Switched Beam SIW Horn Arrays at 60 GHz for 360° Reconfigurable Chip-to-Chip Communications With Interference Considerations
Switched Beam SIW Horn Arrays at 60 GHz for 360° Reconfigurable Chip-to-Chip Communications With Interference Considerations
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DOI：
10.1109/access.2021.3097036
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发表时间：
2021-01-01
期刊：
影响因子：
3.9
通讯作者：
Melde, Kathleen L.
中科院分区：
文献类型：
--
作者：
Baniya, Prabhat;Melde, Kathleen L.
多核多芯片（MCMC）系统中的传统有线互连可以被芯片集成的切换波束天线阵列取代，以提供可重构的芯片到芯片通信。通过简单地切换阵列的定向光束，芯片可以动态地与周围的邻居通信。然而，当多对芯片同时通信时，来自阵列的非预期方向的辐射会引起干扰。在本文中，这种并发芯片到芯片的通信系统的噪声和干扰的限制进行了分析，在60 GHz的IEEE 802.11ay标准中定义的信道。每个阵列由印刷在薄介质基板上的八个基板集成波导（SIW）喇叭元件组成。这些元件可以单独激发，以产生八个定向端射光束，在水平面上提供全360度覆盖。该基板作为一个混合空间表面波互连（HSSW-I），允许近场，空间和表面波耦合之间发生的阵列，从而增加芯片间的传输。天线和链路参数，决定了这样的系统的信号噪声加干扰比（SNIR）建立考虑所有的主要组成部分。最大可实现的数据速率，然后确定基于SNIR，计算从测量和模拟的阵列之间的传输系数。
Traditional wired interconnects in multicore multichip (MCMC) systems can be replaced with chip-integrated switched beam antenna arrays to provide reconfigurable chip-to-chip communications. By simply switching the directive beams of the arrays, the chips can be made to dynamically communicate with their surrounding neighbors. Radiation from the arrays in the unintended direction, however, causes interference when multiple pairs of chips are simultaneously communicating. In this paper, the noise and interference limitations of such concurrent chip-to-chip communication systems are analyzed at 60 GHz for the channels defined in the IEEE 802.11ay standard. Each array consists of eight substrate integrated waveguide (SIW) horn elements printed on a thin dielectric substrate. The elements can be individually excited to produce eight directive endfire beams, providing full 360 degrees coverage, in the horizontal plane. The substrate acts as a hybrid space-surface wave interconnect (HSSW-I) that allows near-field, space and surface wave coupling to occur between the arrays, and thus, increases interchip transmission. The antenna and link parameters that dictate the signal-to-noise-plus-interference ratio (SNIR) of such systems are established by considering all the major components. The maximum achievable data rates are then determined based on the SNIR, calculated from the measured and simulated transmission coefficients between the arrays.