太赫兹科学与电子信息学报, 2018, 16 (6): 1058, 网络出版: 2019-06-10  

一种Ku频段新型宽带幅相可调谐模拟预失真器

A novel balanced wideband amplitude and phase-adjustable analog predistorter for Ku band
作者单位
电子科技大学 极高频复杂系统国防重点学科实验室,四川 成都 611731
摘要
采用模拟预失真技术设计一款Ku波段预失真器,使用2个MA4E2037肖特基势垒二极管和三段无源传输线产生预失真信号,通过调节偏置电压实现幅度和相位可调;同时结合平衡式结构,改善单支路非线性器件增益扩张曲线斜率不足问题,改善输入驻波比。仿真结果表明,在14?GHz处,增益补偿和相位补偿可分别达到17?dB和60°以上;在频率12~16?GHz,增益扩张和相位扩张可达到15?dB和50°以上,整个频带内预失真器S11小于-17?dB。该预失真器适用频带宽,结构简单,功能实用。
Abstract
A Ku band predistorter based on the analog predistortion technology is presented. Two Schottky diodes and three transmission lines are employed to generate pre-distortion signal. The adjustable amplitude and phase are realized by changing the bias voltage. At the same time, the slope of amplitude characteristic together with input Voltage Standing Wave Ratio(VSWR) is improved with the help of the balanced structure. It can be concluded from the simulation results that the predistorter can provide 17?dB gain expansion and 60° phase expansion at 14?GHz. In 12-16?GHz, it provides more than 15?dB gain expansion and 50° phase expansion, and the S11 is below -17?dB. The predistorter bears the advantages of wide band, simple structure and it is practical in use.

吕俊杰, 夏雷. 一种Ku频段新型宽带幅相可调谐模拟预失真器[J]. 太赫兹科学与电子信息学报, 2018, 16(6): 1058. LYU Junjie, XIA Lei. A novel balanced wideband amplitude and phase-adjustable analog predistorter for Ku band[J]. Journal of terahertz science and electronic information technology, 2018, 16(6): 1058.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!