All Stories

  1. Wide-Stopband and High Selectivity Step Impedance Resonator Bandpass Filter Using T-network and Antiparallel Coupled Line

    Article • IET Microwaves Antennas & Propagation, May 2019, the Institution of Engineering and Technology (the IET)

    Dr PHIRUN KIM, Professor Yongchae Jeong

  2. An Impedance Matching Bandpass Filter with a Controllable Spurious Frequency Based on half-wavelength Stepped Impedance Resonator

    Article • IET Microwaves Antennas & Propagation, June 2018, the Institution of Engineering and Technology (the IET)

    Professor Yongchae Jeong, Dr PHIRUN KIM

  3. Controllable and wide spurious suppression power divider with a bandpass-filtering and high isolation

    Article • Microwave and Optical Technology Letters, June 2018, Wiley

    Professor Yongchae Jeong, Dr PHIRUN KIM

  4. Unequal termination impedance parallel-coupled lines band-pass filter with arbitrary image impedance

    Article • Journal of Electromagnetic Waves and Applications, December 2017, Taylor & Francis

    Dr PHIRUN KIM, Professor Yongchae Jeong

  5. A compact ultra-wideband bandpass filter with high return loss characteristic

    Article • December 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr PHIRUN KIM

  6. an ultra-wideband bandpass filter with high return loss and controllable notch band

    Article • Microwave and Optical Technology Letters, September 2016, Wiley

    Dr PHIRUN KIM

  7. A design of phase shifter with constant insertion loss

    Article • August 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr PHIRUN KIM

  8. Unequal termination branch-line balun with high-isolation wideband characteristics

    Article • Microwave and Optical Technology Letters, May 2016, Wiley

    Dr PHIRUN KIM, Professor Yongchae Jeong

  9. A design of unequal termination impedance power divider with filtering and out-of-band suppression characteristics

    Article • September 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr PHIRUN KIM

  10. Ultra-High Transforming Ratio Coupled Line Impedance Transformer With Bandpass Response

    Article • IEEE Microwave and Wireless Components Letters, July 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr PHIRUN KIM

  11. High efficiency power amplifier with frequency band selective matching networks

    Article • Microwave and Optical Technology Letters, June 2015, Wiley

    Professor Yongchae Jeong, Dr PHIRUN KIM

  12. Enhancement impedance transforming ratios of coupled line impedance transformer with wide out-of-band suppression characteristics

    Article • Microwave and Optical Technology Letters, April 2015, Wiley

    Dr PHIRUN KIM, Professor Yongchae Jeong

  13. Analysis and design of a branch-line balun with high-isolation wideband characteristics

    Article • Microwave and Optical Technology Letters, March 2015, Wiley

    Dr PHIRUN KIM, Professor Yongchae Jeong

  14. High frequency-selectivity impedance transformer

    Article • January 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr PHIRUN KIM

  15. Coupled line negative group delay circuits with very low signal attenuation and multiple-poles characteristics

    Article • October 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr PHIRUN KIM

  16. Wideband impedance transformer with out-of-band suppression characteristics

    Article • Microwave and Optical Technology Letters, August 2014, Wiley

    Dr PHIRUN KIM

  17. Compact negative group delay circuit using defected ground structure

    Article • November 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr PHIRUN KIM

  18. A DUAL-BAND RF ENERGY HARVESTING USING FREQUENCY LIMITED DUAL-BAND IMPEDANCE MATCHING

    Article • Progress In Electromagnetics Research, January 2013, EMW Publishing

    Dr PHIRUN KIM

  19. Dual-mode bandpass filter with independently tunable center frequency and bandwidth

    Article • November 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr PHIRUN KIM

  20. Design of high efficiency RF-DC conversion circuit using novel termination networks for RF energy harvesting system

    Article • Microwave and Optical Technology Letters, July 2012, Wiley

    Dr PHIRUN KIM

  21. A Design of IQ Modulator for Direct Carrier Modulation Systems

    Article • The Journal of Korean Institute of Electromagnetic Engineering and Science, September 2011, Korean Institute of Electromagnetic Engineering and Science

    Dr PHIRUN KIM