一種新型感性有源可變調制相加器
A NEW MODULATION SUMMATOR WITH AN ACTIVE INDUCTIVE VARIABLE LOAD
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摘要: 用負反饋擴展頻帶是目前國內外廣泛采用的、行之有效的辦法。在研制微波調相器的調制相加器時發(fā)現,用本文提出的感性有源可變調制相加器是擴展頻帶的另一有效辦法。就增益帶寬積而論,后者比前者大得多。 本文提出的調制相加器,就帶寬、無失真輸出電壓和對組合波的抑制而言,比美國Motorola公司研制的Goddard跟蹤系統(tǒng)的指標高得多。用流圖理論詳細地分析了它的性能,并得出了一系列有用的公式。理論分析和實驗曲線相當吻合。整個電路比較簡單,并能在40+85℃溫度范圍內穩(wěn)定可靠地工作。
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關鍵詞:
Abstract: Spreading band with negative feedback is a valid method that is presently widely used at home and abroad. From developing the modulation summator of microwave phase modulator, it is found that the modulation summator presented in this paper seems to bp an another valid method of spreading band. The gain-band product of the latter is much larger than that of the former.The new modulation summator preseuted in this paper has a much wider band, higher non-distorted output voltage aud better rejection capability to combined-wave than Goddard tracking system developed by Motorola Co. Its characteristics are analysed in detail with the flow-graph. A series of formulas are derived. It is found that the theoretical analysis agrees well with experimental curve. Its circuits are very simple and work stably within the temperature of 40+85℃. -
J. E. Kirch, The Goddard Range and Range Rete, System for Satellite Tracking, IEEE 10th Annual East Coast Conference on Aerospace and Navigational Electronics, 1963, pp 2. 3. 4-1.[2]S. J. Mason, Proc. IRE, 44(1956), 920. -
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