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| 1 | A fully matched N-way Doherty amplifier with optimized linearity 显示文摘 | Youngoo Yang Jeonghyeon Cha Bumjae Shin | 2003 | Microwave Theory and Techniques IEEE Transactions on2003，51，3： | 1 |
| 2 | Op- timum operation of asymmetrical-cells-based linear Doherty power amplifiers-uneven power drive and power matching 显示文摘 | Jangheon Kim Jeonghyeon Cha Ildu Kim | 2005 | IEEE Trans Microw Theory Tech2005，53，3： | 1 |
| 3 | A Microwave Dnherty Amplifier Employing Envelope Tracking Technique for High Efficiency and Linearity显示文摘 | Youngoo Yang Jeonghyeon Cha Bumjae Shin and Bumman Kim | 2003 | IEEE Microwave and Wireless Components Letters2003，13，9： | 1 |
| 4 | Optimum de-sign of a predistortion RF power amplifier for multicarrierWCDMA applications显示文摘 | Cha Jeonghyeon Yi Jaehyok Kim Jangeon | 2004 | IEEE MTT2004，52，2： | 1 |
| 5 | Effects of Preparation Method on Cyclic Stability and CO2 Absorption Capacity of Syn- thetic CaO/MgO Absorbent for Sorption-enhanced Hy- drogen Production 显示文摘 | Jeonghyeon P Kwang B Y | 2012 | International Journal of Hydrogen Energy2012，37，1： | 1 |
| 6 | Optimum Operation of Asymmetrical Ceils Based Linear Doherty Power Amplifiers-Uneven Power Drive and Power Matching 显示文摘 | Kim Jangheon Cha Jeonghyeon Kim Ildu | 2005 | IEEE Transactions on Microwave Theory and Technioues2005，53，5： | 1 |
| 7 | Glycoprotein isolated from Gardenia jasminoides Ellis has a scavenging activity against oxygen radicals and inhibits the oxygen radical-induced protein kinase C alpha and nuclear factor-kappa B in NIH/3T3 cells显示文摘 | Seijung Leea Philsun Oha Jeonghyeon Ko | 2006 | Environmental Toxicology and Pharmacology2006，21，： | 1 |
| 8 | Optimum design of a predistrotion RF power amplifier for multicarrier WCDMA applications显示文摘 | Jeonghyeon Cha Jadhyok Yi Jangheon Kim | 2004 | IEEE Transactions on Microwave Theory and Techinques2004，52，2： | 1 |
| 9 | The Doherty Power Amplifier显示文摘 | Bumman Kim Jangheon Kim Ildu Kimand Jeonghyeon Cha | | 0，，10： | 1 |
| 10 | The Doherty power amplifier显示文摘 | Kim Bumman Kim Jangheon Kim Ildu Cha Jeonghyeon | 2006 | IEEE microwave magazine2006，7，5： | 1 |
| 11 | Pt-Pb六边形纳米板电催化甲醇氧化反应中的表面元素分布效应显示文摘由于副产物CO可降低纯Pt催化剂的活性,因此双金属Pt基催化剂已经广泛用于提高直接甲醇燃料电池的性能.本文合成了Pt-Pb六边形纳米板,作为模型催化剂用于甲醇氧化反应(MOR),并通过乙酸(HAc)处理进一步控制纳米板表面Pt和Pb的分布,从而得到Pt-Pb合金表面均相分布的Pt-Pb纳米板以及非均匀分布的HAc处理的Pt-Pb纳米板.结果表明,与HAc处理的Pt-Pb纳米板相比, Pt-Pb纳米板的MOR催化活性和稳定性提高,这主要是由于亲氧性Pb的加入提高了CO容忍度并修饰了Pt的电子结构. | Hee Jin Kim Yong-Deok Ahn Jeonghyeon Kim Kyoung-Su Kim Yeon Uk Jeong Jong Wook Hong Sang-Il Choi | 2020 | Chinese Journal of Catalysis2020，41，5： | 1 |
| 12 | Ferroelectric composite-based piezoelectric energy harvester for selfpowered detection of obstructive sleep显示文摘Lead-free piezoelectric ceramic is a promising material for energy harvesters,as they have superior electromechanical,ferroelectric,and piezoelectric properties.In addition,piezoelectric ceramics can be blended with polymer to achieve high-flexibility polymer-ceramic composites,providing mechanical robustness and stability.In this context,a new lead-free ferroelectric material,having the chemical formula SrTi_(2)O_(5)(STO),was synthesized using a high-temperature solid-state reaction.Detailed analyses of the structural,morphological,and electrical properties of the synthesized material were performed.STO crystallizes with orthorhombic symmetry and space group of Cmm2.The frequency and temperature-dependent dielectric parameters were evaluated,and impedance spectroscopy shed light on the charge dynamics.The PDMS-STO composites at different mass fraction of the STO were prepared using a solvent casting route,and a corresponding piezoelectric nanogenerator(PENG)was developed.The electrical output of the different PENG by varying massfractions of STO in PDMS and varying force were investigated.The 15%(in mass)PENG device delivered the highest peak-to-peak voltage,current,and power density of 25 V,92 nA,and 0.64 mW@500 MU,respectively.The biomechanical energy harvesting using the PENG device by daily human motions,bending of the device,and attaching the device to laboratory equipment was demonstrated.Later the PENG device was attached to the human throat region,and snoring signals were recorded.A classification model was designed employing the convolutional neural network(CNN)model.Efforts have been laid to differentiate between normal and abnormal snores,which could help the patient with screening and early disease detection,contributing to self-powered healthcare applications. | Swati Panda Hyoju Shin Sugato Hajra Yumi Oh Wonjeong Oh Jeonghyeon Lee P.M.Rajaitha Basanta Kumar Panigrahi Jyoti Shukla Alok Kumar Sahu Perumal Alagarsamy Hoe Joon Kim | 2023 | Journal of Materiomics2023，9，4： | 0 |
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