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.
초록·키워드
This paper presents a reconfigurable antenna array operating at 28 GHz for fifth-generation (5G) Vehicle-to- Everything (V2X) communications. The proposed design employs a hybrid multilayer architecture comprising four compact Yagi–Uda antenna elements integrated with PIN diode-controlled parasitic structures to enable dynamic beam reconfiguration. By selectively controlling the PIN diodes, the surface current and associated magnetic field distributions are reconfigured, producing three distinct radiation modes: end-fire toward the negative z-direction, central end-fire, and end-fire toward the positive z-direction. This controlled redistribution of the magnetic field enhances electromagnetic coupling between the driven and parasitic elements, resulting in efficient beam switching in the azimuth and elevation planes. Consequently, the array provides wide/ cumulative azimuthal coverage through switching among multiple radiation states, with a vertical steering range of ±30° while maintaining a gain variation below 1 dB. Simulation results demonstrate a peak realized gain of 14.47 dBi, port isolation exceeding 20 dB, and a wide impedance bandwidth (|S<sub>11</sub>| < −10 dB) extending from 23.28 to 29.31 GHz. These results confirm that the proposed reconfigurable array achieves high-gain, wideband, and electronically reconfigurable switched-beam operation, making it a promising candidate for reliable millimeter-wave 5G V2X communications and next-generation intelligent transportation systems.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.