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
Satellite communication requires a long-distance wireless link, which necessitates a sufficiently high gain from the antenna, the entry point of a wireless communication device. Array antennas, commonly used to achieve high gain, face challenges such as cumulative metal and dielectric losses in the feed system and large physical volume. The use of optical curved lenses for high gain at millimeter-wave frequencies has been proposed, but such lenses have drawbacks, including large volume, as well as high manufacturing, installation, and maintenance costs. This paper addresses the design of a planar metasurface lens capable of amplifying millimeter-wave signal strength, serving as an alternative to array antennas and curved lenses. A planar lens with a 100 mm × 100 mm area that enhances the radiation gain of K-band antennas, a representative frequency range for satellite communication, by more than 9 dB is implemented. To verify the design, the radiation characteristics of the source antenna combined with the metasurface lens are measured and analyzed using a Vector Network Analyzer (VNA) and an Anechoic Chamber. Observations of the proposed antenna's frequency response characteristics demonstrate that the antenna gain increases by more than 10 dB in the K-band, and the beamwidth narrows, indicating high directivity.
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.
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UCI(KEPA) : I410-151-25-02-092315886