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Journal Publications

  1. Ui-Gyu Choi and Jong-Ryul Yang*, "A D-band Two-Way Differential Power Divider on 65-nm CMOS Process," IEEE Microwave and Wireless Technology Letters, vol. 34, no. 3, pp. 279-282, Mar. 2024. 

  2. Hyeon Jin Son, Ui-Gyu Choi and Jong-Ryul Yang*, "K-band CMOS Voltage-Controlled Oscillator using Tail Current Modulation with Half-Output Frequency," AEUE - International Journal of Electronics and Communications, vol. 175, article no. 155101, Feb. 2024. 

  3. Hyeon Jin Son, Dong-Jun Shin, Ui-Gyu Choi and Jong-Ryul Yang*, "K-band CMOS Voltage-Controlled Oscillator using Switched Self-Biasing Technique," Microwave and Optical Technology Letters, vol. 66, no. 1, e33979, Jan. 2024. 

  4. Ji-In Jung, Ui-Gyu Choi and Jong-Ryul Yang*, "150 GHz Folded Dipole Antenna-on-Chip Based on Artificial Magnetic Conductor Structure," Microwave and Optical Technology Letters, Vol. 66, no. 1, e33934, Jan. 2024. 

  5. Jae Young Sim, In-Seong Lee, Yuna Park and Jong-Ryul Yang*, "Mutual Compensation Range Detection Method using Multi-Modulation Radar for Precision Range Detection," IEEE Sensors Journal, vol. 23, no. 24, pp. 30368-30377, Dec. 2023.

  6. G.-H. Ko, J. Y. Park, K.-I. Oh, G. S. Kim, E. Hyun, Jong-Ryul Yang, J.-G. Kim and D. Baek, "24-GHz 4Tx-4Rx Phased Array Transceiver with Automatic Beam Steering Mode for FMCW Radar Applications," IEEE Transactions on Microwave Theory and Techniques, Early Access, Oct. 2023.​

  7. Dong-Jun Shin and Jong-Ryul Yang*, "A Highly Efficient E-Band CMOS Frequency Tripler with a Third Harmonic Boosting Technique," IEEE Microwave and Wireless Technology Letters, vol. 33, no. 8, pp. 1223-1226, Aug. 2023.

  8. K.-M. Lee, In-Seong Lee, H.-S. Shin, J.-W. Ok, J.-H. Youn, E.-N. You, Jong-Ryul Yang and K.-T. Kim*, "Reconstruction of Range-Doppler Map Corrupted by FMCW Radar Asynchronization," Sensors, vol. 23, no. 12, p. 5605, 15 Jun. 2023

  9. In-Seong Lee and Jong-Ryul Yang*, "Signal Pre-Processing for Heartbeat Detection using Continuous Wave Doppler Radar," IEEE Microwave and Wireless Technology Letters, vol. 33, no. 4, pp. 479-482, Apr. 2023.

  10. Dong-Jun Shin, Ui-Gyu Choi and Jong-Ryul Yang*, "A Compact D-Band CMOS Frequency Sixtupler using a Mode Analysis of the Harmonics," IEEE Transactions on Microwave Theory and Techniques, vol. 71, no. 4, pp. 1501-1508, Apr. 2023.

  11. K.-M. Lee, In-Seong Lee, H.-S. Shin, J.-W. Ok, J.-H. Youn, E.-N. You, Jong-Ryul Yang and K.-T. Kim*, "Signal Modeling for Bistatic FMCW Radar Asynchronization and Its Effect on ISAR Images," The Journal of Korean Institute of Electromagnetic Engineering and Science, vol 34, no. 3, pp. 218-231, Mar. 2023.

  12. Jae Young Sim and Jong-Ryul Yang*, "Frequency Discrimination Based on the Different Number of Peaks in Envelope Detection of Two-Tone Continuous-Wave Radar Systems," Microwave and Optical Technology Letters, vol. 65, no. 2, pp. 519-524, Feb. 2023.

