International Journal

[94]  S. -H. Kim, Y. -D. Kim, T. T. Le and T. -Y. Yun, "Wideband Circularly Polarized Slot Antenna Using a Square-Ring Notch and a Nonuniform Metasurface," Applied Sciences, vol. 16, no. 2, Art. no. 634, 2026. Link

[93]  T. T. Le, Y. -D. Kim and T. -Y. Yun, "A Broadband Quad-Mode Dual-Band Dual-Sense Circularly Polarized Series-Fed Array Antenna for Wearable Applications," IEEE Antennas and Wireless Propagation Letters, vol. 24, no. 8, pp. 2247-2251, Aug. 2025. Link

[92]  P. B. T. Huynh, G. -S. Lee, J. -Y. Park and T. -Y. Yun, "An Inductive Loading Simultaneous Noise and Input Matching Technique With Current Reuse for Low-Power LNA," IEEE Journal of Solid-State Circuits, vol. 60, no. 7, pp. 2461-2472, July 2025. Link

[91]  T. Tuan Le, Y. -D. Kim and T. -Y. Yun, "Broadband Dual-Sense Circular-Polarization Reconfigurable Metasurface Antenna for Wearable Applications," IEEE Access, vol. 13, pp. 130138-130146, July 2025. Link

[90]  Y.-D. Kim, T.T. Le, T.-Y. Yun, "An Enhanced Circularly Polarized Textile Antenna Using a Metasurface and Slot-Patterned Ground for Off-Body Communications," Micromachines, Vol. 16, No. 799, pp. 1-15, July 2025. Link

[89]  G.-S. Lee, P. B. T. Huynh, J.-Y. Park, and T.-Y. Yun, "High-Q LNA With a VCO for Small Calibration Frequency Errors," Microwave and Optical Technology Letters, Vol. 66, No. 12, pp. e70057, Dec. 2024. Link

[88]  T. Tuan Le, Y. -D. Kim and T. -Y. Yun, "Bandwidth-Enhanced Circularly Polarized All-Textile Wearable Antenna Using an LP-to-CP Metasurface," IEEE Access, vol. 12, pp. 173749-173757, Nov. 2024. Link

[87]  T. T. Le, Y. -D. Kim and T. -Y. Yun, "All-Textile Broadband Circularly-Polarized 2 × 2 Array Antenna Based on Metasurface," IEEE Access, vol. 12, pp. 16673-16681, Jan. 2024. Link

[86]  Chang-Woo Lim, Jun-Young Park, Ji-Young Lee, Moon Soo Park, and Tae-Yeoul Yun, “A Wide-Dynamic-Range Optical Receiver Using an Input Overload Compensation Circuit,” IEEE Photonics Technology Letters, Vol. 36, No. 1, pp. 27-30, Jan. 2024. Link

[85]  Tu Tuan Le, Yong-Deok Kim, and Tae-Yeoul Yun, “All-Textile Enhanced-Bandwidth Polarization-Conversion Antenna Using a Nonuniform Metasurface,” IEEE Antennas and Wireless Propagation Letters, Vol. 22, No. 10, pp. 2432-2436, Oct. 2023. Link

[84]  C. -W. Lim, J. -Y. Lee, M. -G. Kim and T. -Y. Yun, "Noise-Reduced and PVT-Robust Double-Balanced CMOS Mixer Using Common-Mode Feedback," IEEE Access, vol. 11, pp. 64713-64724, June 2023. Link

[83]  T. T. Le, Y. -D. Kim and T. -Y. Yun, "Wearable Pattern-Diversity Dual-Polarized Button Antenna for Versatile On-/Off-Body Communications," IEEE Access, vol. 10, pp. 98700-98711, Sept. 2022. Link

[82]  S. -H. Pang, Y. Kim and T. -Y. Yun, "High-Gain, Low-Power, and Low-Noise CMOS Mixer Using Current-Reused Bleeding Amplification," IEEE Microwave and Wireless Components Letters, vol. 32, no. 5, pp. 418-421, May 2022. Link

[81]  P. B. T. Huynh, J. -H. Kim and T. -Y. Yun, "Dual-Resistive Feedback Wideband LNA for Noise Cancellation and Robust Linearization," IEEE Transactions on Microwave Theory and Techniques, vol. 70, no. 4, pp. 2224-2235, Apr. 2022. Link

