← 返回 JSSC 论文列表JSSC 2008第6期RF & Wireless0.18μmNeural Network Accelerator
A CMOS Ku-Band 4x Subharmonic Mixer Brad R. Jackson , Student Member , IEEE, and Carlos E. Saavedra , Senior Member , IEEE
本文介绍了一种采用CMOS 0.18μm技术的Ku波段4次谐波混频器设计
转换增益6dB, 1dB压缩点12dBm, IIP3 2dBm, IIP2 17dBm
Ku波段四次谐波混频器CMOSGilbert-cell八相位LO
▸采用改进的Gilbert-cell拓扑结构
▸使用八相位LO开关晶体管实现四次谐波混频
▸集成有源巴伦和八相位LO信号生成电路
Abstract
In this work, the design and measurement of a new 4x subharmonic mixer circuit is presented using CMOS 0.18 m technology. With an RF input signal at 12.1 GHz, and an LO signal at 3.0 GHz, an intermediate frequency of 100 MHz is produced /40 /73/70/61 /82/70 /52 /76/79/41. The mixer uses a modified Gilbert-cell topology with octet-phase LO switching transistors to perform the quadruple subharmonic mixing. Included in the design is an active balun for the RF signal and a circuit that generates an octet-phase LO signals from a differential input. The mixer has a conversion gain of approximately 6 dB, 1-dB compression point of 12 dBm, IIP3 of 2 dBm, and IIP2 of 17 dBm. The circuit also exhibits excellent isolation between its ports (e.g. LO-RF: 71 dB, 4LO-RF: 59 dB).