인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국전자파학회JEES Journal of Electromagnetic Engineering And Science Journal of Electromagnetic Engineering And Science Vol.26 No.3
- 발행연도
- 2026.5
- 수록면
- 271 - 279 (9page)
이용수
초록· 키워드
In this paper, a multibeam antenna without a phase shifter is designed for railway communications in the upper 5G band (28 GHz). Railway turning angles can reach up to -20° to 20° depending on line geometry and train speed. Based on the curvature of railway tracks in realistic scenarios, the required beam deflection range spans -30° to 30°. This limited beam deflection range makes the Rotman lens a suitable replacement for phase shifters in beam steering, thereby significantly reducing system cost. Depending on the choice of antenna element, the antenna can create either linear or circular polarization. The measurement results demonstrate that the linearly and circularly polarized antennas achieved maximum directivities of 10.8 dBi and 11.2 dBi, respectively. The antenna bandwidth under linear (circular) polarization reached 2 GHz (1.8 GHz), which is sufficient to support the high data-rate requirements of the 5G communications. In addition, the antenna size was minimized to fit into a shark-fin cover mounted on the vehicle.
#Beamforming Antenna
#Circular Polarization
#Linear Polarization
#Railway Communication
#Rotman Lens
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목차
- Abstract
- I. INTRODUCTION
- II. PROPOSED ANTENNA DESIGN STUDIES
- III. RESULTS AND DISCUSSION
- IV. CONCLUSION
- REFERENCES