脈沖波形對其軸線能量傳播特性影響的研究
The study of axial energy decaying property influenced by pulse waveform
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摘要: 在相同平面圓形輻射器條件下，對具有相同中心頻率的幾種典型脈沖，根據(jù)電磁場理論，給出了它們軸線能量傳播特性的解析計算公式和數(shù)字模擬結(jié)果。研究表明：當(dāng)脈沖的上升時間小于有效脈沖寬度的1/20時，在脈沖傳播的慢衰減區(qū)，等腰梯形脈沖的傳播特性優(yōu)于目前普遍應(yīng)用的正弦脈沖。
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關(guān)鍵詞:
- 脈沖波形; 傳播特性; 中心頻率
Abstract: With same circular radiating antenna, same center frequency pulse, the analytical and numerical results of axial energy of several typical waveform pulse are offered by electromagnetic theory. The results indicate: in the slow decaying area, the axial energy decaying property of isosceles trapezium electromagnetic wave pulse is better than that of sinusoidal electromagnetic waveform while its increasing time is shorter than one twentieth of the waveform width. -
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