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2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)最新文献

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An F-Band Power Amplifier with Skip-Layer Via Achieving 23.8% PAE in FinFET Technology 在FinFET技术中实现23.8% PAE的跨层f波段功率放大器
2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2022-06-19 DOI: 10.1109/RFIC54546.2022.9863118
Q. Yu, Jeffrey Garrett, Seahee Hwangbo, G. Dogiamis, S. Rami
{"title":"An F-Band Power Amplifier with Skip-Layer Via Achieving 23.8% PAE in FinFET Technology","authors":"Q. Yu, Jeffrey Garrett, Seahee Hwangbo, G. Dogiamis, S. Rami","doi":"10.1109/RFIC54546.2022.9863118","DOIUrl":"https://doi.org/10.1109/RFIC54546.2022.9863118","url":null,"abstract":"This paper presents an F-band power amplifier (PA) designed using novel back-end-of-line (BEOL) in Intel 16 technology. In the PA transistor array, skip-layer vias which directly connect transistor to thick metal layers are used to reduce parasitics from BEOL and improve the PA performance. This 2-stage PA shows excellent peak PAE and gain per stage. At 110GHz, the measured $mathrm{P}_{text{sat}}$, peak PAE, linear power gain, and OP1dB are 11.8dBm, 23.8%, 17.1dB, and 9.2dBm, respectively. The core area of the PA is 0.023mm2, enabling compact integration into phased array or waveguide based transceivers. To the authors' knowledge, this is the first circuit demonstration using skip-layer via that operates beyond 100GHz.","PeriodicalId":415294,"journal":{"name":"2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125370582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A 5G 65-nm PD-SOI CMOS 23.2-to-28.8 GHz Low-Jitter Quadrature-Coupled Injection-Locked Digitally-Controlled Oscillator 5G 65nm PD-SOI CMOS 23.2 ~ 28.8 GHz低抖动正交耦合注入锁定数字控制振荡器
2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2022-06-19 DOI: 10.1109/RFIC54546.2022.9863081
Romane Dumont, M. De matos, A. Cathelin, Y. Deval
{"title":"A 5G 65-nm PD-SOI CMOS 23.2-to-28.8 GHz Low-Jitter Quadrature-Coupled Injection-Locked Digitally-Controlled Oscillator","authors":"Romane Dumont, M. De matos, A. Cathelin, Y. Deval","doi":"10.1109/RFIC54546.2022.9863081","DOIUrl":"https://doi.org/10.1109/RFIC54546.2022.9863081","url":null,"abstract":"A low-phase-noise mm-W low-power quadrature differentially injection-locked digitally-controlled oscillator (QILDCO) is presented. This work adopts a differential injection to enable a trade-off between phase noise performance and power consumption. Switched-capacitor banks and active devices are integrated inside the inductor loop to reduce the active area. The total active area is 0.109 mm2 including harmonic extractors and buffers (excluding I/O pads). The proposed oscillator is supporting two 5G mm-W bands below 30 GHz with a tuning range of 21.3%. The prototype has been implemented in 65-nm Partially-Depleted SOI (PD-SOI) CMOS process. It achieves best state-of-the-art jitter of 25.6 fs while consuming 22 mW from a 1 V supply voltage.","PeriodicalId":415294,"journal":{"name":"2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116710071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
28 GHz Compact LNAs with 1.9 dB NF Using Folded Three-Coil Transformer and Dual-Feedforward Techniques in 65nm CMOS 采用折叠三圈变压器和65nm CMOS双前馈技术的28ghz紧凑LNAs，具有1.9 dB NF
2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2022-06-19 DOI: 10.1109/RFIC54546.2022.9863182
Xiangrong Huang, Haikun Jia, W. Deng, Zhihua Wang, B. Chi
