Hybrid Beamforming for mm-wave Antenna Subsystems based on Ridge Gap Waveguide Technology

基于脊隙波导技术的毫米波天线子系统混合波束形成

• 批准号: 543491-2019
• 负责人: Sebak, Abdel
• 金额: $ 1.82万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680759
• 关键词: Hybrid; Beamforming; mm; wave; Antenna

High data rates and large bandwidths are among the main characteristic of the 5G technology. These features contradict the expected increase in the number of users and the limited spectrum. Using space diversity is a promising technique that has been promoted to solve these issues using large arrays at high frequencies. The promoted solution is referred to as millimeter massive multi-input multi-output (MIMO) systems. In which, a large number of antennas is used to form a sharp beam directed to a specific user to reduce the co-channel interference to other users and allowing the transmission with high signal-to-interference ratio (SNIR). Traditionally, beamforming is done in the digital domain, however, adding a beam switching feeding structure to the antennas can enhance the performance of the beamforming dramatically. The mixture of the beam switching network and the digital beamforming is referred to as Hybrid Beamforming. The beam switching network is responsible for broadly selecting a certain coverage area (sector), while the digital processing unit can reshape the beam within the selected sector. This proposal aims to develop a hybrid beamforming prototype based on ridge gap waveguide technology. The final prototype should include a digital processing unit that controls multiple identical beam switching networks. Each beam switching network will be responsible of selecting a certain sector for the radiation, while the digital processing unit will apply weighted signals for each network to reshape the beam within the selected sector. Through controlling both the magnitude and the phase of the signal applied to each network, the beam can be allocated adaptively to a specific user.

高数据速率和大带宽是5G技术的主要特征之一。这些特征与用户数量的预期增加和有限的频谱相矛盾。使用空间分集是一种很有前途的技术，已被推广到解决这些问题，使用大型阵列在高频率。所推广的解决方案被称为毫米大规模多输入多输出（MIMO）系统。其中，大量的天线被用来形成指向特定用户的尖锐波束，以减少对其他用户的同信道干扰，并允许以高信号干扰比（SNIR）传输。 传统的波束形成是在数字域中完成的，然而，在天线上添加波束切换馈电结构可以显著地提高波束形成的性能。波束切换网络和数字波束形成的混合被称为混合波束形成。波束切换网络负责广泛地选择某个覆盖区域（扇区），而数字处理单元可以在所选扇区内对波束进行整形。本研究旨在发展一种基于脊隙波导技术的混合波束形成原型。最终的原型应该包括一个数字处理单元，控制多个相同的波束切换网络。每个波束切换网络将负责选择用于辐射的特定扇区，而数字处理单元将为每个网络应用加权信号，以在所选扇区内对波束进行整形。通过控制施加到每个网络的信号的幅度和相位，波束可以自适应地分配给特定用户。