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1

X-band high-power amplifier with a magnetically coupled power-combiner

Kyung-Ai Lee, Changkun Park, Jong-Hoon Chun, Songcheol Hong

Journal:

Microwave and Optical Technology Letters

Year:

2010

Language:

english

File:

PDF, 296 KB

english, 2010

2

Maximum power point tracking without current sensor for photovoltaic module integrated converter using Zigbee wireless network

Moon, Sol, Kim, Seong-Jin, Seo, Jeong-Won, Park, Joung-Hu, Park, Changkun, Chung, Chan-Su

Journal:

International Journal of Electrical Power & Energy Systems

Year:

2014

Language:

english

File:

PDF, 4.96 MB

english, 2014

3

Cell-Based ESD Diodes with a Zigzag-Shaped Layout to Enhance the ESD Survival Level

Son, Minoh, Park, Changkun

Journal:

Journal of Circuits System and Computers

Year:

2017

Language:

english

File:

PDF, 308 KB

english, 2017

4

Brain and eyes of Kerygmachela reveal protocerebral ancestry of the panarthropod head

Park, Tae-Yoon S., Kihm, Ji-Hoon, Woo, Jusun, Park, Changkun, Lee, Won Young, Smith, M. Paul, Harper, David A. T., Young, Fletcher, Nielsen, Arne T., Vinther, Jakob

Journal:

Nature Communications

Year:

2018

Language:

english

File:

PDF, 2.19 MB

english, 2018

5

Input Balun Embedded Low-Noise Amplifier With a Differential Structure

Yoon, Jaehyuk, Park, Changkun

Journal:

IEEE Microwave and Wireless Components Letters

Year:

2014

Language:

english

File:

PDF, 743 KB

english, 2014

6

A CMOS Active Balun Using Bond Wire Inductors and a Gain Boosting Technique

Lee, Dong Ho, Han, Jeonghu, Park, Changkun, Hong, Songcheol

Journal:

IEEE Microwave and Wireless Components Letters

Year:

2007

Language:

english

File:

PDF, 332 KB

english, 2007

7

New constraints on the relationship between 26Al and oxygen, calcium, and titanium isotopic variation in the early Solar System from a multielement isotopic study of spinel-hibonite inclusions

Kööp, Levke, Nakashima, Daisuke, Heck, Philipp R., Kita, Noriko T., Tenner, Travis J., Krot, Alexander N., Nagashima, Kazuhide, Park, Changkun, Davis, Andrew M.

Journal:

Geochimica et Cosmochimica Acta

Year:

2016

Language:

english

File:

PDF, 2.86 MB

english, 2016

8

A link between oxygen, calcium and titanium isotopes in 26Al-depleted hibonite-rich CAIs from Murchison and implications for the heterogeneity of dust reservoirs in the solar nebula

Kööp, Levke, Davis, Andrew M., Nakashima, Daisuke, Park, Changkun, Krot, Alexander N., Nagashima, Kazuhide, Tenner, Travis J., Heck, Philipp R., Kita, Noriko T.

Journal:

Geochimica et Cosmochimica Acta

Year:

2016

Language:

english

File:

PDF, 3.52 MB

english, 2016

9

A CMOS power amplifier using a split cascode structure to enhance its efficiency

Sim, Yonghun, Kang, Inseong, Park, Changkun

Journal:

Microwave and Optical Technology Letters

Year:

2016

Language:

english

File:

PDF, 388 KB

english, 2016

10

Calcium-aluminum-rich inclusions with fractionation and unidentified nuclear effects (FUN CAIs): II. Heterogeneities of magnesium isotopes and 26Al in the early Solar System inferred from in situ high-precision magnesium-isotope measurements

Park, Changkun, Nagashima, Kazuhide, Krot, Alexander N., Huss, Gary R., Davis, Andrew M., Bizzarro, Martin

Journal:

Geochimica et Cosmochimica Acta

Year:

2017

Language:

english

File:

PDF, 2.70 MB

english, 2017

11

A CMOS power amplifier using an active balun as a driver stage to enhance its gain

Sim, Yonghun, Park, Jonghoon, Yoo, Jinho, Lee, Changhyun, Park, Changkun

Journal:

Microelectronics Journal

Year:

2017

Language:

english

File:

PDF, 1.87 MB

english, 2017

12

Fully integrated 1.9-GHz CMOS power amplifier for polar transmitter applications

Changkun Park, Younsuk Kim, Haksun Kim, Songcheol Hong

Journal:

Microwave and Optical Technology Letters

Year:

2006

Language:

english

File:

PDF, 127 KB

english, 2006

13

A CMOS power amplifier with an adaptive bias scheme for mobile radio frequency identification reader applications

