基于六端口技术的直接变频接收机被证明是一种适用于可重构、重复编程、多频带、多标准的很有前途的接收机结构。
The aim of this work is to research the six-port theoretical background, and design a Ka-band direct conversion receiver front-end based-on six-port.
接收机采用零中频直接变频方案，电路简化，可有效地降低成本。
The zero IF technology is used in the receiver which can simplify the reader circuit and reduce cost significantly.
基于直接下变频的系统架构，接收机集成了低噪声放大器、I/Q下变频器、去直流偏移滤波器、基带放大器和信道选择滤波器。
Based on a direct-conversion architecture, the receiver integrates LNA, I/Q mixer, DC-offset removal filter, baseband amplifier and channel-select filters on a single chip.
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