{"title":"28 GHz Compact LNAs with 1.9 dB NF Using Folded Three-Coil Transformer and Dual-Feedforward Techniques in 65nm CMOS","authors":"Xiangrong Huang, Haikun Jia, W. Deng, Zhihua Wang, B. Chi","doi":"10.1109/RFIC54546.2022.9863182","DOIUrl":"https://doi.org/10.1109/RFIC54546.2022.9863182","url":null,"abstract":"This article presents two Ka-band low-noise amplifiers (LNA) for millimeter-wave (mm-wave) phased-arrays. The folded three-coil transformer and EM dual-feedforward techniques are proposed to improve the LNA's noise performance and reduce the chip area. The first two-stage single-ended LNA, consisting of a common-gate (CG) input stage and a common-source (CS) output stage, achieves 1.9 dB minimum noise figure (NF), 16.7 dB peak gain, 4.3 GHz 3-dB bandwidth (BW) from 25.6 to 29.9 GHz, and -12 dBm input 1-dB gain-compression-point (IP1dB) with 13.2 mW Pdc. The second LNA employs the current-reuse topology, which reduces the power consumption to 3.6 mW at the cost of a 0.6 dB NF degradation. The proposed LNAs have been fabricated in 65nm CMOS process. The two LNAs have the same 200 µm × 300 µm core chip area.","PeriodicalId":415294,"journal":{"name":"2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132677510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Sub- THz Switch-less Reconfigurable Triple-/Push-push Dual-band VCO for 6G Communication 用于6G通信的亚太赫兹无开关可重构三/推-推双频压控振荡器
2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2022-06-19 DOI: 10.1109/RFIC54546.2022.9863159
Seongwoog Oh, Jinhyun Kim, Jungsuek Oh
{"title":"Sub- THz Switch-less Reconfigurable Triple-/Push-push Dual-band VCO for 6G Communication","authors":"Seongwoog Oh, Jinhyun Kim, Jungsuek Oh","doi":"10.1109/RFIC54546.2022.9863159","DOIUrl":"https://doi.org/10.1109/RFIC54546.2022.9863159","url":null,"abstract":"This work presents a novel switch-less reconfigurable triple-/push-push dual-band VCO topology and design methods for a W-band metal-oxide-semiconductor (CMOS) voltage-controlled oscillator (VCO). A clover-shaped inductor with a three-port connection and single frequency multiplied output port configuration provides switch-less mode changes between triple-push and push-push operation. This topology is demonstrated in a W-band VCO by controlling three cores with a measured phase noise of −109.17 dBc/Hz at a 10-MHz offset of a 105.3 GHz carrier. The measured center frequency of each band is 91.04 GHz and 102.33 GHz with a tuning range of 10.4% and 14.1 %, respectively. The proposed VCO with independent core on/off state control enables low parasitic switch-less frequency band shift resulting in a superior tuning range compared to those of conventional dual-/single-band VCOs. The effectiveness of this approach is demonstrated through fabrication in a 28-nm CMOS process, with the best FOMT being −174.4 dBc/Hz in this case.","PeriodicalId":415294,"journal":{"name":"2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133768570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A Capacitor Assisting Triple-Winding Transformer Low-Noise Amplifier with 0.8-1.5dB NF $6-12text{GHz BW} pm 0.75text{dB}$ Ripple in 130nm SOI CMOS 电容辅助三绕组变压器低噪声放大器0.8-1.5dB NF $6-12text{GHz BW} pm 0.75text{dB}$纹波
2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2022-06-19 DOI: 10.1109/RFIC54546.2022.9862955
T. Zou, Hao Xu, Yizhuo Wang, Weitian Liu, T. Han, Zengqi Wang, Nan Li, Mi Tian, Weiqiang Zhu, Na Yan
{"title":"A Capacitor Assisting Triple-Winding Transformer Low-Noise Amplifier with 0.8-1.5dB NF $6-12text{GHz BW} pm 0.75text{dB}$ Ripple in 130nm SOI CMOS","authors":"T. Zou, Hao Xu, Yizhuo Wang, Weitian Liu, T. Han, Zengqi Wang, Nan Li, Mi Tian, Weiqiang Zhu, Na Yan","doi":"10.1109/RFIC54546.2022.9862955","DOIUrl":"https://doi.org/10.1109/RFIC54546.2022.9862955","url":null,"abstract":"This paper presents a novel capacitor assisting triple-winding transformer (CTTF) low noise amplifier (LNA) with ultra-low noise figure (NF) and a flat passband gain in 130nm SOI CMOS process. The assisting capacitor in the triple-winding transformer expands the design space by enabling independent control of the coupling strength between each two inductors. The negative resistor enhanced by the assisting capacitor boosts the transformer gain that not only suppresses the noise from the second stage, but also leads to a wider passband by compensating the gain droop from the active transistors. Through two-stage simultaneous noise and power matching, the LNA provides a remarkable 0.8-1.5 dB NF, <−14dB S11, <−8dB S22, −11.8dBm IP1dB and 21.8-23.3dB power gain across the 6-12GHz passband with ±0.75dB ripple while drawing 20mA from a 3.3V supply. It reports the lowest NF so far.","PeriodicalId":415294,"journal":{"name":"2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127455896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An 11 GS/s 2×10b 20–26 GHz Modulator using Segmented Non-Linear RF-DACs and Non-Overlapping LO signals 采用分段非线性rf - dac和无重叠LO信号的11gs /s 2×10b 20 - 26ghz调制器
