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浙江大学学报(工学版)  2024, Vol. 58 Issue (10): 2192-2198    DOI: 10.3785/j.issn.1008-973X.2024.10.023
电子与电气工程     
噪声系数最小1.6 dB有高带外抑制的5~6 GHz射频接收前端芯片
傅海鹏(),程志强
天津大学 微电子学院,天津 300072
5-6 GHz RF receiver front-end with 1.6 dB minimum noise figure and high out-of-band suppression
Haipeng FU(),Zhiqiang CHENG
School of Microelectronics, Tianjin University, Tianjin 300072, China
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摘要:

为了满足射频通信前端接收部分对高线性与带外信号抑制能力的要求,基于130 nm 绝缘体上硅工艺设计并实现工作在5~6 GHz的射频接收前端芯片. 该前端芯片由带有旁路和带外抑制功能的低噪声放大器(LNA)、射频开关和带隙基准偏置电路等组成. 基于共源共栅结构的LNA,在输入匹配中使用LC陷波实现带外抑制;在偏置电路中,使用带隙基准电流源对LNA的偏置进行温度补偿,屏蔽电源纹波影响. 对该前端芯片进行流片加工并测试,结果表明,当工作频率为5~6 GHz时,芯片的接收增益为13.4~14.0 dB,输入与输出反射系数均小于?10 dB,频带内的最小噪声系数为1.6 dB,在工作频率内1 dB压缩点的输入功率大于?4 dBm,输入三阶交调点大于+7 dBm. 低噪声放大器在整个工作频段内无条件稳定,在2 V供电电压下电路的直流功耗为30 mW,芯片面积为0.56 mm2.

关键词: 低噪声放大器(LNA)带外抑制绝缘体上硅工艺射频接收前端有源偏置    
Abstract:

To meet the requirements for high linearity and out-of-band signal suppression in the RF communication front-end receiver, an RF receiver front-end operated at 5-6 GHz based on 130 nm SoI technology was proposed. The RF receiver front-end consisted of a low-noise amplifier (LNA) with bypass and out-of-band suppression, an RF switch, and a bandgap reference bias circuit. For a cascode-based LNA, an LC notch filter was used for input matching to achieve out-of-band suppression. In the bias circuit, a bandgap reference current source was used for temperature compensation for the bias of the LNA, thereby shielding the effect of the power supply ripple. The RF receiver front-end was processed and tested. Results showed that within the operating frequency band of 5–6 GHz, the gain of the receiver chip was 13.4?14.0 dB, input and output reflection coefficients were below ?10 dB, the minimum noise figure was 1.6 dB, the input 1 dB compression point was greater than ?4 dBm, and the input third-order intercept point was greater than +7 dBm. The amplifier was unconditionally stable across the entire frequency band. The DC power consumption was 30 mW at 2 V supply voltage, and the chip area was 0.56 mm2.

Key words: low noise amplifier (LNA)    out-of-band suppression    SoI technology    RF receiver front-end    active biasing
收稿日期: 2023-08-12 出版日期: 2024-09-27
CLC:  TN 7  
基金资助: 国家自然科学基金资助项目(62074110);国家重点研发计划资助项目(2018YFB2202500).
作者简介: 傅海鹏(1985—),男,副教授,从事射频芯片研究. orcid.org/0000-0002-9809-1830. E-mail:hpfu@tju.edu.cn
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引用本文:

傅海鹏,程志强. 噪声系数最小1.6 dB有高带外抑制的5~6 GHz射频接收前端芯片[J]. 浙江大学学报(工学版), 2024, 58(10): 2192-2198.

Haipeng FU,Zhiqiang CHENG. 5-6 GHz RF receiver front-end with 1.6 dB minimum noise figure and high out-of-band suppression. Journal of ZheJiang University (Engineering Science), 2024, 58(10): 2192-2198.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2024.10.023        https://www.zjujournals.com/eng/CN/Y2024/V58/I10/2192

图 1  射频接收前端整体框图
图 2  射频开关拓扑
图 3  LNA拓扑与输入匹配小信号模型
图 4  低噪声放大器原理图
图 5  带隙基准电路
图 6  偏置电压在有无温度补偿下的对比
图 7  芯片显微镜照片
图 8  低噪声放大器的散射参数仿真与测试结果
图 9  噪声系数仿真与测试结果
图 10  1 dB压缩点与输入三阶交调点仿真与测试结果
图 11  旁路的散射参数仿真与测试结果
图 12  开关的PA支路散射参数仿真与测试结果
图 13  开关PA支路的1 dB压缩点测试结果
工艺f /GHzGainmax/dBNFmin/dBIP1dB/dBmIIP3/dBmP/mWA/mm2FoM/GHz
180 nm CMOS[21]0.1~2.017.52.9?3.0010.621.30.631.39
180 nm SoI[22]1.010.71.33.0022.050.00.671.34
GaAs pHEMT[23]5.0~6.027.01.3?13.00240.04.291.64
130 nm CMOS[24]5.025.51.9?25.07020.91.260.48
130 nm SoI(本研究)5.0~6.014.01.6?4.007.030.00.564.11
表 1  不同低噪声放大器的性能对比
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