[80]  Tu Tuan Le, Yong-Deok Kim, Tae-Yeoul Yun, "A Triple-Band Dual-Open-Ring High-Gain High-Efficiency Antenna for Wearable Applications," IEEE Access, vol. 9, pp. 118435-118442, Sept. 2021. Link

[79]  Tu Tuan Le, Tae-Yeoul Yun, "Wearable Dual-Band High-Gain Low-SAR Antenna for Off-Body Communication," IEEE Antennas and Wireless Propagation Letters, vol. 20, no. 7, pp. 1175-1179, July 2021. Link

[78]  Chang-Woo Lim, Tae-Yeoul Yun, "Gm- and Swing-Enhanced Colpitts VCO by Optimization of Capacitance Ratio," IEEE Microwave and Wireless Components Letters, vol. 30, no. 10, pp. 977-980, Oct. 2020. Link

[77]  Tu Tuan Le, Tae-Yeoul Yun, "Miniaturization of a Dual-Band Wearable Antenna for WBAN Applications", IEEE Antennas and Wireless Propagation Letters, vol. 19, pp. 1452-1456, Aug. 2020. Link

[76]  Tu Tuan Le, Han-Young Park, and Tae-Yeoul Yun, " Simple reconfigurable circularly polarized antenna at three band", Sensors, Vol. 19, No. 10, May. 2019. Link

[75]  Tu Tuan Le, Tae-Yeoul Yun, "A quad-band dual-sense circularly-polarized square-ring antenna for multi-functional wireless applications", IEEE Access, Vol. 7, pp. 149634-149640, Oct. 2019. Link

[74]  Jun-Young Park, Ji-Young Lee (A), Cheong-Ki Yeo, and Tae-Yeoul Yun, “Analysis and Optimization of a Resistive-Feedback Inverter LNA,” Microwave and Optical Technology Letter, Vol. 60, No. 5, pp.1143-1151, May. 2018. Link

[73]  Chang-Woo Lim and Hong-Yeoul Noh and Tae-Yeoul Yun, “Small VCO-Gain Variation Adding a Bias-Shifted Inversion-Mode MOS Varactor,” IEEE Microw. and Wireless Components Lett., vol. 27, no. 4, pp. 395-397, Apr. 2017. Link

[72]  J.-Y. Lee and T.-Y. Yun, “Low-flicker-noise and high-gain mixer using a dynamic current-bleeding technique,” IEEE Microw. and Wireless Components Lett., vol. 27, no. 8, pp. 733-735, Aug. 2017. Link

[71]  J.-Y. Lee, J.-Y. Park, and T.-Y. Yun, “Flicker noise improved CMOS mixer using feedback current bleeding,” IEEE Microw. and Wireless Components Lett., vol. 27, no. 8, pp. 730-732, Aug. 2017. Link

[70]  Ji-Young Lee and Tae-Yeoul Yun, “High-Gain Mixer Using Cascode Current Bleeding and gm-Boosting techniques,” Microwave and Optical Technology Letter, vol. 59, no. 1, pp. 1-6 Jan. 2017. Link

[69]  Ji-Young Lee and Tae-Yeoul Yun, “A Dynamic Current-Bleeding Technique for a Low-Noise and High-Gain CMOS Mixer,” Microwave and Optical Technology Letter, vol. 59, no. 6, pp. 1267-1271, June. 2017. Link

[68]  Jun-YoungPark, Ji-Young Lee (A), and Tae-Yeoul Yun, “High-Linearity Drive Amplifier Using Active Local Feedback,” IEEE Microwave and Wireless Components Lett., Vol. 26,No. 8, pp.613-615, Aug. 2016. Link

[67]  Chang-Hun Lee, Changwoo Lim, and Tae-Yeoul Yun, "Swing and Phase-Noise Enhanced VCO With Capacitive-Division Dynamic-Threshold MOS," IEEE Microwave and Wireless Components Lett., Vol. 26, No. 3, pp.219-221, Mar. 2016. Link

[66]  Gyeong-Ho Kim and Tae-Yeoul Yun, "Small Wideband Monopole Antenna With a Distributed Inductive Strip for LTE/GSM/UMTS," IEEE Antennas and Wireless Propagation Lett., Vol. 14, pp.1677-1680, Aug. 2015. Link

[65]  Dong-Hyun Seo, Ji-Young Lee(B), and Tae-Yeoul Yun, "Active and Passive Combined Mixer for Low Flicker Noise and Low dc Offset," IEEE Microwave and Wireless Components Lett.,Vol. 25, No. 7, pp.463-465, July 2015. Link

