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題名 | 錐面螺旋天線之輻射功率分析= |
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作者 | 柯盟卿; |
期刊 | 明志工專學報 |
出版日期 | 19880500 |
卷期 | 20 1988.05[民77.05] |
頁次 | 頁81-88 |
分類號 | 448.813 |
語文 | chi |
關鍵詞 | 天線; 功率; 輻射; 錐面; 螺旋; |
中文摘要 | 本文在於導出激勵電流波沿錐面上螺旋行進時,所產生的輻射功率之表示式。在此作者據此設計出計算程式,推算出極角各為15°、30°或45°的錐面上,節距分別為2.94mm、2.97mm、8.95mm或11.94mm的螺旋,匝數為5,操作頻率為4GHz時的輻射功率場形,並且發現極角為30°,節距為11.94mm的5匝錐面螺旋,在62.5MHz及125MHz之頻帶內其功率場形具有頻率無關的特性。 |
英文摘要 | In this paper, the radiation power produced by the current waves traveling along the helix on the conical surface has been derived. The author has provided the program to calculate the radiation power pattern at the frequency of 4 GHz for 5-turn helix with the pitch of 2.99mm, 5.97mm, 8.95mm or 11.94mm spreading on the conical surface with polar angle of 15°, 30° or 45° respectively. It also has been found that the helix with 11.94mm pitch, spreading on the conical surface with 30° polar angle has the frequency independent characteristics within 62.5MHz-125MHz frequency band. |
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