本論文提出應用於77GHz防撞雷達短距天線，操作頻段為77GHz至81GHz，使用陣列天線作為此天線之基本架構，並使用多層板設計以此縮減整體所需面積，在整體車用雷達系統之頻段76GHz至81GHz，反射係數都可以達到-10dB以下。天線增益可達到14.2dBi，而在操作頻段77GHz至81GHz，輻射效率皆可以達到85%以上。

This paper proposes to apply to the 77GHz anti-collision radar short-range antenna, the operating frequency band is 77GHz to 81GHz, using the array antenna as the basic structure of this antenna, and using the multi-layer board design to reduce the overall required area, in the overall vehicle radar system In the frequency range of 76 GHz to 81 GHz, the reflection coefficient can reach below -10 dB. The antenna gain can reach 14.2dBi, and in the operating frequency range of 77GHz to 81GHz, the radiation efficiency can reach more than 85%.

[1] Dapeng Wu, Ziqiang Tong, Ralf Reuter, Heiko Gulan, Jian Yang , “A 76.5 GHz Microstrip Comb-Line Antenna Array for Automotive Radar System,” European Conference on Antennas and Propagation (EuCAP), April 2015, pp.1-3.
[2] Hsiao-Ning Wang, Yen-Tse Huang, and Shyh-Jong Chung , “A Dielectric Lens Antenna Feeding with Microstrip Patch Antennas for 77GHz Long Range Radar Application,” Asia Pacific Microwave Conference Proceedings, Dec. 2012, pp.412-414.
[3] Kunio Sakakibara, Atsushi Kunita, Daiki Kawase, Nobuyoshi Kikuma, Hiroshi Hirayama , “Broadband Millimeter-Wave Microstrip Comb-Line Antenna Using Corporate Feeding System,” European Microwave Conference , Oct. 2011, pp.902-905.
[4]紀益吉，利用反相位饋入串接微帶陣列之多層羅曼透鏡天線應用於77 GHz 車用防撞警示雷達系統，碩士論文，國立交通大學，2011。
[5] William Gautier; Armin Stehle; Bernhard Schonlinner; Volker Ziegler; Ulrich Prechtel; Wolfgang Menzel , “Antenna Arrays for RF-MEMS based 77 GHz On-Board Wake Vortex Detection Sensor,” 2007 2nd International ITG Conference on Antennas ,Oct 2007,pp.217-221.
[6] Jun Xu, Wei Hong, Hui Zhang and Yingrui Yu , “Design and Measurement of Array Antennas for 77GHz Automotive Radar Application,” 2017 10th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT), Oct 2017,pp.1-4.
[7] Aulia Dewantari , Se-Yeon Jeon , Sumin Kim, Seok Kim, Jaeheung Kim Min-Ho Ka , “Comparison of array antenna designs for 77GHz radar Applications,” 2016 Progress in Electromagnetic Research Symposium (PIERS), Nov 2016 ,pp.1092-1096.
[8] Shengchang Lan, Lei Duan, Zonglong He, Caitian Yang, Alexander Denisov, Sergey Ivashov, Lesya Anishchenko , “A 77GHz bioradar antenna module design using microstrip arrays,” 2016 IEEE International Symposium on Antennas and Propagation (APSURSI), Oct 2016,pp.1177-1178.
[9]Z. Chen and S. Otto, “A Taper Optimization for Pattern Synthesis of Microstrip Series-Fed Patch Array Antennas,” in Proc. 2009 European Wireless Technology Conference, pp. 160-163.
[10] J. Freese, R. Fakoby, “Synthesis of Microstrip Series-Fed Patch Array for 77 GHz–Sensor Applications,” Micrwave Conference, 2000 Asia-Pacific, pp. 29-33.
[11]R.Manohar, Maumita Dutta, Hema Singh, “Low Sidelobe Level Microstrip Patch Array EM Design and Performance Analysis,” in Proc. 2016 IEEE Annual India Conference (INDICON), pp. 1-6.
[12]B. Jones, F. Chow, A. Seeto, “The synthesis of shaped patterns with series-fed microstrip patch arrays,” in Proc. IEEE Transactions on Antennas and Propagation, pp. 1206-1212.
[13]Young-Bae Jung, Dae-young Park, Chang Won Jung, “Low Cost 24GHz Patch Array Antenna for High Sensitivity EM Sensor,” in Proc. 2010 Asia-Pacific Microwave Conference, pp. 2208-2211.
[14]Shengchang Lan, Lei Duan, Zonglong He, Caitian Yang, Alexander Denisov, Sergey Ivashov, Lesya Anishchenko, “A 77GHz bioradar antenna module design using microstrip arrays,” 2016 IEEE International Symposium on Antennas and Propagation (APSURSI) , Oct 2016,pp.1177-1178.
[15] Aulia Dewantari, Se-Yeon Jeon, Sumin Kim, Seok Kim, Jaeheung Kim, Min-Ho Ka, “Design and simulation of a Comb-line fed microstrip antenna array with low side lobe level at 77GHz for automotive collision avoidance radar,” 2016 Fourth International Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT) , Mar 2017,pp.87-90
[16] Peter Wenig, Robert Weigel, “Analysis of a microstrip patch array fed cylindric lens antenna for 77GHz automotive radar,” 2008 IEEE Antennas and Propagation Society International Symposium, Sep 2008, pp.1-4.