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INTERNATIONAL JOURNAL

 

 

   

47

An Optimal Dual-Band Output Matching Method for a Power Amplifier
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Sunwoo Lee, Jooyoung Jeon and Junghyun Kim
    IEEE Transactions on Microwave Theory and Techniques

 

   

46

The Generalization of Stage-Reduced STPS for Low-Loss Unequal 1×4 Phased Array Architecture for 5G IoT Applications
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Ahnwoo Lee, Sunghyuk Kim, Dongmin Lee, Junghyun Kim and TaeHwan Jang
    IEEE Internet of Things Journal

 

   

45

High-Q Transformer Neutralization Technique for W-Band Dual-Band LNA Using 0.1 μm GaAs pHEMT Technology 
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Taejoo Sim, Dongmin Lee, Wansik Kim, Kichul Kim, Jeungwon Choi, Minsu Kim and Junghyun Kim
    Journal of Electromagnetic Engineering and Science

 

   

44

A Concurrent 26/48 GHz Low-Noise Amplifier With an Optimal Dual-Band Noise Matching Method Using GaAs 0.15 μm pHEMT
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Sunwoo Lee, Wonwoo Seo, Sunghyuk Kim, Byunghun Ko, Songjune Lee, Minsu Kim and Junghyun Kim
    IEEE Transactions on Circuits and Systems : Express Briefs

 

   

43

A 5.15–7.125-GHz Differential Power Amplifier With Enhanced Linearity of Average Power Region Using Dynamic Cross-Coupled Capacitor
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Sungwoon Hwang, Jooyoung Jeon, Sooji Bae, Byeongcheol Yoon, Sungyoon Kang and Junghyun Kim
    IEEE Transactions on Microwave Theory and Techniques

 

   

42

GaN-based 4-MHz Full-Bridge Electrosurgical Generator Using Zero-Voltage Switching over Wide Load Impedance Range
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Sungwoon Hwang, Seokmin Lee, Byeongcheol Yoon, Byongchang Jeong, Jongchan Kim, Sungmin Kim and Junghyun Kim
    IEEE Transactions on Biomedical Circuits and Systems

 

   

41

Improved Linearity and Efficiency of 5-GHz HBT Power Amplifier Using Transformer-Based Second Harmonic Trap Network
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Sungwoon Hwang, Jooyoung Jeon, Sooji Bae, Byeongcheol Yoon, Sungyoon Kang and Junghyun Kim
    IEEE Microwave and Wireless Technology Letters

 

   

40

Wideband Wide Beam-Width Modified Angled Dipole Antenna for 5G Millimeter-Wave IoT Applications
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Taehwan Jang, Ahnwoo Lee, Sunghyuk Kim, Heesung Lee, Jaesuk Lee, Hoongeun Song and Junghyun Kim
    IEEE Access

 

   

39

A 39/48 GHz Switchless Reconfigurable Low Noise Amplifier Using Common Gate and Coupled-Line-Based Diplexer
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Byunghun Ko, Sunwoo Lee, Wonwoo Seo, Taejoo Sim, Sunghyuk Kim, Min-su Kim and Junghyun Kim
    IEEE Transactions on Circuits and System Ⅱ-Express Briefs

 

   

38

Modeling of Practical Substrate Thickness in Multi-Layer Printed Circuit Board for Millimeter-Wave Packaging
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Dongmin Lee, Ahnwoo Lee, Minchul Kim, Wonseok Choe, Chungsik Lee, Kwansun Yoon, Mingeun Jeong and Junghyun Kim
    IEEE Transactions on Components, Packaging and Manufacturing Technology
       

 

   

37

4 MHz Electrosurgical Generator System for Wide Load Impedance Range with SiC-Based Full Bridge Inverter
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Byeongcheol Yoon, Sungwoon Hwang, Seokmin Lee, Byongchang Jeong, Jongchan Kim, Sungmin Kim and Junghyun Kim
    IEEE Transactions on Industrial Electronics 
       

 

   

36

Switchless Dual-Power-Mode Fully Differential HBT Power Amplifier for Mobile Applications
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Sungwoon Hwang, Jooyoung Jeon, Sooji Bae, Byeongcheol Yoon,
Sungyoon Kang, and Junghyun Kim
    IEEE Transactions on Microwave Theory and Techniques
       

 

   

35

High-Powered RF SOI Switch With Fast Switching Time for TDD Mobile Applications
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Wonwoo Seo, Sunghyuk Kim, Byunghun Ko, Heesauk Jhon, and Junghyun Kim
    IEEE Access
       

