Antenna Concepts for Millimeter-Wave Automotive Radar Sensors
Antenna Concepts for Millimeter-Wave Automotive Radar Sensors
复制标题
DOI：
10.1109/jproc.2012.2184729
复制
发表时间：
2012-03
影响因子：
20.6
通讯作者：
W. Menzel;A. Moebius
中科院分区：
文献类型：
--
作者：
W. Menzel;A. Moebius
自1999年以来，汽车雷达已投放市场，频率范围在24 GHz和76.5 GHz左右，新的频段范围为77至81 GHz，适用于中短程传感器。各个传感器天线的选择和设计取决于对高增益和低损耗的要求，以及车辆集成的小尺寸和深度，毫米波频率范围的挑战，以及这种商业应用的巨大成本压力。因此，平面天线在较低频率范围内占主导地位，而透镜和反射器天线在76.5 GHz时是首选，部分采用折叠结构。随着对车辆前方或周围景物的更详细观察的需求的增加，已经设计了多波束天线或扫描天线，并且正在使用或开发基于具有多个集成天线的（数字）波束成形的解决方案。一般天线概念（部分包括一些系统方面）以及三种实现的天线配置将在本文中详细描述。
Automotive radars are on the market since 1999, both in the frequency range around 24 GHz as well as 76.5 GHz, with a new frequency band ranging from 77 to 81 GHz intended for medium and short-range sensors. The choice and design of the respective sensor antennas are determined by the requirement for high gain and low loss combined with small size and depth for vehicle integration, the challenges by the millimeter-wave frequency range, and a great cost pressure for this commercial application. Consequently, planar antennas are dominating in the lower frequency range, while lens and reflector antennas had been the first choice at 76.5 GHz, partly in folded configurations. With increasing requirements towards a much more detailed observation of the scenery in front or around the vehicle, multibeam antennas or scanning antennas have been designed, and solutions based on (digital) beamforming with a number of integrated antennas are in use or under development. General antenna concepts, partly including some system aspects, as well as three realized antenna configurations will be described in detail in this contribution.