MMIC Laboratory
Adviser
- Name : Chang Seok Lee
- E-mail : cslee@hanbat.ac.kr
- Location of lab. : N5-509
- Contact number : +82-42-821-1217
Introduction to the Lab (field of research)
MMIC Lab has researched the fields of wireless communication system application, wired
communication system application, microprocessor application, sensor application, and internet application
program, starting with high-frequency IC design. Using all the technologies we have studied, we are
conducting research on IoT applications. In particular, the research topics are focused on people-oriented
IoT scenarios such as the scenario that save energy, etc. rather than device-oriented topics such as TV
control, refrigerator monitoring, and lamp control, etc.
Representative research results
Paper
- Chang-seok Lee et al, “Low power digital PLL based TDC using low rate clocks”, Electronics
Letters(SCI), Vol.47, No.14, July 2011, pp.793-794
- Chang-seok Lee et al, “A 0.18-µm 3.1-4.8 GHz CMOS WIDEBAND SINGLE TO DIFFERENTIAL LNA FOR UWB
SYSTEM”, MICROWAVE AND OPTICAL TECHNOLOGY LETTERS(SCI), Vol.51. No.7, July 2009, pp.1778-1781
- Chang-seok Lee et al, “DESIGN OF QUASI-CHAOTIC SIGNAL GENERATION CIRCUIT FOR UWB CHAOTIC-OOK
SYSTEM”,Journal of Electromagnetic Waves and Applications(SCI), Vol.22, No.13, 2008, pp.1725-1733
Patent
- “Wireless communication system with echo-cancellers and a ring-hybrid”, Korea Patent
No.10-2007-0074060, 2007
- “ULTRA WIDE BAND PULSE SIGNAL GENERATOR”, Korea Patent No.10-2007-0093770, 2007
- “Reciever to rejecting Image signal and Method to rejecting Image signal using it”, Korea
Patent No.10-2007-0038649, 2007
Wisoft Laboratory
Adviser
- Name : Hyun-Ju Park
- E-mail : phj@hanbat.ac.kr
- Location of lab. : N5-510
- Contact number : +82-42-821-1220
Introduction to the Lab (field of research)
Our laboratory, which started from the database laboratory in 1999, was renamed the Wireless
Communication Software(WiSoft) Laboratory in 2007 for various fields and new research activities. As of last
year, the laboratory has produced 29 master's and 5 PhD's. Currently, 26 researchers, including master's and
doctoral students, are conducting research activities to development of academics and technologies in
related fields. Our laboratory aims to study software for next generation wireless communication system. In
particular, we place a lot of weight on software implementation techniques to enhance practical capabilities
as well as theoretical research. There are two main themes of research that are focused on. First, the
embedded team studies the Embedded S/W areas including implementation firmware on low power MCU and RTOS. We
are researching IoT solutions using PAN protocols such as Zigbee and Bluetooth, and conducting control
exercises through Arduino and RPi, which are open source hardware.
Second, the application team is working on design techniques that can be flexibly handled in
applications that require frequent requirements changes and high scalability. In addition to researching
microservice architectures for domains with complex requirements, the team is working on IoT platforms that
can selectively accommodate multiple communication protocols used in the IoT environment.
Lastly, based on ongoing research, we hope to become a research group that studies
technologies that will make people happy in the new era.
Representative research results
Paper
- “A Study for Improving Efficiency of IoT Environment and Solution Based on MQTT Protocol,”
Journal of the Korea Institute of Information and Communication Engineering, 2019. 07.
- “Implementation of query model of CQRS pattern using weather data,”, Journal of the Korea
Institute of Information and Communication Engineering, 2019. 06.
- “RESTful, Redis Based API Server Platform Design for Automatic API Generation and Data Processing
Performance,”The Journal of Korean Institute of Communications and Information Sciences, 2019. 05.
- “IoT Data Collection Platform Based on Selective Protocols,” The Journal of Korean Institute
of Communications and Information Sciences, 2017.04.
