Assessment of a Millimeter-Wave Antenna System for MIMO Radar Applications

Multiple-input–multiple-output (MIMO) radars show improved angular resolution compared to traditional phased-array radar systems. Exploiting the advantages of MIMO radars could thus significantly improve the performances of the next generation of automotive radar sensors. The placement and the characteristics of the antenna arrays affect the performance of the MIMO system. For such applications, different metrics like the ambiguity function of the antenna system must be accurately evaluated. This letter presents a detailed characterization of an MIMO antenna configuration at millimeter-wave frequencies. To prove the effectiveness of this method, a five-element nonuniform antenna configuration based on cavity antenna arrays has been designed and tested.

[1]  Hao Wang,et al.  Introduction to Genetic Algorithms in Electromagnetics , 1995 .

[2]  P. Vainikainen,et al.  Ambiguity analysis of isolation - based multi-antenna structures on mobile terminal , 2011, Proceedings of the 5th European Conference on Antennas and Propagation (EUCAP).

[3]  A. F. Molisch,et al.  Propagation Parameter Estimation, Modeling and Measurements for Ultrawideband MIMO Radar , 2011, IEEE Transactions on Antennas and Propagation.

[4]  Christian Waldschmidt,et al.  Future trends and directions in radar concerning the application for autonomous driving , 2014, 2014 44th European Microwave Conference.

[5]  Christian Waldschmidt,et al.  A 77-GHz cavity antenna array in PCB technology , 2015, 2015 IEEE 15th Mediterranean Microwave Symposium (MMS).

[6]  T. Zwick,et al.  Millimeter-Wave Technology for Automotive Radar Sensors in the 77 GHz Frequency Band , 2012, IEEE Transactions on Microwave Theory and Techniques.

[7]  Xiang Li,et al.  Antenna Geometry Conditions for MIMO Radar With Uncoupled Direction Estimation , 2012, IEEE Transactions on Antennas and Propagation.

[8]  M. Obradovic,et al.  Ambiguity characterization of arbitrary antenna array: type I ambiguity , 1998, 1988 IEEE 5th International Symposium on Spread Spectrum Techniques and Applications - Proceedings. Spread Technology to Africa (Cat. No.98TH8333).

[9]  Robert Weigel,et al.  Lens-based 77 GHZ MIMO radar for angular estimation in multitarget environments , 2014 .

[10]  Jian Li,et al.  MIMO Radar with Colocated Antennas , 2007, IEEE Signal Processing Magazine.