  13. Moon-Jeong Lee, Ha-Neul Lee, Ga-Eun Lee, S.-T. Han, D.-W. Kang* and Jong-Ryul Yang*, "CMOS Detector Staggered Array Module for Sub-Terahertz Imaging on Conveyor Belt System," Sensors, vol. 23, no. 2, p. 1232, 20 Jan. 2023.

  14. Ha-Neul Lee, Joon-Hyuk Yoon and Jong-Ryul Yang*, "A Miniaturized Plasmon Detector using 0.25 um CMOS Process for Large-Scale Sub-Terahertz Imaging," IDEC Journal of Integrated Circuits and Systems, vol. 9, no. 1, Jan. 2023. 

  15. Jae Young Sim and Jong-Ryul Yang*, "Frequency Discrimination Method using Asymmetric Transmission Time in FSK Radar," Journal of Electromagnetic Engineering and Science, vol. 22, no. 4, pp. 496-501, Jul. 2022.

  16. Ji-In Jeong and Jong-Ryul Yang*, "5.8-GHz Patch Antenna with Enhanced Defected Ground Structure for Size Reduction and Increased Bandwidth," Journal of Electromagnetic Engineering and Science, vol. 22, no. 3, pp. 245-251, May 2022.

  17. Y. I. Jang, Jae Young Sim, Jong-Ryul Yang and N. K. Kwon*, "Improving heart rate variability information consistency in Doppler cardiogram using signal reconstruction system with deep learning for contact-free heartbeat monitoring," Biomedical Signal Processing and Control, vol. 76, article no. 103691, Apr. 2022. 

  18. Hyeon-Jin Son, Dong-Jun Shin, Ui-Gyu Choi and Jong-Ryul Yang*, "A Widely Tunable K-band Voltage-Controlled Oscillator," IDEC Journal of Integrated Circuits and Systems, vol. 8, no. 2, Apr. 2022.

  19. Se-Young Jang and Jong-Ryul Yang*, "Double Split-Ring Resonator for Dielectric Constant Measurement of Solids and Liquids," Journal of Electromagnetic Engineering and Science, vol. 22, no. 2, pp. 122-128, Mar. 2022.

  20. Moon-Jeong Lee, Ha-Neul Lee, Ga-Eun Lee, S.-T. Han and Jong-Ryul Yang*, "Concurrent-Mode CMOS Detector IC for Sub-Terahertz Imaging System," Sensors, vol. 22, no. 5, p. 1753, 23 Feb. 2022.

  21. Ah-Jung Jang, In-Seong Lee and Jong-Ryul Yang*, "Vital Signal Detection using Multi-Radar for Reductions in Body Movement Effects," Sensors, vol. 21, no. 21, page 7398, 7 Nov. 2021.​

  22. Jae-Hyun Park and Jong-Ryul Yang*, "​Multiphase Continuous-Wave Doppler Radar With Multiarc Circle Fitting Algorithm for Small Periodic Displacement Measurement," IEEE Transactions on Microwave Theory and Techniques, vol. 69, no. 11, pp. 5135-5144, Nov. 2021.

  23. Ha-Neul Lee, Hyo-Jin Lee, S.-T. Han and Jong-Ryul Yang*, "Highly Sensitive CMOS Plasmon Detector with a Low-Gain Buffer Amplifier for Terahertz Imaging System," Microwave and Optical Technology Letters, vol. 63, no. 10, pp. 2587-2591, Oct. 2021.

  24. Ui-Gyu Choi, Bo-Yoon Yoo, S.-T. Han and Jong-Ryul Yang*, "2.45 GHz Active Isolator based on Asymmetric Coupler," Automatika, vol. 62, no. 3-4, pp. 448-452, 28 Sep. 2021. 

  25. In-Seong Lee, Jae-Hyun Park and Jong-Ryul Yang*, "Detrending Technique for Denoising in CW Radar," Sensors, vol. 21, no. 19, page 6376, 24 Sep. 2021. 

  26. Dong-Jun Shin, Ui-Gyu Choi and Jong-Ryul Yang*, "High-Power V-Band CMOS Frequency Tripler with Efficient Matching Networks," IEEE Microwave and Wireless Components Letters, vol. 31, no. 8, pp. 1020-1022, Aug. 2021.