[64]  Zhe-Jun Jin and Tae-Yeoul Yun, “Compact Wideband Open-End Slot Antenna with Inherent Impedance Matching,” IEEE Antennas and Wireless Propagation Lett., Vol. 13, pp.1385-1388, July 15, 2014. Link

[63]  Zhe-Jun Jin and Tae-Yeoul Yun, “Compact Dual-Band Slot Antenna with Capacitor Loading,” Microwave and Optical Technology Lett., Vol. 56, No. 7, pp.1653-1658, July 2014. Link

[62]  Ho-Jun Chang and Tae-Yeoul Yun, “CMOS QVCO with Current-Reuse, Bottom-Series Coupling, and Forward Body Biasing Techniques,” IEEE. Microwave and Wireless Components Lett., Vol. 24, No. 9, pp.608-610, Sept. 2014. Link

[61]  Myoung-Gyun Kim and Tae-Yeoul Yun, “Analysis and Design of Feedforward Linearity-Improved Mixer Using Inductive Source Degeneration,” IEEE Trans. Microwave Theory and Tech., Vol. 62, No. 2, pp.323-331, Feb. 2014. Link

[60]  Gyeong-Ho Kim and Tae-Yeoul Yun, “Compact Ultra-Wideband Monopole Antenna with an Inverted L-Shaped Coupled Strip," IEEE Antennas and Wireless Propagation Letters, Vol. 12, No. 1, pp.1291-1294, Dec. 2013. Link

[59]  Ji-Young Lee (B), Yun-Mo Kang, Sang-Kon Lee, and Tae-Yeoul Yun, “High-Gain Low-Noise Ku-Band Mixer with Inverting Transconductance Technique," IET Microwaves, Antennas and Propagation, Vol. 7, No. 2, pp141-145, Jan. 2013. Link

[58]  Jong-Hyuk Lim, Chang-Wook Song, Zhe-Jun Jin, and Tae-Yeoul Yun, “Frequency Reconfigurable Planar Inverted-F Antenna Using Switchable Radiator and Capacitive Load," IET Microwaves, Antennas and Propagation, Vol. 7, No. 6, pp430-435, April 2013. Link

[57]  Ji-Young Lee (A) and Tae-Yeoul Yun, “Low Voltage-Low Power Full-Band UWB Receiver Front-End," Microwave and Optical Technology Letter, Vol. 55, No. 2, pp.278-281, Feb. 2013. Link

[56]  Sang-Hyeong Kim, Zhe-Jun Jin, Yoon-Byung Chae, and Tae-Yeoul Yun, “Small Internal Antenna Using Multi-Band, Wide-Band, and High-Isolation MIMO techniques,” ETRI Journal, Vol. 35, No. 1, pp. 51-57, Feb. 2013. Link

[55]  Jong-Hyuk Lim, Zhe-Jun Jin, Chang-Wook Song, and Tae-Yeoul Yun, “Simultaneous Frequency and Isolation Reconfigurable MIMO PIFA Using PIN Diodes,” IEEE Trans. Antennas and Propag., Vol. 60, No. 12, pp.5939-5946, Dec. 2012. Link

[54]  Ho-Jun Chang, Ki-Won Kim, Jin-Hong Park, and Tae-Yeoul Yun, “Dual-Band Low-Phase-Noise LC-QVCO Using Series Coupling and Switched Biasing Techniques” Analog I. C. and Signal Processing, Vol. 73, No. 3, pp.955-960, Dec. 2012. Link

[53]  Ho-Jun Chang, SeungWoon Choi, and Tae-Yeoul Yun, “K-Band CMOS VCO Using a Wide Tuning Range Varactor,” Microwave and Optical Technology Letter, Vol. 54, No. 12, pp.2751-2754, Dec. 2012. Link

[52]  Myoung-Gyun Kim, Ji-Young Lee (B) and Tae-Yeoul Yun, “Low-Noise and High-Gain Mixer Combining Switched-Biasing and Current-Bleeding Techniques,” Electronics Letters, Vol. 48, No. 23, pp. 1476-1478, Nov. 2012. Link

[51]  J. H. Lim, Y. B. Chae, Z. J. Jin, and T. Y. Yun, “Patterned Helical DVB-T Antenna with an Open Stub and a Matching Network,” IEEE Antennas and Wireless Propagation Letters, Vol. 11, pp.736-739, Aug. 2012. Link

