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MIMO antenna with elevation detection

An antenna and transmitting antenna technology, applied in the field of pitch angle, can solve problems such as high cost

Active Publication Date: 2017-04-19
APTIV TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this approach typically requires a complex multi-layer feed structure which results in undesirably high costs

Method used

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  • MIMO antenna with elevation detection
  • MIMO antenna with elevation detection
  • MIMO antenna with elevation detection

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Embodiment Construction

[0027] In general, multiple-input multiple-output (MIMO) antenna architectures provide electronic scanning with improved spatial coverage and resolution. MIMO operation typically requires multiple transmit and multiple receive antennas along multiple transmitters and receivers. However, the teachings presented herein can also be applied to simpler receive antenna configurations, eg, a single receive antenna comprising a single element. This paper describes different configurations of MIMO antennas, where the number of transmit and receive antennas depends on the required spatial coverage and resolution in both azimuth (horizontal) and elevation (vertical) dimensions. The number of transmitters and receivers may be equal to the number of transmit and receive antennas, or a correspondingly smaller number time-shared between transmit and / or receive antennas. However, for best performance, parallel transmit and receive channels are used, one channel per antenna rather than time d...

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Abstract

A multiple input multiple output (MIMO) antenna (520) for a radar system includes a receive antenna (520), a first transmit-antenna-arrangement (822), and a second transmit-antenna-arrangement (824). The receive-antenna (120) is configured to detect radar-signals (920) reflected by a target toward the receive-antenna (120). The first transmit-antenna-arrangement (822) includes a first vertical-array (870) of radiator elements (136) and a second vertical-array (872) of radiator elements (136). The first transmit-antenna-arrangement (822) is configured so the first vertical-array (870) can be selectively coupled to a transmitter (910) independent of the second vertical-array (872). The second transmit-antenna-arrangement (824) includes a third vertical-array (874) of radiator elements (136) and a fourth vertical-array (876) of radiator elements (136). The second transmit-antenna-arrangement (824) is configured so the third vertical-array (874) can be selectively coupled to a transmitter (910) independent of the fourth vertical-array (876). The second transmit-antenna-arrangement (824) is vertically offset from the first transmit-antenna-arrangement (822) by a vertical offset distance (126) selected so an elevation angle to the target can be determined by the receive-antenna (120).

Description

[0001] Cross References to Related Applications [0002] This application is claimed as a continuation-in-part of US Patent Application No. 14 / 197404, filed March 5, 2014, entitled "MIMO ANTENNA WITH ELEVATION DETECTION," the entire disclosure of which is hereby incorporated by reference. technical field [0003] The present disclosure relates generally to multiple-input multiple-output (MIMO) antennas for radar systems, and more particularly to vertically offsetting one transmit antenna from another so that the elevation angle to a target can be determined. Background technique [0004] Many ground-based vehicular (eg, automotive) radar systems in use today are only capable of determining range and horizon or azimuth to a target or object. The transmit and receive antennas for such systems are typically vertical arrays of radiator and detector elements or patches, respectively. However, it has been recognized that it is desirable to determine the vertical or pitch angle to...

Claims

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Application Information

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IPC IPC(8): H01Q21/24H01Q21/00G01S13/931
CPCH01Q21/0025H01Q21/24H01Q21/245G01S13/878G01S13/931H01Q21/065H01Q25/002
Inventor J·F·瑟西S·W·阿兰德
Owner APTIV TECH LTD