多種饋入結構之28 GHz微帶天線設計

Abstract

本論文主旨在設計多種饋入結構之毫米波(28 GHz) 微帶天線，以適用各種收發系統結構。這些饋入結構包含微帶線饋入、同軸電纜饋入以及矩形導波管饋入等。同時結合微帶線饋入及同軸電纜饋入結構、我們亦設計完成一8 X 1串接微帶天線陣列，並用於一28 GHz 視訊傳輸系統。由於操作於毫米波頻段，不連續結構所造成的電容寄生效應嚴重，因此必須以全波分析軟體(HFSS) 進行分析模擬與設計。同時由於波長短，製造的精密度高，需有良好的設計，方能達成目標。量測出來的結果顯示，無論單一天線或天線陣列的反射損耗頻譜及輻射場型，皆與設計結果相當吻合。

In this thesis the main idea is the design of millimeter wave (28 GHz) microstrip antenna with various feeding configurations, in order to be applicable in all transceiver systems. The feeding configurations include microstrip line-fed, coaxial line-fed, and rectangular waveguide-fed configurations …etc. With the microstrip line-fed and coaxial line-fed structures individually, we also complete one 8 X 1 series-fed microstrip antenna array, which is used in a 28 GHz video relay system. Operating in millimeter wave frequency range, the discontinuities in the circuit result in serious circuit parasitic effects, so we must design and simulate with a full wave EM software (HFSS). Also, due to the short wavelength and delicate fabrication, a good analysis and design technique is necessary to achieve the desired performance. The measured results of return loss and radiation pattern simultaneously show good agreements with the single patch antenna and antenna array design.