当前位置: 首页 » 资料 » 健康论文 » Concerning the maximum frequency limits of Gunn operators

Concerning the maximum frequency limits of Gunn operators

放大字体  缩小字体 更新日期:2018-11-26  浏览次数:3
摘 要:The length of the transit region of a Gunn diode determines the natural frequency at which it operates in fundamental mo
  • 【题 名】Concerning the maximum frequency limits of Gunn operators
  • 【作 者】R F Macpherson G M Dunn Ata Khalid D R S Cumming
  • 【机 构】Department of Physics University of Aberdeen School of Engineering University of Glasgow
  • 【刊 名】《太赫兹科学与电子信息学报》2015年 第3期 389-395页 共7页
  • 【关键词】Gunn DIODE MONTE Carlo THEORETICAL limits GA N
  • 【文 摘】The length of the transit region of a Gunn diode determines the natural frequency at which it operates in fundamental mode-the shorter the device,the higher the frequency of operation.The long-held view on Gunn diode design is that for a functioning device the minimum length of the transit region is about 1.5μm,limiting the devices to fundamental mode operation at frequencies of roughly 60 GHz.The authors posit that this theoretical restriction is a consequence of limits of the hydrodynamic models by which it was determined.Study of these devices by more advanced Monte Carlo techniques,which simulate the ballistic transport and electron-phonon interactions that govern device behaviour,offers a new lower bound of 0.5μm,which is already being approached by the experimental evidence shown in planar and vertical devices exhibiting Gunn operation at 0.6μm and 0.7μm.It is shown that the limits for Gunn domain operation are determined by the device length required for the transferred electron effect to occur(approximately 0.15μm,which as demonstrated is largely field independent)and the fundamental size of the domain(approximately 0.3μm).At this new length,operation in fundamental mode at much higher frequencies becomes possible-the Monte Carlo model used predicts power output at frequencies over 300 GHz.
 
本文导航:
  • (1) Gunn,DIODE,MONTE,Carlo,THEORETICAL,limits,GA,N
  • 下一篇:鳖甲
  • 上一篇:暂无
 
[ 资料搜索 ]  [ 加入收藏 ]  [ 告诉好友 ]  [ 打印本文 ]  [ 关闭窗口 ]

 

 
推荐图文
推荐资料
热门关注