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您的检索式：作者名="Jicong Chen"
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| 1 | A 20.8-Gbps Dual-Carrier Wireless Communication Link in 220-GHz Band显示文摘With the successful demonstration of terahertz(THz)high-speed wireless data transmission,the THz frequencies are now becoming a worth candidate for post-5G wireless communications.On the other hand,to bring THz communications a step closer to real scenario application,solving high data rate realtime transmission is also an important issue.This paper describes a 220-GHz solid-state dual-carrier wireless link whose maximum transmission real-time data rates are 20.8 Gbps(10.4 Gbps per channel).By aggregating two carrier signals in the THz band,the contradiction between high real-time data rate communication and low sampling rate analog-to-digital(ADC)and digital-to-analog converter(DAC)is alleviated.The transmitting and receiving front-ends consist of 220-GHz diplexers,220-GHz sub-harmonic mixers based on anti-parallel Schottky barrier diodes,G-band low-noise amplifiers(LNA),WR-4.3 band high-gain Cassegrain antennas,high data rates dual-DAC and-ADC baseband platform and other components.The low-density parity-check(LDPC)encoding is also realized to improve the bit error rate(BER)of the received signal.Modulated signals are centered at 214.4 GHz and 220.6 GHz with-11.9 dBm and-13.4 dBm output power for channel 1 and 2,respectively.This link is demonstrated to achieve 20.8-Gbps real-time data transmission using 16-QAM modulation over a distance of 1030 m.The measured signal to noise ratio(SNR)is 17.3 dB and 16.5 dB,the corresponding BER is 8.6e-7 and 3.8e-7,respectively.Furthermore,4K video transmission is also carried out which is clear and free of stutter.The successful transmission of aggregated channels in this wireless link shows the great potential of THz communication for future wireless high-rate real-time data transmission applications. | Yinian Feng Bo Zhang Chen Zhi Ke Liu Weilong Liu Fang Shen Chuanqi Qiao Jicong Zhang Yong Fan Xiaobo Yang | 2021 | China Communications2021，18，5： | 2 |
| 2 | Oral delivery of superoxide dismutase by lipid polymer hybrid nanoparticles for the treatment of ulcerative colitis显示文摘Protein-based drugs have received extensive attention in the field of drug research in recent years.However,protein-based drug activity is difficult to maintain during oral delivery,which limits its application.This study developed bifunctional oral lipid polymer hybrid nanoparticles(R8-PEG-PPNPs)that deliver superoxide dismutase(SOD)for the treatment of ulcerative colitis(UC).R8-PEG-PPNPs was composed of PCADK,PLGA,lecithin,and co-modified with stearic acid-octa-arginine and polyethylene glycol.The nanoparticles(NPs)are uniformly dispersed with a complete spherical structure.In vitro stability and release studies showed that R8-PEG-PPNPs exhibited good stability and protection.In vitro cell culture experiments demonstrated that R8-PEG-PPNPs as carriers have no significant toxic effects on cells at concentration below 1000µg/mL and promote cellular uptake.In experiments with ulcerative colitis mice,R8-PEG-PPNPs were able to enhance drug absorption by intestinal epithelial cells and accumulate effectively at the site of inflammation.Its therapeutic effect further demonstrates that R8-PEG-PPNPs are a promising delivery system for oral delivery of protein-based drugs. | Yaxin Cui Tianyu Zhu Xueyan Zhang Jicong Chen Fengying Sun Youxin Li Lesheng Teng | 2022 | Chinese Chemical Letters2022，33，10： | 1 |
| 3 | Reliability testing of a 3D encapsulated VHF MEMS resonator显示文摘The frequency stability of a three-dimensional(3D) vacuum encapsulated very high frequency(VHF)disk resonator is systematically investigated. For eliminating the parasitic effect caused by the parasitic capacitance of the printed circuit board(PCB), a negating capacitive compensation method was developed. The testing results implemented at 25 ℃ for 240 h for the long-term stability indicates that the resonant frequency variation remained within ±1 ppm and the noise floor derived from Allan Deviation was 26 ppb, which is competitive with the conventional quartz resonators. The resonant frequency fluctuation of 1.5 ppm was obtained during 200 temperature cycling between -40 and 85 ℃. | Fengxiang Wang Quan Yuan Xiao Kan Jicong Zhao Zeji Chen Jinling Yang Fuhua Yang | 2018 | Journal of Semiconductors2018，39，10： | 0 |
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