Circularly Polarized Antenna Array for Automotive Applications

被引：0
|
作者：
Hamberger, Gerhard F. [1 ]
Trummer, Stefan [2 ]
Siart, Uwe [1 ]
Eibert, Thomas E. [1 ]
机构：
[1] Tech Univ Munich TUM, Chair High Frequency Engn, Dept Elect & Comp Engn, D-80290 Munich, Germany
[2] Astyx GmbH, Lise Meitner Str 2a, D-85521 Ottobrunn, Germany
来源：
2017 42ND INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2017年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A circularly polarized antenna array for the automotive radar frequency band at a center frequency of 79.5 GHz is proposed. The antenna array consists of 10 dual-linearly polarized square microstrip patch elements in 50 Omega series-feed configuration. Amplitude tapering is applied in order to reduce the sidelobe level. The antenna array is fed from a WR10 rectangular waveguide and a transition which transforms the waveguide mode into a microstrip line mode. A 3 dB power splitter and a phasing line are used to feed the two channels of the dual-linearly polarized antenna array with equal magnitudes and 90. phase offset. As a result, the antenna radiates a circularly polarized wave over the complete frequency band from 78 to 81GHz with an axial ratio in boresight direction of lower than 3 dB.
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页数：3
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