| 开关控制LC振荡电路脉冲发射方法 |
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| 引用本文： | 郭利生,王薪,何金梅.开关控制LC振荡电路脉冲发射方法[J].电子科技,2015,28(7):18. |
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| 作者姓名： | 郭利生 王薪 何金梅 |
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| 作者单位： | (南京航空航天大学 电子信息工程学院,江苏 南京 210016) |
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| 基金项目： | 国家自然科学基金资助项目，中国博士后科学基金资助 |
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| 摘 要： | 运用电小天线的高电抗特性和开关控制LC振荡电路的时域特征,设计了一种脉冲生成和发射方案。设计中电小天线既是脉冲发射端也是脉冲LC振荡的组成单元。LC振荡电路中晶体管的通断状态决定了系统的稳定性状态。外加电压控制晶体管导通时,电路处于振荡状态,在天线馈电端口形成脉冲振荡信号并直接发射至自由空间,从而实现了脉冲生成与发射的一体化设计。仿真结果表明,发射机在1.4 V偏置下可提供辐射天线两端高达6 Vpp的脉冲信号,且发射效率可达到24.3%。
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| 关 键 词： | 脉冲发射 LC振荡电路 电小天线 |
Pulse Generation and Radiation Based on On-off LC Oscillators and Electrically Small Antennas |
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| GUO Lisheng,WANG Xin,HE Jinmei.Pulse Generation and Radiation Based on On-off LC Oscillators and Electrically Small Antennas[J].Electronic Science and Technology,2015,28(7):18. |
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| Authors: | GUO Lisheng WANG Xin HE Jinmei |
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| Affiliation: | (College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | A novel pulse transmission circuit has been proposed based on electrically small antennas and on-off LC oscillator.The electrically small antenna serves no only as the radiating element,but also as part of the LC oscillator.The on-off state of the transistor within the oscillator determines the stability of the system.As the transistor is turned on by an external control voltage,a short-pulse signal is generated.Simulation and measurement results show that a 6 Vpp signal across the electrically small antenna can be obtained under the 1.4 V bias voltage,and a power efficiency of as high as 24.3% can be achieved. |
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| Keywords: | pulse transmission LC oscillator electrically small antenna |
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