  27. Ga-Eun Lee, Hyo-Jin Lee, S.-T. Han and Jong-Ryul Yang*, "CMOS Detector using Customized Bolt-Wrench Capacitor on Backend Oxide Layer," IEEE Microwave and Wireless Components Letters, vol. 31, no. 8, pp. 1012-1015, Aug. 2021.

  28. Moon-Jeong Lee, Ha-Neul Lee, Ui-Gyu Choi and Jong-Ryul Yang*, "Multi-level Waveform Generator with Delay Control for Low Distorted Class D Amplifiers," IDEC Journal of Integrated Circuits and Systems, vol. 7, no. 2, Apr. 2021.

  29. Y. I. Jang, Jae Young Sim, Jong-Ryul Yang* and N. K. Kwon*, "The Optimal Selection of Mother Wavelet Function and Decomposition Level for Denoising of DCG Signal," Sensors, vol. 21, no. 5, page 1851, 6 Mar. 2021.

  30. Cheol-Woo Kang, H. Moon* and Jong-Ryul Yang*, "Switched-Biasing Techniques for CMOS Voltage-Controlled Oscillator," Sensors, vol. 21, no. 1, page 316, 5 Jan. 2021.  

  31. Dong-Jun Shin, Ui-Gyu Choi, J. Oh and Jong-Ryul Yang*, "Highly Efficient 5.8-GHz Class E-1 Frequency Doubler Using a Transmission-Line-Based Notch Filter," Microwave and Optical Technology Letters, vol. 63, no. 1, pp. 91-96, Jan. 2021. 

  32. Hyo-Jin Lee, S.-T. Han and Jong-Ryul Yang*, "CMOS Plasmon Detector with Three Different Body-Biasing MOSFET," IEEE Access, vol.8, pp. 215840-215850, Dec. 2020. 

  33. E. Hyun*, Y.-S. Jin, Jae-Hyun Park and Jong-Ryul Yang, "Machine Learning-Based Human Recognition Scheme ​Using a Doppler Radar Sensor for In-Vehicle Applications," Sensors, vol. 20, no. 21, page 6202, Oct. 2020.

  34. Jae-Hyun Park and Jong-Ryul Yang*, "Two-tone Continuous-Wave Doppler Radar Based on Envelope Detection Method," Microwave and Optical Technology Letters, vol. 62, no. 10, pp. 3146-3150, Oct. 2020. 

  35. Jae Young Sim, Jae-Hyun Park and Jong-Ryul Yang*, "Vital-Signs Detector Based on Frequency-Shift Keying Radar," Sensors, vol. 20, no. 19, 5516, Sep. 2020.

  36. S.-T. Han*, D. Kim, J. Kim and Jong-Ryul Yang, "Noise Suppression and Precise Phase Control of a Commercial S-Band Magnetron," IEEE Access, vol. 8, pp. 145881-145886, Aug. 2020.  

  37. J. Kim, Jong-Ryul Yang and J. Oh*, "Reconfigurable Hybrid Matrix-Based Power Divider with Variable Power-Dividing Ratios and Frequencies," IET Electronics Letters, vol. 56, no. 17, pp. 889-891, Aug. 2020. 

  38. Moon-Jeong Lee, Ha-Neul Lee, Hyo-Jin Lee, Ga-Eun Lee, Ju-Hee Son and Jong-Ryul Yang*, "Analysis of the Effects of Differential Integrated Antennas on Voltage Responsivity of Sub-terahertz CMOS Detectors," IDEC Journal of Integrated Circuits and Systems, vol. 6, no. 2, Apr. 2020.

  39. Jae-Hyun Park, Ju-Yeon Kim, Se-Young Jang, Hyun-Jun Ji, Jae Young Sim and Jong-Ryul Yang*, "Short-Range Radar Sensor System Using Continuous Wave Signals," The Journal of Korean Institute of Electromagnetic Engineering and Science, vol 31, no. 2, pp. 143-153, Feb. 2020.

  40. Ui-Gyu Choi, Ho-Yeon Kim, S.-T. Han and Jong-Ryul Yang*, "Measurement Method of Amplitude Ratios and Phase Differences based on Power Detection among Multiple Ports," IEEE Transactions on Instrumentation and Measurement, vol. 68, no. 12, pp. 4615-4617, Dec. 2019.

