Precise GPS antennas for autonomous transportation

圆极化天线由于能够有效地抑制多径效应和提供方向自由度而被广泛应用于GPS等无线应用中。然而，在低成本物联网设备的大规模部署中，特别是在自动驾驶汽车中，需要解决许多问题。传统上，金属扼流环接地层与GNSS天线一起沿着使用，以避免或最大限度地减少多径信号的接收。然而，它们体积大、重量重、制造成本高一直是个问题。我们将开发一种多波段紧凑型基板集成扼流圈接地结构，采用新颖的折叠波纹概念来解决这些挑战。光学透明天线可以集成在各种表面上，对它们的外观影响最小。这些天线的一个重要应用是在挡风玻璃上，用于汽车的无线电和GPS目的。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。在这一主题中，将基于新的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 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，以全面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计划使用开发的低剖面天线来增强其目前的精准农业，国防，运输，海洋和调查解决方案。

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.