基于自振混频的下变频接收电路设计

Design of a Down-conversion Receive Circuit Based onSelf-oscillation Mixing

文中设计了一种基于自振混频(SOM)电路的小型化、低成本下变频接收电路。自振混频电路是基于辅助源电路进行仿真分析与设计,以单器件场效应管(FET)实现了变频接收电路中变频与本振两种功能的电路。设计中还将不同种类的功能电路通过垂直压叠的方式实现层间互联,进一步提高了系统集成度。文中提出了基于自振混频的功能电路集成和基于分离器件层间填埋的结构集成相结合的设计方法,最终在58 mm×20 mm×2.9 mm的空间内实现了融天线为一体的小型化、低成本、低功耗的下变频接收通道,变频增益-4~-8 d B,整体功耗<0.13 W。

In this paper,a miniaturized and low-cost down-conversion receive circuit based on self-oscillation mixing(SOM)is designed.The self-oscillation mixing circuit mainly adopts the auxiliary source circuit for simulation analysis and design,and uses the single device field-effect tube(FET)to realize two functions of frequency conversion and local vibration in frequency conversion receiving circuit.In the design,different kinds of functional circuits are connected through vertical stacking to improve the integration of system.A design method combining functional circuit integration based on self-oscilla-tion mixing and structural integration based on interlayer filling of separated devices is proposed in this paper.Finally,a down-conversion receive circuit with antenna integrated in a compact,low cost and low power is realized in the space volume of 58 mm×20 mm×2.9 mm.The conversion gain is from-4 dB to-8 dB and the power consumption is 0.13 W.