  41. J. Oh and Jong-Ryul Yang*, "5-MHz Pseudo-differential Current-mode CMOS Relaxation VCO with Temperature Stability of 41.8 ppm/°C," Journal of Semiconductor Technology and Science, vol. 19, no. 6, pp. 608-612, Dec. 2019.

  42. Cheol-Ho Choi, Jae-Hyun Park, Ha-Neul Lee, and Jong-Ryul Yang*, "Heartbeat Detection using a Doppler Radar Sensor based on the Scaling Function of Wavelet Transform," Microwave and Optical Technology Letters, vol. 61, no. 7, pp. 1792-1796, Jul. 2019. 

  43. Jae-Hyun Park, Yeo-Jin Jeong, Ga-Eun Lee, J. Oh*, and Jong-Ryul Yang*, "915-MHz Continuous-Wave Doppler Radar Sensor for Detection of Vital Signs," Electronics, vol. 8, no. 5, page 561, May. 2019. 

  44. Ju-Yeon Kim, Jae-Hyun Park, Se-Young Jang, and Jong-Ryul Yang*, "Peak Detection Algorithm for Vital Signs Detection Using Doppler Radar Sensors," Sensors, vol. 19, no. 7, page 1575, Apr. 2019.

  45. Ju-Hee Son and Jong-Ryul Yang*, "Quasi-Static Analysis Based on an Equivalent Circuit Model for a CMOS Terahertz Plasmon Detector in the Subthreshold Region," Sensors, vol. 19, no. 7, page 1508, Mar. 2019. 

  46. Bo-Yoon Yoo, Jae-Hyun Park, and Jong-Ryul Yang*, "Quasi-Circulator Using an Asymmetric Coupler for Tx Leakage Cancellation," Electronics, vol. 7, no. 9, page 173, Sep. 2018.

  47. Ui-Gyu Choi and Jong-Ryul Yang*, "A 120 W Class-E Power Module with an Adaptive Power Combiner for a 6.78 MHz Wireless Power Transfer System," Energies, vol. 11, no. 8, page 2083, Aug. 2018.

  48. S. Park, J.-Y. Lee, J.-Y. Lee, Jong-Ryul Yang*, and D. Baek*, "25-34 GHz Single-Pole, Double-Throw CMOS Switches for a Ka-Band Phased-Array Transceiver," Applied Sciences, vol. 8, no. 2, page 196, Jan. 2018.

  49. Jong-Ryul Yang, "A Class E Power Oscillator for 6.78-MHz Wireless Power Transfer System," Journal of Electrical Engineering and Technology, vol. 13, no. 1, pages 220-225, Jan. 2018.

  50. Jong-Ryul Yang, S.-T. Han, and D.-H. Baek*, "Differential CMOS Sub-Terahertz Detector with Subthreshold Amplifier," Sensors, vol. 17, no. 9, page 2069, Sep. 2017.

  51. Jong-Ryul Yang, "Gate Driver Integrated Circuit with Breakdown Protection for Switch-mode Power Amplifiers," Automatika, vol. 57, no. 2, pp. 506-513, Oct. 2016.

  52. J. H. Kim, S. Lee, M. Wajahat, H. Jeong, W. S. Chang, H. J. Jeong, Jong-Ryul Yang, J. T. Kim and S. K. Seol*, "Three-Dimensional Printing of Highly Conductive Carbon Nanotube Microarchitectures with Fluid Ink," ACS Nano, vol. 10, no. 9, pp. 8879-8887, Sep. 2016.

  53. M. W. Ryu, J. S. Lee, K. S. Kim, K. Park, Jong-Ryul Yang, S.-T. Han and K. R. Kim*, "High-Performance Plasmonic THz Detector Based on Asymmetric FET with Vertically Integrated Antenna in CMOS Technology," IEEE Transactions on Electron Devices, vol. 63, no. 4, pp. 1742-1748, Apr. 2016.