- “The Data Collection Solution Based on MQTT for Stable IoT Platforms,” Journal of the Korea
Institute of Information and Communication Engineering, 2016. 04.
Project
- A Study on Heterogeneous Data Integration for Efficient Data Analysis in MSA Environment / National
Research Foundation of Korea(2018. 06 ~ )
- A study of data collection solutions and data storage technology for development of IoT Platforms based
on selective protocol / National Research Foundation of Korea (2015. 11 ~ 2018. 10)
Antenna Laboratory
Adviser
- Name : Jong Kweon Park
- E-mail : ingpark@hanbat.ac.kr
- Location of lab. : N4-307
- Contact number : +82-42-821-1222
Introduction to the Lab (field of research)
In our lab, many kinds of optimum antenna for wireless communication system were proposed,
designed, and developed. Researchers of our lab have experienced the hands-on-background through the antenna
design, fabrication, and measurement. The aim of our lab is the research improvement by learning the theory
and practice as an antenna engineer. We have developed many kinds of antenna using the Ansoft's HFSS 3D
simulator and adopting numerical analysis. Especially, we have developed and studied the UWB antenna, the
multiband antenna, RFID, rectenna, motion detector, DVB-H antenna, Zigbee antenna, and MIMO antenna.
Representative research results
Paper
- Jong-Kweon Park et al, “Design of an Ultra-Compact UHF Passive RFID Tag Antenna for a Medical
Sample Tube” ETRI Journal(SCI), Vol.34, No.6, December 2012, pp.974-977
- Jong-Kweon Park et al, “TRIPLE-BAND ANTENNA DESIGN USING THE MATCHING CIRCUIT FOR
DVB-H/PCS/WLAN”, MICROWAVE AND OPTICAL TECHNOLOGY LETTERS(SCI), Vol.53, No.3, March 2011,
pp.532-536
- Jong-Kweon Park et al, “Utility accrual real-time scheduling for (m,k)-firm deadline-constrained
streams on multiprocessors”, ELECTRONICS LETTERS(SCI), Vol.47, No.5, 3rd March 2011, pp.316-317
- Jong-Kweon Park et al, “DESIGN OF UHF RADIO FREQUENCY IDENTIFICATION METAL TAG ANTENNA USING
T-SHAPED SLOT”, MICROWAVE AND OPTICAL TECHNOLOGY LETTERS(SCI), Vol.53, No.10, October 2011,
pp.2251-2255
Patent
- “Metal Tag Antenna”, Korea Patent No.10-1126672, 2012
- “DUAL-BAND CHIP ANTENNA”, Korea Patent No.10-1178852, 2012
- “TRIPLE-BAND ANTENNA”, Korea Patent No.10-1075583, 2011
- “TRIPLE-BAND ANTENNA”, Korea Patent No.10-1076132, 2011
Digital Communication Laboratory
Adviser
- Name : Hyeok Koo Jung
- E-mail : junghk@hanbat.ac.kr
- Location of lab. : N4-406
- Contact number : +82-42-821-1747
Introduction to the Lab (field of research)
In this Digital Communication Lab., we have researched MIMO OFDM systems, specifically
synchronization algorithms in IEEE802.11n system and MB-OFDM system, the performance enhancement of baseband
using diversity technology and relay-based cooperative communication algorithm.
Representative research results
Paper
- Hyeok Koo Jung, “Alternate Time-Switched Space-Time Block Coding Technique for Single Carrier
Modulation”, IEICE TRANSACTIONS ON Fund. of Electronics, Commun. and Computer Science, Vol.E96-A,
No.3, March 2013, pp.737-739
- Hyeok Koo Jung, “Alternate Time-Switched Space-Time Block Coding Technique for OFDM
Systems”, IEICE TRANSACTIONS ON COMMUNICATIONS, Vol.E95-B, No.9, September 2012, pp.3038-3041
- Hyeok Koo Jung, “Hybrid STT/ERT and SC-FDE technique for single carrier transmission with a guard
period”, IEICE ELECTRONICS EXPRESS, Vol.8, No.20, October, 2011, pp.1723-1729
Patent
- “Alternate Time-Switched Space-Time Block Coding Technique for Single Carrier Modulation”,
Korea Patent No.1014692340000, 2014.
