60 GHz polarimetric MIMO sensing: Architectures and technology

Abstract

Millimeter-Wave (mm-W) is considered a potential technology for high-data rate wireless transmission and for highresolution short-range radar, due to the 7-9 GHz bandwidth at the 60 GHz unlicensed band available worldwide. Developing ultrawideband architectures including multiple-input-multipleoutput (MIMO) antenna systems at mm-W offer many advantages including jointly optimized analogue and digital signal processing at carrier frequency and baseband. This allows for flexible antenna designs and reduced losses, as many passive structures can be avoided at both sides of the link. Besides, based on flexible polarimetric approaches, the polarimetric propagation of electromagnetic waves can be exploited. In this paper we present a 60 GHz polarimetric MIMO system architecture, which includes analogue miniaturized frontends designed and manufactured by multi-layer packaging technologies. Such architecture permitted the design of compact MIMO radar and multi-dimensional channel sounding. The MIMO approach allows not only polarimetric filtering and fully polarimetric/directional signal processing to increase the signalto-clutter-plus-noise ratio of mm-W radar systems, but also the full characterization of wireless channels including multipath with orthogonal polarizations.

60 GHz ultrawideband front-ends with gain control, phase shifter, and wave guide transition in LTCC technology

“…This verifies the performance and stability of the calibrated system for different phase steps in the frequency domain, which is reflected in the delay domain. The current solution allows for a delay domain resolution of about 0.1 ns based in the 7 GHz bandwidth channel sounder system [9].…”

“…For 60 GHz real-time channel measurements and radar the system must be calibrated [9], [10], [12]. For these measurements we use the architecture described in [9].…”

“…For these measurements we use the architecture described in [9]. The circuit architecture is based on an M-Sequence UWB radar for the baseband (0 to 3.5 GHz) [14] and frequency conversion from/to the ultra-wideband (UWB) range (3.5 to 10.5 GHz).…”

“…The front-ends are based on a 0.25 μm SiGe BiCMOS chip-set [7], [8] and LTCC for packaging. The front-ends are designed for applications in MIMO channel sounding and MIMO radar [9]. Channel sounders are used to characterize multipath propagation and multi-user access techniques with spatial diversity in time-variant radio environments [10].…”

The Role of Planning and Implementation of ICT in Operational Benefits

“…On the other hand, some companies, due to the lack of ICT use, hardly survive in a global, dynamic, and changing market [20]. However, poor ICT integration in companies has caused many markets to be considered as volatile and turbulent, and this has led many organizations with reports of failures in their implementation to seek to improve their administration [21]. Likewise, these ICT facilitate SC management in companies that are geographically distributed in different countries and, in this context, Meindl and Chopra [22] declare that the exchange of information with appropriate technologies facilitates this process and, in turn, Avelar-Sosa et al [23] mention that these ICTs favor SC integration with partners and that their implementation must be carefully planned.…”