Research on the multiple subarray-pairs interferometric algorithm used in high resolution multibeam bathymetric system by ZHOU Tian1, LI Shan1, LI Hai-sen1, LIU Xiao1

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Research on the multiple subarray-pairs interferometric algorithm used in high resolution multibeam bathymetric system by ZHOU Tian1, LI Shan1, LI Hai-sen1, LIU Xiao1

Subjects: “…multibeam bathymetric system;interferometric;phase ambiguity;multiple subarray-pairs…”
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Irregular Polyomino-Shaped Subarrays for Space-Based Active Arrays by R. J. Mailloux, S. G. Santarelli, T. M. Roberts, D. Luu

“…It is shown that using irregular polyomino subarrays can result in a major decrease in sidelobes while presenting, in most cases, only a few tenths of a dB gain reduction compared to rectangular subarrays.…”
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First Radio Astronomy Examination of the Low-Frequency Broadband Active Antenna Subarray by A. A. Stanislavsky, I. N. Bubnov, A. A. Konovalenko, A. A. Gridin, V. V. Shevchenko, L. A. Stanislavsky, D. V. Mukha, A. A. Koval

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A Low-Profile Dual-Polarized High-Gain Low Cross-Polarization Phased Array for Ku-Band Satellite Communications by Yuhan Huang, Jie Zhang, Xiuping Li, Zihang Qi, Fan Lu, Hua Jiang, Xin Xue, Hua Zhu, Xiaobin Guo

“…The measured impedance bandwidths of the proposed phased array antennas are around 21.1%, while the in-band isolations are above 36.7 dB. Gains up to 29 dBi and 32.4 dBi are performed by two prototypes separately. …”
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Investigation of a Radiation Pattern Frequency Dependence of a Subarrayed Slotted Waveguide Antenna Using CAD Ansys HFSS by V. G. Koshkid’ko, M. M. Migalin

“…In this regard, the distortion of the radiation pattern is becoming an urgent task.Aim. The main objective of this work is to preserve the radiation pattern of the resonant slotted waveguide antenna with longitudinal slots in the broad face in operating bandwidth.Materials and methods. …”
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Hybrid precoding based on distributed partially-connected structure for multiuser massive MIMO by Lei ZHANG, Qin WANG

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Simultaneous Multibeam Clustered Phased Arrays Analysis Using Mixed and Multiple Antenna Element Factors by Francesco Alessio Dicandia, Simone Genovesi

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A High-Gain Series-Parallel Millimeter-Wave SIW Cavity-Backed Patch Array by Wenlei Wang, Huayan Jin, Lekai Zhou, Kuo-Sheng Chin, Guo Qing Luo

“…The fabricated array prototype realized a −10 dB impedance bandwidth of 14.7% in the 24–27.8 GHz frequency band, with a peak gain of 22.05 dBi. Overall, based on its advantages—wide band, high gain, low cost, and compact feeding network—the proposed array can be considered a potential candidate for use in mmW wireless applications.…”
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A Flexible Phased-MIMO Array Antenna with Transmit Beamforming by Wen-Qin Wang, Huaizong Shao

“…The subarrays jointly offer flexible operating modes such as MIMO array which offers spatial diversity gain, phased-array which offers coherent directional gain and frequency diverse array which provides range-dependent beampattern. …”
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Antenna Array Based on Fabry–Perot Cavity with Mechanoelectrical Beam Steering by Y. A. Litinskaya, S. V. Polenga, Y. P. Salomatov

“…This article investigates the directional characteristics of a subarray based on a Fabry–Perot cavity and an antenna array with mechanoelectrical beam steering.Aim. …”
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Instantaneous Bandwidth Enhancement for Variable Inclination Continuous Transverse Stub Antenna by Zheng Liu, Jian Zhang, Xue Lei, Tianpeng Li, Jun Gao, Zhijian Xu

“…To demonstrate this method, a proposed VICTS antenna composed of 2 × 2 subarrays was designed and simulated. Compared with the traditional VICTS antenna of the same aperture size, the gain loss was reduced by at least 52% and the 3/4-dB gain-loss bandwidth increased from 2.5% to 4.2%. …”
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A Tutorial on Wideband XL-MIMO: Challenges, Opportunities, and Future Trends by Mohammad Parvini, Bitan Banerjee, Muhammad Qurratulain Khan, Torge Mewes, Ahmad Nimr, Gerhard Fettweis

“…Motivated by the challenges of maintaining consistent beamforming across frequency, we categorize existing solutions into two main classes: subband division-based methods, which are based on filtering the wideband signal to narrowband signals and applying a subband-dependent set of phase shifts to each subband to reduce the beam squint, and subarray division-based techniques, which involve partitioning the entire array into smaller subarrays or utilizing a subarray of true-time-delays (TTDs). …”
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A Two-Dimensional DOA Estimation Method Based on Virtual Extension of Sparse Array by Guibao Wang, Peiyao Zhao, Lanmei Wang, Xiangyu Wang, Huan Wang, Zhongpeng Zhang

“…The interelement spacing of a coprime array breaks through the half-wavelength limitation, so that a larger array aperture can be obtained with a fixed number of array elements. …”
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Design of an S-Band Phased Array with Modified Dipoles by Meng Xiang, Yu Xiao, Bin Xi, Yue Zhang, Shiyou Xu

“…The measured scanning loss in the H-plane is 2.7 dB when scanning up to 60° with active voltage standing wave ratio (VSWR) <3, and the gain can achieve 21 dB at 3 GHz with a cross-polarization level below −30 dB at all angles.…”
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High isolation 16-port massive MIMO antenna based negative index metamaterial for 5G mm-wave applications by Alya Ali Musaed, Samir Salem Al-Bawri, Wazie M. Abdulkawi, Khaled Aljaloud, Zubaida Yusoff, Mohammad Tariqul Islam

“…Abstract A 16-port massive Multiple-Input-Multiple-Output (mMIMO) antenna system featuring a high gain and efficiency is proposed for millimeter-wave applications. …”
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A 60-GHz Wideband High-Efficiency Circularly Polarized Dual-Coil Antenna Array by Jun Xiao, Qi Gan, Zihang Ye, Chong-Zhi Han, Tongyu Ding, Qiubo Ye

“…The proposed CP dual-coil antenna is composed of a resonant substrate-integrated cavity (SIC) and a pair of centrally symmetrical coils, which are fed differentially by a substrate-integrated waveguide (SIW) coupling slot. …”
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Application of Aperiodic &#x201C;Einstein&#x201D; Monotile in Phased Arrays With Limited Beam Scanning Range by Yunfei Qiang, Xiaochuan Fang, Rui-Xin Wu, Qian Chen, Wei Wang

“…Example B features a subarray comprising eight antenna elements based on the Hat polykite. …”
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Deep-Learning-Based High-Precision Localization With Massive MIMO by Guoda Tian, Ilayda Yaman, Michiel Sandra, Xuesong Cai, Liang Liu, Fredrik Tufvesson

“…In this way, ensemble learning can be utilized to fuse all chains to improve localization performance. …”
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Dual-band reconfigurable circularly polarized antenna with novel phase shifter and beamforming network by Majid Allahverdizadeh, Reza Masoumi, Mohammad Bemani

“…The proposed antenna exhibits high performance in terms of gain and polarization purity across two distinct frequency bands: 2.4 GHz and 5.2 GHz. …”
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