2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2022-06-19 DOI: 10.1109/RFIC54546.2022.9863143
Victor Åberg, C. Fager, R. Hou, L. Svensson
{"title":"An 11 GS/s 2×10b 20–26 GHz Modulator using Segmented Non-Linear RF-DACs and Non-Overlapping LO signals","authors":"Victor Åberg, C. Fager, R. Hou, L. Svensson","doi":"10.1109/RFIC54546.2022.9863143","DOIUrl":"https://doi.org/10.1109/RFIC54546.2022.9863143","url":null,"abstract":"We present a Cartesian I/Q modulator based on dual 10-bit RF-DACs. Non-overlapping LO signals and a segmented RF - DAC architecture with scaled bit currents contribute to good linearity and allow low-complexity DPD. Unit-cell flip-flops with a balanced clock distribution enable a high sample rate. Drive slope control for data switches reduce out-of-band emissions. Implemented in 22 nm FDSOI CMOS, the modulator operates up to 26 GHz with a maximum sample rate of 11 GS/s. The modulator is used to demonstrate transmission of a 64QAM signal at 13.2 Gb/s, a 256QAM signal at 7.33 Gb/s, and an OFDM signal comprising four aggregated 400-MHz 64QAM channels at an EVM of 6.43 %. The results demonstrate the potential of the proposed modulator architecture for realization of ultra wideband transmitters for high performance mm-wave systems.","PeriodicalId":415294,"journal":{"name":"2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127518732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A 915MHz $19mu mathrm{W}$ Blocker-Enhanced Wake-Up Receiver with Frequency-Hopping Two-Tone Modulation Achieving 53dB Tolerance to In-Band Interference 一种915MHz $19mu maththrm {W}$ blocker增强带跳频双音调制唤醒接收机，可实现53dB带内干扰容限
2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2022-06-19 DOI: 10.1109/RFIC54546.2022.9863142
Heyu Ren, D. Ye, Binbin Chen, Xu Jin, Wenjun Gong, Rongjin Xu, C. R. Shi
{"title":"A 915MHz $19mu mathrm{W}$ Blocker-Enhanced Wake-Up Receiver with Frequency-Hopping Two-Tone Modulation Achieving 53dB Tolerance to In-Band Interference","authors":"Heyu Ren, D. Ye, Binbin Chen, Xu Jin, Wenjun Gong, Rongjin Xu, C. R. Shi","doi":"10.1109/RFIC54546.2022.9863142","DOIUrl":"https://doi.org/10.1109/RFIC54546.2022.9863142","url":null,"abstract":"A 915MHz ultra-low-power blocker-enhanced wake- up receiver (BE-WuRx) is presented in a 65nm CMOS process. Employing the proposed frequency-hopping two-tone modulation (FH-TTM), the BE-WuRx can dynamically convert the in-band blocker power to data power, and achieves a −63.6dBm sensitivity without blocker and a −90dBm enhanced sensitivity with a −25dBm CW interferer, while just consuming $mathbf{19}mathbf{mu}mathbf{W}$. With the −63.6dBm sensitivity, the BE-WuRx performs 53dB tolerance to the in-band blocker, exhibiting 14dB improvement compared to the case that FH- TTM is off. The wake-up latency is 6.4ms for a quiet channel and 6.4 to 64ms for a congested channel.","PeriodicalId":415294,"journal":{"name":"2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127537644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Linear High-Power Reconfigurable SOI-CMOS Front-End Module for WI-FI 6/6E Applications 用于WI-FI 6/6E应用的线性高功率可重构SOI-CMOS前端模块
2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2022-06-19 DOI: 10.1109/RFIC54546.2022.9863085
D. Parat, A. Serhan, P. Reynier, R. Mourot, A. Giry