Jeonghu Han, Younsuk Kim, Changkun Park, Dongho Lee, Songcheol Hong

Journal:

Microwave and Optical Technology Letters

Year:

2007

Language:

english

File:

PDF, 367 KB

english, 2007

14

CMOS power cell with improved junction breakdown using interdigitated body contact

Changkun Park, Jeonghu Han, Songcheol Hong

Journal:

Microwave and Optical Technology Letters

Year:

2007

Language:

english

File:

PDF, 351 KB

english, 2007

15

A 1.9-GHz CMOS power amplifier using an interdigitated transmission line transformer

Changkun Park, Sang-Hyun Baek, Bon-Hyun Ku, Songcheol Hong

Journal:

Microwave and Optical Technology Letters

Year:

2007

Language:

english

File:

PDF, 200 KB

english, 2007

16

A class-E CMOS RF power amplifier with cascaded class-D driver amplifier

Jaemin Jang, Hongtak Lee, Changkun Park, Songcheol Hong

Journal:

Microwave and Optical Technology Letters

Year:

2008

Language:

english

File:

PDF, 334 KB

english, 2008

17

The changes in potential usable water resources by increasing the amount of groundwater use: the case of Gapcheon watershed in Korea

Sangmi Jun, Jae-hyeon Park, Wooseok Lee, Changkun Park, Sangho Lee, Kil Seong Lee, Gyo-Cheol Jeong

Journal:

Geosciences Journal

Year:

2010

Language:

english

File:

PDF, 1.34 MB

english, 2010

18

A Quasi-Four-Pair Class-E CMOS RF Power Amplifier With an Integrated Passive Device Transformer

Hongtak Lee,, Changkun Park,, Songcheol Hong,

Journal:

IEEE Transactions on Microwave Theory and Techniques

Year:

2009

Language:

english

File:

PDF, 1.59 MB

english, 2009

19

Tournament-Shaped Magnetically Coupled Power-Combiner Architecture for RF CMOS Power Amplifier

Changkun Park, Dong Ho Lee, Jeonghu Han, Songcheol Hong

Journal:

IEEE Transactions on Microwave Theory and Techniques

Year:

2007

Language:

english

File:

PDF, 1.20 MB

english, 2007

20

A 1.8-GHz CMOS Power Amplifier Using a Dual-Primary Transformer With Improved Efficiency in the Low Power Region

Changkun Park, Jeonghu Han, Haksun Kim, Songcheol Hong

Journal:

IEEE Transactions on Microwave Theory and Techniques

Year:

2008

Language:

english

File:

PDF, 923 KB

english, 2008

21

A Load-Shared CMOS Power Amplifier With Efficiency Boosting at Low Power Mode for Polar Transmitters

Dong Ho Lee, Changkun Park, Jeonghu Han, Younsuk Kim, Songcheol Hong, Chang-Ho Lee, Laskar, J.

Journal:

IEEE Transactions on Microwave Theory and Techniques

Year:

2008

Language:

english

File:

PDF, 1.21 MB

english, 2008

22

A 1.8-GHz CMOS Power Amplifier Using Stacked nMOS and pMOS Structures for High-Voltage Operation

Ki Yong Son, Changkun Park, Songcheol Hong

Journal:

IEEE Transactions on Microwave Theory and Techniques

Year:

2009

Language:

english

File:

PDF, 1.08 MB

english, 2009

23

[IEEE 2007 IEEE Radio Frequency Integrated Circuits Symposium - Honolulu, HI, USA (2007.06.3-2007.06.5)] 2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium - A High Dynamic Range CMOS RF Power Amplifier with a Switchable Transformer for Polar Transmitters

Kim, Younsuk, Ku, Bon-Hyun, Park, Changkun, Lee, Dong Ho, Hong, Songcheol

Year:

2007

Language:

english

File:

PDF, 384 KB

english, 2007

24

Oxygen isotopic composition of the solar nebula gas inferred from high-precision isotope imaging of melilite crystals in an Allende CAI

PARK, Changkun, WAKAKI, Shigeyuki, SAKAMOTO, Naoya, KOBAYASHI, Sachio, YURIMOTO, Hisayoshi

Journal:

Meteoritics and Planetary Science

Year:

2012

Language:

english

File:

PDF, 685 KB

english, 2012

25

Transceiver with inductive coupling for wireless chip-to-chip communication using a 50-nm digital CMOS process

Lee, Changhyun, Park, Jonghoon, Yoo, Jinho, Cho, Hyungjun, Choi, Jungi, Cho, Jeongho, Park, Changkun

Journal:

Microelectronics Journal

Year:

2013

Language:

english

File:

PDF, 3.08 MB

english, 2013

26

[IEEE 2010 IEEE/MTT-S International Microwave Symposium - MTT 2010 - Anaheim, CA, USA (2010.05.23-2010.05.28)] 2010 IEEE MTT-S International Microwave Symposium - Quad-band inverse class-F power amplifier using novel composite right/left-handed transmission line

Choi, Jaewon, Yang, Seungin, Moon, Yong, Park, Changkun, Jang, Byung-Jun, Cho, Jun-Kyung, Seo, Chulhun

Year:

2010

Language:

english

File:

PDF, 1.06 MB

english, 2010

27

Current Shared Cascade Structure for the Driver Stages of Switching Mode RF Power Amplifiers

Hwang, Hoyong, Park, Changkun

Journal:

IEEE Microwave and Wireless Components Letters

Year:

2013

Language:

english

File:

PDF, 1.03 MB

english, 2013

28

Amoeboid olivine aggregates from CH carbonaceous chondrites

Krot, Alexander N., Park, Changkun, Nagashima, Kazuhide

Journal:

Geochimica et Cosmochimica Acta

Year:

2014

Language:

english

File:

PDF, 16.43 MB

english, 2014

29

Hydrothermal origin of hexagonal CaAl 2 Si 2 O 8 (dmisteinbergite) in a compact type A CAI from the Northwest Africa 2086 CV3 chondrite

Fintor, Krisztian, Park, Changkun, Nagy, Szabolcs, Pál-Molnár, Elemér, Krot, Alexander N.

Journal:

Meteoritics and Planetary Science

Year:

2014

Language:

english

File:

PDF, 4.68 MB

english, 2014

30

Zigzag-Shaped Coil Array Structure for Wireless Chip-to-Chip Communication Applications

Changhyun Lee,, Jonghoon Park,, Changkun Park,

Journal:

IEEE Transactions on Electron Devices

Year:

2014

Language:

english

File:

PDF, 2.88 MB

english, 2014

31

Study on Fault Current Limiting Characteristics of an SFCL Using Magnetic Coupling of Two Coils With Mechanical Switch Driven by Electromagnetic Repulsion Force

Sung-Hun Lim,, Hyeong-Joon Ahn,, Changkun Park,

Journal:

IEEE Transactions on Appiled Superconductivity

Year:

2014

Language:

english

File:

PDF, 843 KB

english, 2014

32

A CMOS LNA Using a Harmonic Rejection Technique to Enhance Its Linearity

Jaehyuk Yoon,, Changkun Park,

Journal:

IEEE Microwave and Wireless Components Letters

Year:

2014

Language:

english

File:

PDF, 785 KB

english, 2014

33

Power detection method using a virtual ground node for RF CMOS power amplifier applications

Seo, Donghwan, Lee, Changhyun, Park, Jonghoon, Park, Changkun

Journal:

Journal of Electromagnetic Waves

Year:

2012

Language:

english

File:

PDF, 470 KB

english, 2012

34

[IEEE 2005 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium - Long Beach, CA, USA (12-14 June 2005)] RFIC) Symposium, 2005. Digest of Papers. 2005 IEEE Radio Frequency integrated Circuits - Properties of RFLDMOS with low resistive substrate for handset power applications

Juhyun Ko,, Sunhak Lee,, Han-Soo Oh,, Joo-Hyun Jeong,, Donghyun Baek,, Kyoungmin Koh,, Jeonghu Han,, Changkun Park,, Songcheol Hong,, Ilhun Shon,

Year:

2005

Language:

english

File:

PDF, 614 KB

english, 2005

35

[IEEE 2006 Asia-Pacific Microwave Conference - Yokohama, Japan (2006.12.12-2006.12.15)] 2006 Asia-Pacific Microwave Conference - A CMOS power amplifier for a UHF RFID reader

Younsuk Kim,, Jeonghu Han,, Dongho Lee,, Changkun Park,, Songcheol Hong,

Year:

2006

Language:

english

File:

PDF, 145 KB

english, 2006

36

[IEEE 2008 38th European Microwave Conference (EuMC) - Amsterdam, Netherlands (2008.10.27-2008.10.31)] 2008 38th European Microwave Conference - A 28-dBm pHEMT Power Amplifier Using Voltage Combiner for K-Band Applications

Koo, Bonhoon, Park, Changkun, Lee, Kyung Ai, Chun, Jong-Hoon, Hong, Songcheol

Year:

2008

Language:

english

File:

PDF, 366 KB

english, 2008

37

A 1.9-GHz Triple-Mode Class-E Power Amplifier for a Polar Transmitter

Park, Changkun, Kim, Younsuk, Kim, Haksun, Hong, Songcheol

Journal:

IEEE Microwave and Wireless Components Letters

Year:

