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首页> 外文期刊>Analog Integrated Circuits and Signal Processing >Design and analysis of a low-noise saw-less receiver front-end resistant to strong out-of-band blocker
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Design and analysis of a low-noise saw-less receiver front-end resistant to strong out-of-band blocker

机译:低噪声锯的接收器前端对强带外阻滞剂的设计和分析

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Design and analysis of a SAW-less front-end resistant to strong out-of-band blocker is presented which utilizes a main-path containing an LNA along with a 12.5% mixer and a baseband amplifier. Also, it employs an auxiliary-path using a 12.5% mixer and a baseband amplifier. Multiple N-path filtering technique is employed to improve the NF and gain of the front-end in the presence of strong out-of-band blocker. The linearity of LNA, enhanced by series resistors in the LNA inputs, is analyzed by Volterra series analysis. Using noise cancellation technique on this structure relaxes the concern of series resistor noise contribution. Furthermore, new analyses are given for N-pathswitching clock non-idealities, considering overlap and its effect on input matching. Analysis and simulation results, using 0.18 mu m CMOS technology, show about 6 and 5 dB improvement in LNA IIP3 and front-end NF, respectively, when series resistor is added to the LNA and the auxiliarypath is ON.
机译:提出了对强带外阻滞剂的锯下前端耐止骨前端的设计和分析,其利用含有LNA的主路径以及12.5%混合器和基带放大器。 此外,它使用12.5%混频器和基带放大器使用辅助路径。 采用多个N路滤波技术来改善强带外阻挡剂的存在的NF和前端的增益。 通过Volterra系列分析分析了LNA输入中的串联电阻增强的LNA的线性度。 使用噪声消除技术在这种结构上放松了串联电阻噪声贡献的关注。 此外,考虑重叠及其对输入匹配的影响,给出了新分析。 分析和仿真结果,使用0.18μmCCOS技术,分别显示LNA IIP3和前端NF的约6和5 dB的改善,当加入到LNA中时,AxiLiryPath正在接通。

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