Fixed multi beam offset spherical reflector antenna at 28 GHZ by Arjunaidi, Ayuni Afiqah

“…These days, the implementation of array antenna to produce multiple beams by using digital beamforming technology (DBF) is often seen at the base station pole in urban district. …”
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Highly Integrated Low-Profile Multilayer Dual-Polarized Phased Array Antenna With Truncated Cavities for First Pulsed Bistatic L-Band Airborne SAR Sensor by Diego Lorente, Markus Limbach, Bernd Gabler, Hector Esteban, Vicente E. Boria

“…Next-generation SAR sensors will enhance the radar resolution capabilities by means of digital beamforming (DBF) techniques along with multistatic systems. …”
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A Signal Model Based on the Space–Time Coding Array and a Novel Imaging Method Based on the Hybrid Correlation Algorithm for F-SCAN SAR by Yuqing Liu, Pengbo Wang, Zhirong Men, Yanan Guo, Tao He, Rui Bao, Lei Cui

“…The F-SCAN principle is a better alternative to the scan-on-receive technique (SCORE) based on digital beamforming (DBF), which can avoid low gain caused by a conventional broad beam in the case of a wide swath. …”
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Reconfigurable intelligent surfaces aided mmWave NOMA: joint power allocation, phase shifts, and hybrid beamforming optimization by Xiu, Yue, Zhao, Jun, Sun, Wei, Renzo, Marco Di, Gui, Guan, Zhang, Zhongpei, Wei, Ning

“…Specifically, first, the non-convex problem is transformed into three subproblems, i.e., power allocation, joint phase shifts and analog beamforming optimization, and digital beamforming design. Then, we solve the power allocation problem by keeping fixed the phase shifts of the RIS and the hybrid beamforming. …”
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Full-Duplex in Massive Multiple-Input Multiple-Output by Tho Le-Ngoc, Yuanzhe Gong, Mobeen Mahmood, Asil Koc, Robert Morawski, James Gary Griffiths, Philippe Guillemette, Jamal Zaid, Peiwei Wang

“…It is pointed out that the single-stage digital beamforming (DBF) scheme would introduce an impractically high complexity unsuitable for implementing FD-mMIMO. …”
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A Smart Handover Strategy for 5G mmWave Dual Connectivity Networks by Vigneswara Rao Gannapathy, Rosdiadee Nordin, Nor Fadzilah Abdullah, Asma Abu-Samah

“…Notably, when compared to fixed or traditional handover techniques in digital beamforming configurations, the SHS mechanism exhibits an impressive enhancement, with over 15% (80 Mbps) increase in PDCP throughput and a substantial reduction of more than 77% (4.85 ms) in latency.…”
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Hybrid Beamforming Design for Self-Interference Cancellation in Full-Duplex Millimeter-Wave MIMO Systems with Dynamic Subarrays by Gengshan Wang, Zhijia Yang, Tierui Gong

“…First, assuming no SI, we obtain the optimal fully digital beamformers and combiners via the singular value decomposition of the uplink and downlink channels and the water-filling power allocation. …”
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Hybrid beamforming design for orthogonal frequency division multiplexing dual‐function radar‐communication system with optimised transmit beampattern by Weihuang Xiao, Ping Chu, Bin Liao

“…Specifically, the analogue beamformer and digital beamformer for each subcarrier at the transmitter are designed by maximising the integrated mainlobe‐to‐sidelobe ratio (IMSR) of the transmit beampattern under the restriction of the communication signal‐to‐interference‐plus‐noise ratio (SINR). …”
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Multibeam antenna design by Ibrahim, Siti Zuraidah, Hamid, Mohamad Rijak

“…In fact, there are few popular methods of constructing a multibeam antenna such as using digital beamformer, Blass Matrix and lens based beamformer, but the simplest one is by integrating linear antenna array with Butler Matrix. …”

Design of delta-sigma modulator for ultrasound imaging by Song, Pengyu

“…The modulator is designed for a portable ultrasound digital beamformer to digitize ultrasound signal centered at 3.5MHz with fractional bandwidth of 0.6. …”
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A leakage‐based hybrid beamforming design for multi‐user mmWave massive MIMO systems by Ran Zhang, Ye Wang, Youhong Feng

“…To overcome the difficulty of solving the multi‐variable design problem, a novel two‐stage HBF scheme to optimize the analogue and digital beamformers are proposed. In particular, an orthogonal matching pursuit‐based method and a joint design method are introduced respectively to find the solution in the analogue stage. …”
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Distributed mechanism design for multi‐cell communications aided by multiple reconfigurable intelligent surfaces by Boya Di

“…Meanwhile, given the incomplete knowledge of other cells, each BS independently optimises its digital beamformer based on its iteratively updated estimates over the other cells without revealing any location and channel information of its own serving users. …”
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The Room Temperature Multi-Channel Heterodyne Receiver Section of the PHAROS2 Phased Array Feed by Alessandro Navarrini, Alessandro Scalambra, Simone Rusticelli, Andrea Maccaferri, Alessandro Cattani, Federico Perini, Pierluigi Ortu, Juri Roda, Pasqualino Marongiu, Andrea Saba, Marco Poloni, Adelaide Ladu, Luca Schirru

“…Such a “Warm Section” (WS) receiver is part of phased arrays for reflector observing systems 2 (PHAROS2), a C-band phased array feed (PAF) demonstrator with digital beamformer for radio astronomy application. The WS receiver is cascaded to the PHAROS2 cryostat, which includes an array of Vivaldi antennas with low noise pre-amplification stages. …”
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Over-the-Air Calibration of mmW Imaging Radars Using Uncorrelated Continuous Wave Signals by Simon Heining, Reinhard Feger, Christoph Wagner, Andreas Stelzer

“…The presented calibration shows equal side-lobe suppression in the digital beamformer compared to the conventional target-based calibration approach.…”
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Design and Implementation of Analog-Digital Hybrid Beamformers for Low-Complexity Ultrasound Systems: A Feasibility Study by Heechul Yoon, Junseung Kim, Kunkyu Lee, Tai-Kyong Song

“…To mitigate this limitation, this study revisits the general structures of analog and digital beamformers and introduces a hybrid approach, referred to as analog-digital hybrid beamforming, to implement efficient ultrasound systems. …”
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