开关控制LC振荡电路脉冲发射方法

›› 2015, Vol. 28 ›› Issue (7): 18-.

开关控制LC振荡电路脉冲发射方法

郭利生,王薪,何金梅

(南京航空航天大学电子信息工程学院,江苏南京 210016)

出版日期:2015-07-15 发布日期:2015-07-13
作者简介:郭利生(1989—),男,硕士研究生。研究方向:射频电路与系统设计。E-mail:shenglg0408@126.com
基金资助:
国家自然科学基金资助项目(61102032);中国博士后科学基金资助(20110491423;2012T50496)

Pulse Generation and Radiation Based on On-off LC Oscillators and Electrically Small Antennas

GUO Lisheng,WANG Xin,HE Jinmei

(College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

Online:2015-07-15 Published:2015-07-13

摘要/Abstract

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%。

关键词: 脉冲发射, LC振荡电路, 电小天线

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.

Key words: pulse transmission;LC oscillator;electrically small antenna

中图分类号:

TN830.4

郭利生,王薪,何金梅. 开关控制LC振荡电路脉冲发射方法[J]. , 2015, 28(7): 18-.

GUO Lisheng,WANG Xin,HE Jinmei. Pulse Generation and Radiation Based on On-off LC Oscillators and Electrically Small Antennas[J]. , 2015, 28(7): 18-.