A 12-b 16-GS/s RF-Sampling Capacitive DAC for Multi-Band Soft Radio Base-Station Applications With On-Chip Transmission-Line Matching Network in 16-nm FinFET

被引:7
|
作者
Gruber, Daniel [1 ]
Clara, Martin [2 ]
Perez, Ramon Sanchez [3 ]
Wang, Yu-Shan [4 ]
Duller, Christoph [1 ]
Rauter, Gerald [1 ]
Torta, Patrick [1 ]
Knoblinger, Gerhard [1 ]
Azadet, Kamran [2 ]
机构
[1] Intel Austria GmbH, A-9524 Villach, Austria
[2] Intel Corp, Santa Clara, CA 95054 USA
[3] Intel Corp, Madrid 28020, Spain
[4] Intel Corp, Hillsboro, OR 97124 USA
关键词
Computer architecture; Voltage; Microprocessors; Radio frequency; Linearity; Capacitors; Power dissipation; Capacitive D; A converter (CDAC); digital pre-distortion (DPD); direct RF-sampling; segment mismatch correction (SMC); soft radio; transmission-line transformer (TLT); DIGITAL PREDISTORTION; ADC;
D O I
10.1109/JSSC.2021.3109489
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A 16-GS/s single 1.2-V supply direct RF-sampling capacitive D/A converter for soft radio base-station applications is implemented in a 16-nm FinFET technology. Due to co-integration with a wideband on-chip matching network, the D/A converter (DAC) is capable of signal synthesis between 600 MHz and 8 GHz, with a measured peak RF output power of +5.6 dBm. The linearity required by cellular base-station applications is achieved by employing several analog-domain linearization techniques, yielding a two-tone intermodulation distortion of better than -70 dBc up to the first Nyquist frequency. When transmitting a true multiband signal covering an instantaneous bandwidth of 1 GHz, an adjacent channel leakage ratio (ACLR) of better than -69 dBc is achieved. Digital segment mismatch correction is shown to improve the linearity of a segmented DAC in deep digital backoff operation. A full-rate digital pre-distortion (DPD) method with efficient model identification is experimentally demonstrated. Using DPD, the design achieves an spurious free dynamic range (SFDR) of better than 72 dBc over the entire 0.6-6-GHz frequency range.
引用
收藏
页码:3655 / 3667
页数:13
相关论文
共 1 条
  • [1] A 12b 16GS/s RF-Sampling Capacitive DAC for Multi-Band Soft-Radio Base-Station Applications with On-Chip Transmission-Line Matching Network in 16nm FinFET
    Gruber, Daniel
    Clara, Martin
    Sanchez, Ramon
    Wang, Yu-shan
    Duller, Christoph
    Rauter, Gerald
    Torta, Patrick
    Azadet, Kamran
    2021 IEEE INTERNATIONAL SOLID-STATE CIRCUITS CONFERENCE (ISSCC), 2021, 64 : 174 - +