 

   

34

A W-Band Amplifier With a New Wide-Band Interstage Matching Technique Using Self-Resonance of a Microstrip-Coupled Line
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Sunwoo Lee, Wansik Kim, Sosu Kim, Min-Su Kim, and Junghyun Kim
    IEEE Access
       

 

   

33

Novel Quantum Molecular Resonance Energy Source for Laparoscopic Bipolar Vessel Sealer: An Experimental Study in Animal Model
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Seokhwan Bang, Jiwoong Yu, Jungeun Im, Soonyoung Kwon, Jongchang Kim, Sungmin Kim, Jung Hyun Kim and Byong Chang Jeong
    MDPI Applied Sciences
       

 

   

32

A 2.4 GHz 20 W 8-Channel RF Source Module with Improved Channel Output Balance
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Hyosung Nam, Taewan Kim, Taejoo Sim, Sooji Bae, and Junghyun Kim
    MDPI Applied Sciences
       

 

   

31

High-performance RF Power Amplifier Module using Optimum Chip-level Packaging Structure
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Hyosung Nam, Jihoon Kim, Jooyoung Jeon, Heesauk Jhon, and Junghyun Kim
    IEEE Transactions on Industrial Electronics
       

 

   

30

A 2.4 GHz 20 W 8-channel RF Source Module with Solid-State Power Amplifiers for Plasma Generators
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Hyosung Nam, Taejoo Sim and Junghyun Kim /
    MDPI Electronics
       

 

   

29

A Programmable Impedance Tuner with a High Resolution Using a 0.18-um CMOS SOI Process for Improved Linearity
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Younghwan Bae, Heesauk Jhon and Junghyun Kim /
    MDPI Electronics
       

 

   

28

W-Band Backward Distributed Frequency Doubler Using GaAs 0.15- μm pHEMT Process
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Minchul Kim, Kwangseok Choi and Junghyun Kim /
    IEEE Microwave and Wireless Components Letters
       

 

   

27

A 6–18-GHz Switchless Reconfigurable Dual-Band Dual-Mode PA MMIC Using Coupled-Line-Based Diplexer
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Kwangseok Choi, Hongjong Park, Minchul Kim, Junghyun Kim 
and Youngwoo Kwon /
    IEEE Transactions on Microwave Theory and Techniques
       

 

   

26

U-shaped Stacked Structure Monolithic Transformer for Efficiency Improvement
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Sungyoon Kang, Minchul Kim and Junghyun Kim /
    Microwave and Optical Technology Letters
       

 

   

25

A Linearity-improved Multi-band Envelop Tracking Tx Power Amplifier under Antenna Mismatch for Mobile Applications
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Donghyeon Ji, and Junghyun Kim /
    Microwave and Optical Technology Letters
       

 

   

24

A 6-18 GHz GaN Reactively Matched Distributed Power Amplifier Using Simplified Bias Network and Reduced Thermal Coupling
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Hongjong Park, Hyosung Nam, Kwangseok Choi, Junghyun Kim, 
and Youngwoo Kwon /
    IEEE Trans. on Microwave Theory and Techniques
       

 

   

23

Highly Efficient 5.15-5.85 GHz Neutralized HBT Power Amplifier for LTE Applications
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Sungyoon Kang, Moon-Suk Jeon, and Junghyun Kim /
    IEEE Microwave and Wireless Component Letters 
       

 

   

22

 

A Multi-Band Directional Coupler Using SOI CMOS for RF Front-End Applications copy.png
    Donghyeon Ji, and Junghyun Kim /
    IEEE Microwave and Wireless Component Letters 
       

 

   

21

A G-Band Frequency Doubler Using a Commercial 150 nm GaAs pHEMT Technology
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Iljin Lee, Junghyun Kim, and Sanggeun Jeon /
    Journal of Electromagnetic Engineering and Science
       

 

   

20

 

Analysis and Design of Helix-on-Pads for Miniaturized Mobile Applications
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Changhyun Yoo, Unha Kim, and Junghyun Kim /
    IEEE Trans. on Microwave Theory and Techniques
       

 

   

19

 

A Simple Extraction Method of Thermal Resistance in Multifinger GaAs HBT
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Gyeongjun Goh, Unha Kim, Moon-Suk Jeon, and Junghyun Kim /
    IEEE Transactions on Electron Devices
       

 

   

18

 

A Novel Load Mismatch Detection and Correction Technique for 3G/4G Load Insensitive Power Amplifier Application
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Donghyeon Ji, Jooyoung Jeon, and Junghyun Kim /
    IEEE Trans. on Microwave Theory and Techniques
       