- “OFDM TRANSMISSION SYSTEM WITH SPACE-TIME BLOCK CODING TECHNOLOGY USING SWITCH”, Korea
Patent No.1014462670000, 2014.
Communication Signal Processing Laboratory
Adviser
- Name : Eui-Rim Jeong
- E-mail : erjeong@hanbat.ac.kr
- Location of lab. : N5-315
- Contact number : +82-42-821-1752
Introduction to the Lab (field of research)
Communication signal processing laboratory (CSPLAB), led by Prof. Eui-rim Jeong was
established in 2009 as a part of department of information and communication.
Major research areas of CSPLAB may include :
- Deep learning techniques in Communication Systems.
- Communication Signal Processing associated with synchronization, interference cancellation, and
software-defined radio
- Detection and Estimation for wireless communication system
- Military communication and future mobile communication
There are several undergraduate course works related with lab activities, which are Signal and
Systems, Communication Engineering, Communication systems and Digital Signal Processing. Several research
projects are going on which include mobile wireless and military communications.
Representative research results
Paper
- Joung, S. Jung, S. Chung and Eui-Rim Jeong, “CNN based Tx-Rx distance estimation for UWB system
localisation,” Electronics Letters, (2019).
- S. Kwon, J. Hong, E.- K. Choi, E. Lee, D. E. H, W. Kang, B. Lee, E. -R. Jeong, B. -K. Koo, S. Oh, and Y.
Yi, “Deep learning approaches to detect atrial fibrillation using photoplethysmographic
signals,” JMIR mHealth and uHealth, (2019).
- J. Joung, E. -R. Jeong, “Multiuser space-time line code with optimal and suboptimal power
allocation methods,” IEEE Access, (2018).
- Park, Chan-Won, Eui-Rim Jeong, and Ji-Hoon Kim. “A New Digital Predistortion Technique for Analog
Beamforming Systems.” IEICE Electronics Express, (2016).
- Hong, Soon-il, Kwang-Pyo Lee, and Eui-Rim Jeong. “Robust Digital Predistortion in Saturation
Region of Power Amplifiers.” International Journal of Electrical and Computer Engineering (IJECE)
6.1 (2016).
- Lee, Kwang-Pyo, Soon-Il Hong, and Eui-Rim Jeong. “A Polynomial Digital Pre-Distortion Technique
Based on Iterative Architecture.” International Journal of Electrical and Computer Engineering
(IJECE) 6.1 (2016).