2007

Language:

english

File:

PDF, 575 KB

english, 2007

38

[IEEE 2007 IEEE Radio Frequency Integrated Circuits Symposium - Honolulu, HI, USA (2007.06.3-2007.06.5)] 2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium - 1.8-GHz CMOS Power Amplifier with Stage-Convertible Structure Using Differential Line Inductor

Park, Changkun, Lee, Dong Ho, Lee, Yumi, Han, Jeonghu, Baek, Sang-Hyun, Kim, Younsuk, Hong, Songcheol

Year:

2007

Language:

english

File:

PDF, 333 KB

english, 2007

39

Resonance frequency effects of an external coil for IOP sensor applications

Hwang, Hoyong, Kang, Byungjoo, Lee, Soo Hyun, Jang, Cheol-In, Kang, Ji Yoon, Park, Changkun

Journal:

Journal of Electromagnetic Waves

Year:

2014

Language:

english

File:

PDF, 572 KB

english, 2014

40

[IEEE IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 - San Francisco, CA (JUNE 11-13, 2006)] IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 - A Fully-Integrated 900-MHz CMOS Power Amplifier for Mobile RFID Reader Applications

Jeonghu Han,, Younsuk Kim,, Changkun Park,, Dongho Lee,, Songcheol Hong,

Year:

2006

Language:

english

File:

PDF, 218 KB

english, 2006

41

A CMOS RF Power Amplifier Using an Off-Chip Transmision Line Transformer With 62% PAE

Jaemin Jang,, Changkun Park,, Haksun Kim,, Hong, S.

Journal:

IEEE Microwave and Wireless Components Letters

Year:

2007

Language:

english

File:

PDF, 755 KB

english, 2007

42

A 1.9-GHz CMOS Power Amplifier Using Three-Port Asymmetric Transmission Line Transformer for a Polar Transmitter

Park, Changkun, Kim, Younsuk, Kim, Haksun, Hong, Songcheol

Journal:

IEEE Transactions on Microwave Theory and Techniques

Year:

2007

Language:

english

File:

PDF, 1.68 MB

english, 2007

43

X-band CMOS power amplifier with high efficiency for motion detection radar

Park, Jonghoon, Lee, Changhyun, Park, Changkun

Journal:

Microwave and Optical Technology Letters

Year:

2014

Language:

english

File:

PDF, 647 KB

english, 2014

44

[IEEE 2008 Asia Pacific Microwave Conference - Macau (2008.12.16-2008.12.20)] 2008 Asia-Pacific Microwave Conference - On-chip power combining method in CMOS power amplifier

Yumi Lee,, Changkun Park,, Songcheol Hong,

Year:

2008

Language:

english

File:

PDF, 144 KB

english, 2008

45

Split driver stages for a switching mode power amplifier with multipairs of power stages

Seo, Donghwan, Park, Changkun

Journal:

Microwave and Optical Technology Letters

Year:

2014

Language:

english

File:

PDF, 524 KB

english, 2014

46

[IEEE 2005 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium - Long Beach, CA, USA (12-14 June 2005)] RFIC) Symposium, 2005. Digest of Papers. 2005 IEEE Radio Frequency integrated Circuits - A large-signal model of RF LDMOS with skin effects of power combining structures

Jeonghu Han,, Changkun Park,, Donghyun Baek,, Kyoungmin Koh,, Juhyun Ko,, Ilhun Shon,, Songcheol Hong,

Year:

2005

Language:

english

File:

PDF, 696 KB

english, 2005

47

A miniaturized 2.4-GHz CMOS low-noise amplifier using a gate-source coupling technique

Kim, Taewon, Lee, Changhyun, Park, Changkun

Journal:

Microwave and Optical Technology Letters

Year:

2014

Language:

english

File:

PDF, 288 KB

english, 2014

48

Numerical Analysis of the Supply Voltage of a Switching Mode RF CMOS Power Amplifier to Enhance Its Efficiency

Hwang, Hoyong, Seo, Donghwan, Lee, Changhyun, Park, Changkun

Journal:

Microwave and Optical Technology Letters

Year:

2013

Language:

english

File:

PDF, 497 KB

english, 2013

49

Electrostatic discharge protection devices with series connection using distributed cell-based diodes

Son, Minoh, Park, Changkun

Journal:

Electronics Letters

Year:

2014

Language:

english

File:

PDF, 341 KB

english, 2014

50

Investigation of the power transistor size related to the efficiency of switching-mode RF CMOS power amplifier

Hwang, Hoyong, Seo, Donghwan, Park, Jonghoon, Park, Changkun

Journal:

Microwave and Optical Technology Letters

Year:

2014

Language:

english

File:

PDF, 818 KB

english, 2014

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