 

   

17

 

A Programmable Impedance Tuner With Finite SWRs for Load-Pull Measurement of Handset Power Amplifiers
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Younghwan Bae, Unha Kim, and Junghyun Kim /
    IEEE Microwave and Wireless Component Letters 
       

 

   

16

 

A Multi-Mode Multi-Band Reconfigurable Power Amplifier for 2G/3G/4G Handset Applications
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Sungyoon Kang, Unha Kim, and Junghyun Kim /
    IEEE Microwave and Wireless Component Letters 
       

 

   

15

 

A Fully-Integrated Penta-Band Tx Reconfigurable Power Amplifier with SOI CMOS Switches for Mobile Handset Applications
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Unha Kim, Sungyoon Kang, Junghyun Kim, and Youngwoo Kwon /
    ETRI Journal
       

 

   

14

 

A Multi-Band Reconfigurable Power Amplifier for UMTS Handset Applications
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Unha Kim, Sungyoon Kang, Jungrin Woo, Youngwoo Kwon, and Junghyun Kim /
    IEEE Trans. on Microwave Theory and Techniques
       

 

   

13

 

Tunable Impedance Transformer Using Multiconductor Coupled Lines
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Jinho Jeong, Junghyun Kim, and Sanggeun Jeon /
    Microwave Optical Technology Letters 
       

 

   

12

 

Improvement of Noise Performance in Phased-Array Receivers
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Junghyun Kim, Jinho Jeong, and Sanggeun Jeon /
    ETRI Journal
       

 

   

11

 

Ultra-small Form-Factor Helix on Pad-Type Stage-Bypass WCDMA Tx Power Amplifier Using a Chip-Stacking Technique and a Multilayer Substrate
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Changhyun Yoo, and Junghyun Kim /
    ETRI Journal
       

 

   

10

 

A Fully Integrated HBT MMIC Series-Type Extended Doherty Amplifier for W-CDMA Handset Applications
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Chanhoe Koo, Junghyun Kim, and Youngwoo Kwon /
    ETRI Journal
       

 

   

9

 

Helix on Pad-Type Ultra Small-Size Power Amplifiers for WCDMA Handset Applications
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Changhyun Yoo, Unha Kim, Youngwoo Kwon, and Junghyun Kim /
    IEEE Microwave and Wireless Component Letters 
       

 

   

8

 

Fully integrated 3 x 3 mm BiFET stage-bypass power amplifier for WCDMA handset application
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Joomin Jung and Junghyun Kim / 
    ​Electronics Letters
       

 

   

7

 

A Highly Efficient GaAs HBT MMIC Balanced Power Amplifier for W-CDMA Handset Applications
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​Unha Kim, Junghyun Kim, and Youngwoo Kwon​ /
    ETRI Journal
       

 

   

6

 

Temperature Compensating Bias Circuit for GaAs HBT RF Power Amplifiers with a Stage bypass Architecture
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Jooyoung Jeon, Junghyun Kim, and Youngwoo Kwon /
    Electronics Letters
       

 

   

5

 

A Highly-Intergrated Doherty Amplifier for CDMA Handset Applications using Active Phase Splitter
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Junghyun Kim, Seongjun Bae, Joomin Jeong, Jooyoung Jeon and Youngwoo Kwon /
    IEEE Microwave and Wireless Components Letter
       

 

   

4

 

A high-performance 40-85 GHz MMIC SPDT switch using FET-intergrated transmission line structure
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Junghyun Kim, Won Ko, Sungho Kim, Jinho Jeong, and Youngwoo Kwon /
    IEEE Microwave and Wireless Components Letter / vol. 13 no. 12 pp. 505-507
       

 

   

3

 

High-Performance V-band Cascode HEMT Mixer and Downconverter Module
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Junghyun Kim, Moonsuk Jeon, Dongki Kim, Jinho Jeong, and Youngwoo Kwon /
    IEEE Trans. on Microwave Theory and Techniques / vol. 51 no. 3 pp. 805-810
       

 

   

2

 

A new "active" predistorter with high gain and programmable gain and phase characteristics using cascode-FET structures
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Junghyun Kim, Moonsuk Jeon, Jaehak Lee, and Youngwoo Kwon /
    IEEE Trans. on Microwave Theory and Techniques
       

 

   

1

 

Intermodulation Analysis of Dual-Gate FET Mixers
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Junghyun Kim and Youngwoo Kwon /
    IEEE Trans. on Microwave Theory and Techniques