Precise GPS antennas for autonomous transportation

圆极化天线由于具有抗多径效应和提供定向自由度的能力，在GPS等无线应用中得到了广泛的应用。然而，在低成本物联网设备中大规模部署需要解决许多问题，特别是对于自动驾驶汽车。传统上，金属扼流圈地平面与GNSS天线一起使用，以避免或最大限度地减少对多径信号的接收。然而，它们的体积大、重量重、制造成本高一直是一个问题。为了应对这些挑战，我们将开发一种多频段紧凑型基板集成扼流圈接地结构。光学透明天线可以集成在不同的表面上，对外观的影响最小。这些天线的一个重要应用是汽车无线电和GPS用途的挡风玻璃。由于透明导体成本高、电阻率高、制造方法复杂，其应用受到限制。在这一主题中，将基于新的结构和附加制造方法设计和实施新型透明GPS天线。合作伙伴NovAtel Inc.目前生产精确定位系统，但需要在低剖面天线方面取得重大进展，以完全支持新兴的汽车应用。Novatel将利用研究成果来影响未来几代定位和自主仪器，最好是来自加拿大公司。Novatel计划使用开发的低调天线来支持其目前的精确农业、国防、交通、海洋和测量解决方案。

Circularly polarized antennas have been applied in many wireless applications such as GPS due to their abilityto mitigate the multipath effects and providing the freedom of orientations. However, many issues need to beaddressed for mass deployment in low-cost IoT devices and, in particular, for autonomous vehicles.Metallic choke ring ground planes are traditionally used along with GNSS antennas to avoid or minimize thereception of multipath signals. However, their large size, heavyweight, and costly fabrication have always beena problem. We will develop a multi-band compact substrate integrated choke ring ground structure using anovel idea of folded corrugations to address these challenges.Optically transparent antennas can be integrated on various surfaces with minimal effect on their appearances.An important application of these antennas is on the windshield for the car's radio and GPS purposes.Transparent conductors' applications are limited due to their high cost, high electrical resistivity, andchallenging manufacturing methods. In this theme, novel transparent GPS antennas will be designed andimplemented based on new structures and additive manufacturing methods.The Partner, NovAtel Inc, currently produces precise positioning systems but needs significant advances inLow-profile antennas to fully support emerging automotive applications. NovAtel will take research results toinfluence future generations of positioning and autonomous instruments, ideally from Canadian companies.NovAtel plans to use the developed low-profile antennas to empower its current solutions for precisionagriculture, defence, transportation, marine, and survey.