Design of Variable Delay Elements for Ultra-Wideband Beam-forming

摘要：

　　A variable true-time delay(TTD)circuit operating in ultra-wideband(UWB)systems is presented.The delay element based on the RC filter employs operational transconductance amplifier(OTA)which includes current mirrors in order to realize variations of the group delay.Using Taylor approximation,combining the low-pass filter and highpass filter,flatter gain and group delay are obtained in UWB.The true time delay line operates in the 3.1–10.6 GHz UWB range,and the simulation results achieve the maximum group delay of 40 ps and continuously variable delay.The circuit is implemented in a 0.13μm SiGe BiCMOS process,the true-time delay circuit occupies an active area of 0.4125mm2 and consumes 74.7 mW from a 3.3 V supply.

关键词： RC filters delay circuits Taylor approximation true-time delay (TTD) ultra-wideband (UWB)

作者: Li Wenyuan Wang Yanqing Chen Yang

作者单位: Institute of RF-&OE-ICs,Southeast University,Nanjing,210096,China Institute of RF-&OE-ICs,Southeast University,Nanjing,210096,China;School of Microelectronics,Southea

会议类型: 国际会议

会议名称: 2017 IEEE 2nd Advanced Information Technology,Electronic and Automation Control Conference(IAEAC 2017)(2017 IEEE 第2届先进信息技术、电子与自动化控制国际会议)

会议地点: 重庆

会议语种:英文

页码: 559-562

在线出版日期: 2017-03-25（万方平台首次上网日期，不代表论文的发表时间）