An Interference-Resilient Wideband Mixer-First Receiver With LO Leakage Suppression and I/Q Correlated Orthogonal Calibration

作者：Wu Charles^*; Wang Yanjie^*; Nikolic Borivoje^*; Hull Christopher^*

来源：IEEE Transactions on Microwave Theory and Techniques, 2016, 64(4): 1088-1101.

DOI：10.1109/TMTT.2016.2532867

• Carrier aggregation (CA)
• image folding
• image rejection (IR)
• image rejection ratio (IRR)
• in-phase/quadrature phase correlated orthogonal calibration (I/Q-COC)
• intra-band
• local oscillator (LO) leakage
• long-term evolution (LTE)
• mixer digital-to-analog converter (MxDAC)
• mixer-first receivers (RXs)

A mixer-first receiver design in 28-nm CMOS is discussed. An embedded 5-bit mixer digital-to-analog converter provides wideband tuneability to enhance device matching and, hence, suppress the multiple local oscillator (LO) harmonics as well as to improve the overall image rejection (IR) performance. Two-stage baseband amplifiers support a 50-MHz baseband bandwidth, which covers the entire channel for long-term evolution non-contiguous carrier aggregation. The proposed design effectively reduce multiple LO harmonics down to below -62 dBm. The system achieves 2.6-dB noise figure, > 15-dBm out-of-band third-order input intercept point, and an IR ratio > 66 dB with 60-mW power, including five on-chip low dropout regulators.

• 出版日期2016-4