为了满足低成本无线终端的需要,已利用CMOS技术开发出许多单芯片RF接收机。但在干扰很强烈的情况下,RF接收机前端的三阶非线性产生出三阶交调信号,它可能与所想要的信号重叠。香港应用科学与技术研究所和香港科技大学的研究人员推出一项产生和引入低频二阶交调信号以抑制上述三 In order to meet the needs of low-cost wireless terminals, a number of single-chip RF receivers have been developed using CMOS technology. But in the case of strong interference, the third-order nonlinearity at the front of the RF receiver produces a third-order intermodulation signal, which may overlap with the desired signal. Researchers at the Hong Kong Institute of Applied Science and Technology and the Hong Kong University of Science and Technology have introduced a method of generating and introducing low frequency second order intermodulation signals to suppress the above three