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차량충돌방지용 레이더를 위한 76~77GHz대의 마이크로스트립 패치 배열안테나 설계

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Alternative Title
The Design of The Microstrip Patch Array Antenna for The Anti-crash Radar System
Abstract
본 논문에서는 GaAs 기판을 이용하여 차량충돌방지용 레이더(Radar)을 위한 마이크로 스트립 패치 배열안테나(Microstrip Patch Array Antenna)를 제안하였다. 제안한 안테나의 중심주파수는 76~77 GHz이다. 이 안테나는 좁은 빔폭(Beam Width)과 이득(Gain)을 고려하여 전체 64개의 소자를 8×8 배열로 구성하여 균일 분포로 병렬급전 하였다. 일반적인 Duroid 기판을 사용하면 최소 선폭 (0.127 mm)보다 더 작아져서 구현하는데 어려움이 있다. 이것을 GaAs 기판을 사용함으로써 그 문제를 해결하였다. 그 결과 이득은 9.88 dBi, 반사손실(Return Loss)은 -28.79 dB, 빔폭은 12.34。 , 부엽준위(SLL: Side Lobe Level)는 -14 dB, 그리고 중심주파수(Center Frequency)는 77.47 GHz로 나왔다 따라서 이 결과를 통해서 MMIC(Monolitic Microwave Integrated Circuit)에서 사용하는 GaAs 기판을 사용함으로써 MMIC소자와도 연결하여 동일 기판 위에 집적 할 수 있음을 확인하였다.
In this paper, a micro-strip patch array antenna on GaAs substrate is proposed for automotive radar preventing cars from crashes. The center frequency of the proposed antenna is 76-77 GHz.

In order to get narrow beam width, low side lobe level, and high gain, the array on each substrate is composed of 8x8 array elements with a corperate feeding network. When it was used the common duroid substrate, it is found difficulty in the implementing because of line width smaller than minimum line width(0.127 mm). This problem is solved by using GaAs substrate. As a result, the antenna on the GaAs substrate has shown a gain of 9.88 B i , return loss -27.79 dE3, beamwidth 12.34。, side lobe level -14 dB and center frequency 77.47 GHz. From the result, it is possible that the proposed antenna is integrated with MMIC device when using GaAs substrate.
In this paper, a micro-strip patch array antenna on GaAs substrate is proposed for automotive radar preventing cars from crashes. The center frequency of the proposed antenna is 76-77 GHz.

In order to get narrow beam width, low side lobe level, and high gain, the array on each substrate is composed of 8x8 array elements with a corperate feeding network. When it was used the common duroid substrate, it is found difficulty in the implementing because of line width smaller than minimum line width(0.127 mm). This problem is solved by using GaAs substrate. As a result, the antenna on the GaAs substrate has shown a gain of 9.88 B i , return loss -27.79 dE3, beamwidth 12.34。, side lobe level -14 dB and center frequency 77.47 GHz. From the result, it is possible that the proposed antenna is integrated with MMIC device when using GaAs substrate.
Author(s)
朴商吾鄭天錫
Issued Date
2002
Type
Research Laboratory
URI
https://oak.ulsan.ac.kr/handle/2021.oak/3972
http://ulsan.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002024841
Alternative Author(s)
Park, Sang-OJung, Chun-Suk
Publisher
공학연구논문집
Language
kor
Rights
울산대학교 저작물은 저작권에 의해 보호받습니다.
Citation Volume
33
Citation Number
2
Citation Start Page
63
Citation End Page
86
Appears in Collections:
Research Laboratory > Engineering Research
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