  54. Jong-Ryul Yang, W.-J. Lee and S.-T. Han*, "Signal-Conditioning Block of a 1 x 200 CMOS Detector Array for a Terahertz Real-Time Imaging System," Sensors, vol. 16, no. 3, page 319, Mar. 2016.

  55. Jong-Ryul Yang, W.-J. Lee, M.-W. Ryu, K. R. Kim and S.-T. Han*, "Parasitic Antenna Effect in Terahertz Plasmon Detector Array for Real-time Imaging System," Japanese Journal of Applied Physics, vol. 54, no. 10, page 102001, Sep. 2015.

  56. M. W. Ryu, K. S. Kim, J. S. Lee, K. Park, Jong-Ryul Yang, S.-T. Han and K. R. Kim*, "Performance Enhancement of Plasmonic Sub-Terahertz Detector Based on Antenna Integrated Low-Impedance Silicon MOSFET," IEEE Electron Device Letters, vol. 36, no. 3, pp. 220-222, Mar. 2015.

  57. J. H. Kim, W. S. Chang, D. Kim, Jong Ryul Yang, J. T. Han, G.-W. Lee, J. T. Kim and S. K. Seol*, "3D Printing of Reduced Graphene Oxide Nanowires," Advanced Materials, vol. 27, no. 1, pp. 157-161, Jan. 2015.

  58. Jong-Ryul Yang* and S. Hong, "A 24-GHz Radar Sensor with a Six-port Network for Short-Range Detection," Microwave and Optical Technology Letters, vol. 56, no. 11, pp. 2634-2637, Nov. 2014.

  59. Jong-Ryul Yang*, J.-W. Kim and Y.-J. Park, "Class E Power Amplifiers using High-Q Inductors for Loosely Coupled Wireless Power Transfer System," Journal of Electrical Engineering and Technology, vol. 9, no. 2, pp. 569-575, Mar. 2014.

  60. Jong-Ryul Yang, "Measurement of Amplitude and Phase Differences Between Two RF Signals by Using Signal Power Detection," IEEE Microwave and Wireless Components Letters, vol. 24, no. 3, pp. 206-208, Mar. 2014.

  61. Jong-Ryul Yang*, H.-C. Son and Y.-J. Park, "A Class E Power Amplifier with Coupling Coils for a Wireless Power Transfer System," Progress In Electromagnetics Research C, vol. 35, pp. 13-22, Jan. 2013.

  62. Jong-Ryul Yang, S. Hong and D.-W. Kim*, "A Distance-Compensated Radar Sensor with a Six-port Network for Remote Distinction of Objects with Different Dielectric Constants," Journal of Electromagnetic Waves and Applications, vol. 24, no. 11-12, pp. 1429-1437, Aug. 2010. 

  63. Jong-Ryul Yang*, D.-W. Kim and S. Hong, "Quasi-Circulator for Effective Cancellation of Transmitter Leakage Signals in Monostatic Six-port Radar," IET Electronics Letters, vol. 45, no. 21, Oct. 2009. 

  64. Jong-Ryul Yang*, D.-W. Kim and S. Hong, "A 24-GHz Active SPST MMIC Switch with InGaP/GaAs HBTS," Microwave and Optical Technology Letters, vol. 50, no. 8, pp. 2155-2158, Aug. 2008.

  65. Jong-Ryul Yang*, D.-W. Kim and S. Hong, "A Calibration Method of a Range Finder with a Six-port Network," IEEE Microwave and Wireless Components Letters, vol. 17, no. 7, pp. 549-551, Jul. 2007.

  66. J. H. Oum*, U. H. Lee, Y. H. Kang, Jong-Ryul Yang and S. Hong, "Quantum-Well Infrared Phototransistor with pHEMT Structure," IEEE Electron Device Letters, vol. 26, no. 8, pp. 527-529, Aug. 2005.

  67. U. H. Lee*, Y. H. Kang, J. H. Oum, Jong-Ryul Yang, S. Hong, S. J. Lee and S. K. Noh, "Theoretical Optimization of a Vertical Quantum Dot Infrared Photodetector Structure," The Journal of Korean Physical Society, vol. 45, no. 2, pp. 529-533, Aug. 2004.

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