Patent
- MIMO SYSTEM, METHOD OF CONVERTING TO ANALOG SIGNAL IN MIMO TRANSMITTER AND METHOD OF CONVERTING TO
DIGITAL SIGNAL IN MIMO RECEIVER, US patent, pending
- APPARATUS AND METHOD OF DIGITAL PREDISTORTERS FOR MULTI-BAND MULTI-MODE TRANSMITTERS, Korea patent,
10-1094202
- Method and Appratus for pre-compensation of self local oscillator coupling effect in transmitters, Korea
patent, 10-1232815
- Apparatus and method for low cost implementation of adaptive digital predistortion algorithm using
envelope detection feedback, Korea patent, Korea patent, 1020120122302
- Apparatus and method for low cost implementation of adaptive digital predistortion algorithm using
envelope detection feedback, Korea patent, 1020120122302
- Apparatus and method of predistortion of multiple nonlinear amplifiers with single feedback loop, Korea
patent, 1020130033502
- Micro pump for transporting fluids, an air blower, and a digital speaker, Korea patent, 1020120054246
- PRE-DISTORTION APPARATUS AND METHOD FOR SELF LOCAL OSCILLATOR COUPLING EFFECT IN TRANSMITTERS, Korea
patent, 1020110028092
- SYSTEM OF ECHO CANCELLATION AND ECHO CHANNEL ESTIMATION USING THE MULTIPLE ANTENNAS, Korea patent,
10-0941491
- THE RECEVING DEVICE OF BI-DIRECTIONAL TRANSMISSION SYSTEM BASED ON AMPLIFY-AND-FORWARD RELAY AND SELF
INTERFERENCE CANCELLATION METHOD, Korea patent, 10-0909356
- Digital Predistortion Apparatus for Wideband Power Amplifiers and Method Therefor, Korea patent,
1020100041263
Microwave Circuits and Modules Laboratory
Adviser
- Name : Dong-Ho Lee
- E-mail : dhlee@hanbat.ac.kr
- Location of lab. : N4--306
- Contact number : +82-42-821-1748
Introduction to the Lab (field of research)
Since 2010, we have been working on microwave circuits and modules for wireless
communications, optical communications, and radar applications. We are designing integrated circuits using
CMOS, GaAs, and GaN technologies and developing modules on printed circuit boards using commercial chips.
Recently, we are also developing ultrasonic circuits for humidifiers and algae control applications.
Representative research results
Paper
- Jusung Kim, Han-Shin Jo, Kyoung-Jae Lee, Dong-Ho Lee, Dae-Hyun Choi, and Sangkil Kim, “A
Low-Complexity I/Q Imbalance Calibration Method for Quadrature Modulator,” IEEE Transactions on
Very Large Scale Integration (VLSI) Systems, vol. 27, no. 4, pp. 974-977, April 2019.
- Jinseok Park, Seungchan Lee, Dongho Lee, and Songcheol Hong, “A 28GHz 20.3%-Transmitter-Efficiency
1.5°-Phase-Error Beamforming Front-End IC with Embedded Switches and Dual-Vector Variable-Gain Phase
Shifters,” in Proc. IEEE International Solid-State Circuits Conference, pp. 176-177, February
2019.
- Joon Hee Lee, Gyun Tae Kim, Jusung Kim, Ockgoo Lee, Kwang-Jin Koh, and Dong-Ho Lee, “A Linearity
Improvement Technique for Two-Stage Amplifiers with Second Harmonic Driving,” International
Journal of Microwave and Optical Technology, vol. 13, no. 4, pp. 310-316, July 2018.
- Hyunseok Choi, Dong-Ho Lee, and Songcheol Hong, “A Triple-Power-Mode Digital Polar CMOS RF Power
Amplifier With LO Duty Cycle Control,” IEEE Microwave and Wireless Components Letters, vol. 26,
no. 9, pp. 702-704, September, 2016.
- Kichul Kim, Dong-Ho Lee, and Songcheol Hong, “A Dual-Mode Multi-Band Second Harmonic Controlled
SOI LDMOS Power Amplifier,” IEEE Microwave and Wireless Components Letters, vol. 25, no. 7, pp.
466-468, July, 2015.
Patent
- Dong-Ho Lee, “Tunable coupler and stripline coupler,” Korea patent 10-1811245, December 15,
2017.
- Dong-Ho Lee and Hyungtae Shin, “Object recognition device,” Korea patent 10-1735289, May 8,
2017.
- Songcheol Hong, Sangmin Lee, and Dong-Ho Lee, “Apparatus for detecting signal using isolated port
of coupler,” Korea patent 10-1672797, October 31, 2016.
- Changseok Lee and Dong-Ho Lee, “Frequency variation System of Ground Penetrating Radar array for
finding speed improvement,” Korea patent 10-1627346, May 30, 2016.
- Dong-Ho Lee, Songcheol Hong, Dongmin Kim, Sanghoon Sim, and Kye-Ik Jeon, “Transceiver switchless
bi-directional distributed amplifying apparatus,” Korea patent 10-1567472, November 3, 2015.