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

“…Three slotted waveguide antennas’ models, consisting of two, four, and eight subarrays were developed in Ansys HFSS CAD. The effect of subarraying on the radiation pattern at the center frequency and the upper and the lower operating frequencies is studied. …”
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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 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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Application of Aperiodic “Einstein” 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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Single-cell bilayer design of a terahertz six-channel metasurface for simultaneous holographic and grayscale images by Zhiqiang Du, Chunhui Zhu, Zhengyong Song

“…However, some of these designs are implemented in a manner of interleaved subarrays that complicates the design and makes them difficult to achieve integration. …”
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Recent Developments of Reflectarray Antennas for Reconfigurable Beams Using Surface-Mounted RF-MEMS by Eduardo Carrasco, Mariano Barba, Manuel Arrebola, Jose A. Encinar

“…The latter are proposed as a low cost solution for reducing the number of electronic control devices as well as the manufacturing complexity of large reflectarrays. The main advantages and drawbacks of the grouping are evaluated in both pencil and shaped-beam antennas. …”
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