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INTERNATIONAL JOURNAL

 

 

   

26

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
       

 

   

25

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
       

 

   

24

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

 

   

23

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
       

 

   

22

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 
       

 

   

21

 

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 
       

 

   

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
       

 

   

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
       

 

   

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