Per-Antenna Self-Interference Cancellation Beamforming Design for Digital Phased Array

Liu, Ao; Sheng, Weixing; Riihonen, Taneli

doi:10.1109/lsp.2022.3224829

Cited by 10 publications

(3 citation statements)

References 45 publications

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“…Recently, the simultaneous transmit and receive (STAR) technique has attracted great attention because it address key requirements and bottlenecks [1][2][3]. Theoretically, the spectral efficiency of wireless communication systems can be doubled by utilizing the STAR technique [4].…”

Section: Introductionmentioning

confidence: 99%

Dual circularly polarized monostatic STAR antenna with enhanced isolation

Mingcong,

Xizhang,

Yanqun

et al. 2024

J. of Syst. Eng. Electron.

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Separated transmit and receive antennas are employed to improve transmit-receive isolation in conventional short-range radars, which greatly increases the antenna size and misaligns of the transmit/receive radiation patterns. In this paper, a dual circularly polarized (CP) monostatic simultaneous transmit and receive (MSTAR) antenna with enhanced isolation is proposed to alleviate the problem. The proposed antenna consists of one sequentially rotating array (SRA), two beamforming networks (BFN), and a combined decoupling structure. The SRA is shared by the transmit and receive to reduce the size of the antenna and to obtain a consistent transmit and receive pattern. The BFN achieve right-hand CP for transmit and left-hand CP for receive. By exploring the combined decoupling structure of uniplanar compact electromagnetic band gap (UC-EBG) and ringshaped defected ground structure (RS-DGS), good transmitreceive isolation is achieved. The proposed antenna prototype is fabricated and experimentally characterized. The simulated and measured results show good agreement. The demonstrate transmit/receive isolation is height than 33 dB, voltage standing wave ratio is lower than 2, axial ratio is lower than 3 dB, and consistent radiation for both transmit and receive is within 4.25−4.35 GHz.

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Section: Introductionmentioning

confidence: 99%

Dual circularly polarized monostatic STAR antenna with enhanced isolation

Mingcong,

Xizhang,

Yanqun

et al. 2024

J. of Syst. Eng. Electron.

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show abstract

“…For X-band 8 × 8 transmit and receive subarrays, an average isolation improvement of about 29.3 dB was achieved with only 0.2 dB of transmit gain loss. Ao Liu et al [ 14 ] developed a transmit SIC beamforming design to minimize the power of SI on a per-antenna basis, which reduced the need for SIC technologies other than beamforming in phased array systems. However, most of these approaches focus primarily on improving isolation using beamforming and digital cancellation techniques, with little focus on the impact of transmit and receive apertures on the STAR system.…”

Section: Introductionmentioning

confidence: 99%

A Sparse Shared Aperture Design for Simultaneous Transmit and Receive Arrays with Beam Constraints

Wei

Xie

et al. 2023

Sensors

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The utilization of efficient digital self-interference cancellation technology enables the simultaneous transmit and receive (STAR) phased array system to meet most application requirements through STAR capabilities. However, the development of application scenario requirements makes array configuration technology for STAR phased arrays increasingly important. Thus, this paper proposes a sparse shared aperture STAR reconfigurable phased array design based on beam constraints which are achieved by a genetic algorithm. Firstly, a design scheme for transmit and receive arrays with symmetrical shared apertures is adopted to improve the aperture efficiency of both transmit and receive arrays. Then, on the basis of shared aperture, sparse array design is introduced to further reduce system complexity and hardware costs. Finally, the shape of the transmit and receive arrays is determined by constraining the side lobe level (SLL), main lobe gain, and beam width. The simulated results indicate that the SLL of the transmit and receive patterns under beam-constrained design have been reduced by 4.1 dBi and 7.1 dBi, respectively. The cost of SLL improvement is a reduction in transmit gain, receive gain, and EII of 1.9 dBi, 2.1 dBi, and 3.9 dB, respectively. When the sparsity ratio is greater than 0.78, the SLL suppression effect is also significant, and the attenuation of EII, transmit, and receive gains do not exceed 3 dB and 2 dB, respectively. Overall, the results demonstrate the effectiveness of a sparse shared aperture design based on beam constraints in producing high gain, low SLL, and low-cost transmit and receive arrays.

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“…Digital beamforming involves Multiple-Input-Multiple-Output (MIMO) for signal processing which is a highly adaptable approach for generating separate steerable multiple beams (Cao et al, 2021). In literature researchers (Cao et al, 2021) (Liu et al, 2022) (Liao et al, 2015) have accomplished beam steering using array antenna technology. Digital beamforming consists of massive antenna arrays that operate as a powerful tool to fulfil some of the most difficult required features of forthcoming wireless transmission networks, specifically in rich spreading conditions.…”

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confidence: 99%

A review of beamforming microstrip patch antenna array for future 5G/6G networks

Saeed,

Nwajana

2024

Front. Mech. Eng.

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With the increase in demand for high data rates and high bandwidth because of multiple users all over the globe, the technology has moved toward the next-generation of wireless communication. This rapid advancement of wireless communication technologies has led to the emergence of 5G networks, which promise significantly higher data rates, lower latency, and enhanced connectivity. Researchers believe that five essential techniques can enable 5G. Beamforming is one of those essentials, as it plays a vital role in achieving reliable and high-capacity communication. This review article portrays a comprehensive analysis of the 5G beamformer Microstrip Patch Antenna array techniques for communication systems. The paper comprises of a deep overview of the fundamental concepts and principles of beamforming, including analog, hybrid, and digital beamforming techniques. It explores the advantages and disadvantages of each approach and discusses their suitability for 5G applications. An in-depth examination of various beamforming techniques employed in 5G, encompassing traditional beamforming, massive Multiple-Input-Multiple-Output beamforming, hybrid beamforming, and adaptive beamforming. The discussion encompasses the strengths, weaknesses, and performance trade-offs of each technique, along with their applicability in diverse deployment scenarios and applications. The review of multiple couplers that are used for the feeding of the antenna is discussed with included hybrid coupler, Wilkinson power divider, branch line coupler, and butler matrix in beamformer smart antenna for 5G/6G communications. Numerous beamforming techniques are compared based on their merits, demerits, and applications. Moreover, the dielectric substrate utilized to design the beamformer was also reviewed. The findings presented in this paper serve as a valuable resource for the researcher, scholars, and engineers working in the field of 5G wireless communications and antenna designing, facilitating the development and deployment of efficient and robust beamforming solutions for future 5G networks.

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Per-Antenna Self-Interference Cancellation Beamforming Design for Digital Phased Array

Cited by 10 publications

References 45 publications

Dual circularly polarized monostatic STAR antenna with enhanced isolation

Dual circularly polarized monostatic STAR antenna with enhanced isolation

A Sparse Shared Aperture Design for Simultaneous Transmit and Receive Arrays with Beam Constraints

A review of beamforming microstrip patch antenna array for future 5G/6G networks

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