并行角饋雙極化微帶天線陣的分析與設(shè)計(jì)
ANALYSIS AND DESIGN OF A DUAL-POLARIZED MICROSTRIP ANTENNA ARRAY WITH PARALLEL CORNER FEEDING
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摘要: 本文提出利用雙端口的并行角饋實(shí)現(xiàn)雙極化天線,并設(shè)計(jì)了一種新的雙極化饋線網(wǎng)絡(luò)。綜合運(yùn)用了多端口網(wǎng)絡(luò)模型、腔模理論、分片法和補(bǔ)片法,給出了各天線單元和雙極化饋線網(wǎng)絡(luò)的理論分析方法。實(shí)際設(shè)計(jì)了一副6GHz頻段的單層共面的四元天線陣,實(shí)測(cè)的雙端口隔離度達(dá)-50dB,其性能明顯優(yōu)越于通常的單層雙極化微帶天線陣列。
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關(guān)鍵詞:
- 微帶天線; 天線陣列; 并行角饋; 雙極化
Abstract: In this paper, parallel corner feeding with two ports is proposed to realize the high isolation, dual-polarized microstrip antenna. A novel dual-polarized feedline network is designed for the array. A method of analysis is developed, which is based on the multiport network model, the cavity theory, the segmentation technique and the desegmentation technique. A one-layer coplanar microstrip antenna array at 6GHz band is designed. The measured isolation between two feeding ports reaches -50dB, which is much better than those of one-layer dual-polarized arrays commonly used. -
James J R, Hall P S, Wood C. Microstrip antenna theory and design, London: Peter Peregrinus Ltd, 1981, 166-167.[2]Tolt L J, Closte J H. Dual polarized linear microstrip patch array, IEEE AP-S Symposium, Blacksburg, VA: June, 1987, 810-813.[3]鐘順時(shí).微帶天線理論與應(yīng)用，西安，西安電子科技大學(xué)出版社，1991, 第一、四章.[4]劉俊.極化捷變有源微帶天線:[碩士論文].上海:上海大學(xué)通信工程系,1998.[5]Murakami Y, et al. Slot-coupled self-duplexing array antenna for mobile satellite communication,[6]IEE Proc. Microwave Ant. Propag, 1996, 143(2): 119-123.[7]Gupta K C. Multiport network modeling approach for computer-aided design of microstrip patches and arrays, IEEE AP-S Symposium, U.S.A: 1987, 786-789.[8]Gupta K C, Garg R, Bahl I J. Microstrip lines and slotlines, Dedham, MA: Artech House, 1979 Chapter 2. -
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