{"title":"A Linear High-Power Reconfigurable SOI-CMOS Front-End Module for WI-FI 6/6E Applications","authors":"D. Parat, A. Serhan, P. Reynier, R. Mourot, A. Giry","doi":"10.1109/RFIC54546.2022.9863085","DOIUrl":"https://doi.org/10.1109/RFIC54546.2022.9863085","url":null,"abstract":"This paper presents a high-power monolithic SOI-CMOS Front End-Module (FEM) supporting Wi-Fi 6/6E signals at 2.4GHz. The FEM includes an SP4T antenna switch, a power amplifier (PA), a low noise amplifier (LNA) with bypass mode, and a digital controller. The RX path achieves 15dB of power gain with less than 1.8dB of noise figure (NF) with 10mW of power consumption. The TX path delivers 33.4dBm of saturated output power $(mathrm{P}_{text{sat}})$ with 51.7% of peak PAE and 28.5dB of power gain. Without DPD, the reconfigurable TX path achieves state-of-the art performance with 23.4/20dBm of linear output power $(mathrm{P}_{text{out}})$ for an EVM of −35.1/−43.9dB and an operating current of 282/254mA for 802.11ac/ax MCS9/MCS11 40MHz signals.","PeriodicalId":415294,"journal":{"name":"2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","volume":"22 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125781117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A 56.32 Gb/s 16-QAM D-band Wireless Link using RX-TX Systems- in-Package with Integrated Multi-LO Generators in 45nm RFSOI 在45nm RFSOI中使用RX-TX系统封装集成多lo发生器的56.32 Gb/s 16 qam d波段无线链路
2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2022-06-19 DOI: 10.1109/RFIC54546.2022.9863127
A. Hamani, F. F. Manzillo, A. Siligaris, N. Cassiau, F. Hameau, F. Chaix, C. Dehos, A. Clemente, J. González-Jiménez
{"title":"A 56.32 Gb/s 16-QAM D-band Wireless Link using RX-TX Systems- in-Package with Integrated Multi-LO Generators in 45nm RFSOI","authors":"A. Hamani, F. F. Manzillo, A. Siligaris, N. Cassiau, F. Hameau, F. Chaix, C. Dehos, A. Clemente, J. González-Jiménez","doi":"10.1109/RFIC54546.2022.9863127","DOIUrl":"https://doi.org/10.1109/RFIC54546.2022.9863127","url":null,"abstract":"This paper presents an energy-efficient wideband D- band wireless link using receiver (RX) and transmitter (TX) modules based on a channel-bonding scheme. The modules include RX and TX integrated circuits (ICs) fabricated in 45nm CMOS RFSOI technology. They are mounted on low-cost multi-layer printed circuit boards (PCBs) and connected to patch antennas. The RX and TX ICs are composed of two down-conversion and up-conversion chains, respectively, operating over contiguous sub- bands around 147.96 GHz. The required multiple millimeter-wave local oscillator signals (LOs)are generated on-chip. The presented wireless system achieves a data rate of 56.32 Gb/s by using 16 QAM modulation over 8 radiofrequency (RF) channels, with a competitive energy consumption (RX+TX) of 18 pJ/bit, including the LOs generation circuitry.","PeriodicalId":415294,"journal":{"name":"2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129647901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A Sub- THz CMOS Molecular Clock with 20 ppt Stability at 10,000 s Based on Dual-Loop Spectroscopic Detection and Digital Frequency Error Integration 基于双环光谱检测和数字频率误差集成的亚太赫兹CMOS分子钟10000 s稳定性为20ppt
2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2022-06-19 DOI: 10.1109/RFIC54546.2022.9863147
Mina Kim, Cheng Wang, L. Yi, Hae-Seung Lee, R. Han
{"title":"A Sub- THz CMOS Molecular Clock with 20 ppt Stability at 10,000 s Based on Dual-Loop Spectroscopic Detection and Digital Frequency Error Integration","authors":"Mina Kim, Cheng Wang, L. Yi, Hae-Seung Lee, R. Han","doi":"10.1109/RFIC54546.2022.9863147","DOIUrl":"https://doi.org/10.1109/RFIC54546.2022.9863147","url":null,"abstract":"This paper presents a dual-loop chip-scale molecular clock (CSMC), which enhances the Allan Deviation performance by combining high signal-to-noise ratio of using fundamental mode and long-term stability of using higher order modes in derivative molecular absorption spectroscopy. In addition, digital frequency-error integration is adopted in the frequency-locked loop to provide an infinite open-loop DC gain, which fully suppresses any frequency drift caused by the temperature-sensitive crystal oscillator. This new generation CSMC is implemented in 65-nm CMOS, and achieves 20 ppt (part-per-trillion) Allan Deviation at 10,000 s averaging time with 71-mW power consumption.","PeriodicalId":415294,"journal":{"name":"2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125298394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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