Precise GPS antennas for autonomous transportation

圆极化天线由于其能够减轻多径效应和提供方向自由，已被应用于许多无线应用，如GPS。然而，要在低成本物联网设备中大规模部署，特别是在自动驾驶汽车中，还需要解决许多问题。金属扼流圈接地平面传统上与GNSS天线一起使用，以避免或尽量减少多径信号的接收。然而，它们的体积大、重量重、制造成本高一直是个问题。我们将开发一种多频带紧凑型基片集成扼流圈接地结构，使用折叠波纹的新想法来解决这些挑战。光学透明天线可以集成在各种表面上，对其外观影响最小。这些天线的一个重要应用是安装在挡风玻璃上，用于汽车的无线电和GPS功能。透明导体的应用由于其高成本、高电阻率和具有挑战性的制造方法而受到限制。在本主题中，将基于新结构和增材制造方法设计和实现新型透明GPS天线。合作伙伴NovAtel公司目前生产精确定位系统，但需要在低轮廓天线方面取得重大进展，以完全支持新兴的汽车应用。NovAtel将利用研究成果影响未来几代的定位和自主仪器，理想情况下来自加拿大公司。NovAtel计划使用开发的低轮廓天线来增强其当前精准农业，国防，运输，海洋和测量的解决方案。

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.