SCIF. The simulation and physical experiment results demonstrate that the proposed method effectively overcomes the phase ambiguity problem and greatly improves the speed and accuracy of energy receiver positioning.

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A high-precision terahertz retrodirective antenna array with navigation signal at a different frequency

Cited by 6 publications

References 9 publications

A W-Band Chebyshev Waveguide Bandpass Filter with Wide Stopband Performance

A W-Band Chebyshev Waveguide Bandpass Filter with Wide Stopband Performance

Dual-Band Frequency Selective Surface with Different Polarization Selectivity for Wireless Communication Application

Energy receiver positioning using a spatial search strategy in MWPT

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