用于DRM/DAB接收机的高线性第二中频CMOS混频器

2015 IEEE International Conference on Communication Software and Networks (ICCSN) Pub Date : 2015-06-06 DOI:10.1109/ICCSN.2015.7296127

Jian Xu, Bo Peng, Zhigong Wang, Jianping Chen

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引用次数: 1

摘要

设计了一种基于Gilbert单元的有源CMOS混频器，用于DRM/DAB接收机的二次中频转换。采用差分多栅极晶体管(DMGTR)结合动态电流注入技术分别提高了噪声和线性度。采用SMIC0.18μm RF CMOS工艺对设计进行了验证。仿真结果表明，DRM和DAB标准下的电压对话增益分别为7.2dB和7.12dB, NF分别为12.8dB和12.28dB, IIP3分别为18.05dBm和19.62dBm。功耗5.9mW，供电电压1.8V。它在DRM/DAB接收机中第二中频混频器的增益、噪声和线性度之间表现出良好的折衷。

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High linearity 2nd IF CMOS mixer for DRM/DAB receiver

An active CMOS mixer based on Gilbert cell was designed for the 2nd IF conversion in DRM/DAB receiver. Differential multiple gate transistors (DMGTR) combined with dynamic current injection technique was adopted to improve the noise and linearity performance respectively. The design was verified with SMIC0.18μm RF CMOS process. The simulated results show that the voltage conversation gain is 7.2dB and 7.12dB, the NF is 12.8dB and 12.28dB, the IIP3 is 18.05dBm and 19.62dBm for the DRM and DAB standards respectively. The power consumption is 5.9mW with a supply voltage of 1.8V. It exhibits a good compromise between the gain, noise and linearity for the 2nd IF mixer in DRM/DAB receivers.

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来源期刊

2015 IEEE International Conference on Communication Software and Networks (ICCSN)

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