[50]  Myoung-Gyun Kim, Hee-Woo An, Yun-Mo Kang, Ji-Young Lee (B), and Tae-Yeoul Yun, “A Low-Voltage, Low-Power, and Low-Noise UWB Mixer Using Bulk-Injection and Switched Biasing Techniques,” IEEE Trans. Microwave Theory and Tech., Vol. 60, No. 8, pp.2486-2493, Aug. 2012. Link

[49]  Ho-Jun Chang, Sung-Jun Kim, Chang-Woo Lim, and Tae-Yeoul Yun, “Wide Tuning Range CMOS Millimeter-Wave VCO Using Resistors-Added MOSFET Varactor,” Microwave and Optical Technology Letter, Vol. 54, No. 8, pp.1777-1783, Aug. 2012. Link

[48]  Zhe-Jun Jin, Jong-Hyuk Lim, and Tae-Yeoul Yun, “Frequency Reconfigurable MIMO Antenna with High Isolation,” IET Microwaves, Antennas and Propagation, Vol. 6, No. 10, pp.1095-1101, July 2012. Link

[47]  Ji-Young Lee (A), Hyun-Kyu Park, Ho-Jun Chang, and Tae-Yeoul Yun, “Low-Power UWB LNA with Common-Gate and Current-Reuse Techniques,” IET Microwaves, Antennas and Propagation, Vol. 6, No. 7, pp.793-799, July 2012. Link

[46]  Yoo-Jun Jeong, Young-Min Kim, Ho-Jun Chang and Tae-Yeoul Yun, “Low-Power CMOS VCO with a Low-Current, High-Q Active Inductor,” IET Microwaves, Antennas & Propagation, vol.6, no.7, pp.788-792, July 2012. Link

[45]  Jin-Ho Kim, Yoon-Byung Chae, Jong-Hyuk Lim, and Tae-Yeoul Yun, “Printed Internal Antenna for Mobile Broadcasting (DVB-H/T-DMB) and Communications (GSM900),” IET Microwaves, Antennas and Propagation, Vol. 6, No. 6, pp.680-684, June 2012. Link

[44]  Myoung-Gyun Kim, Byoung-Hwa Lee, and Tae-Yeoul Yun, “Equivalent-Circuit Model for High-Capacitance MLCC Based on Transmission-Line Theory,” IEEE Trans. Components, Packaging and Manufacturing Technology, Vol. 2, No. 6, pp.1012-1020, June 2012. Link

[43]  Jong-Hyuk Lim and Tae-Yeoul Yun, “Planar DVB-T Antenna Using a Patterned Helical Line and Matching Circuit,” ETRI Journal, Vol. 34, No. 3, pp.454-457, June 2012. Link

[42]  Zhe-Jun Jin, Jong-Hyuk Lim, and Tae-Yeoul Yun, “Small-Size and High-Isolation MIMO Antenna for WLAN,” ETRI Journal, Vol. 34, No. 1, pp.114-117, Feb. 2012. Link

[41]  Jung-Hyun Ham, Ji-Young Lee, and Tae-Yeoul Yun, “21-dB gain ultra-wideband complementary metal-oxide semiconductor low-noise amplifier with current-reuse technique,” IET Microwaves, Antennas and Propagation, Vol. 5, No. 12, pp.1495-1501, Sept. 2011. Link

[40]  Hyuk Sun, Zhe-Jun Jin, Myoung-Gyun Kim, Chan-Seo Park, and Tae-Yeoul Yun, "Equivalent-Cricuit Modeling for Multi-layer Capacitors Based on Coupled Transmission-Line Theory," IEEE Trans. Components, Packaging and Manufacturing Technology, Vol. 1, No.5, pp.731-741, May 2011. Link

[39]  Ho-Jun Chang, Kun-Man Park, Jung-Hyun Ham, and Tae-Yeoul Yun, "High-gain Reconfigurable LNA Using Optimized Q-factor Inductor and Switched Capacitor," Microwave and Optical Technology Letter, Vol. 53, No. 5, pp.1069-1074, May 2011. Link

[38]  J.Kim, C. Yang, T. Yun, and C. Jung, "Multimode Multiband (VHF/UHF/L/802.11a/b) Antennas for Broadcasting and Telecommunication Services, " IEEE Antenna and Wireless Propagation Letters, Vol. 10, pp.41-44, Mar. 2011. Link

[37]  Ji-Young Lee, Jung-Hyun Ham, Young-Sop Lee, and Tae-Yeoul Yun, “CMOS LNA for Full-Band UWB Systems Using a Simple Wide Input Matching Network,” IET Microwaves, Antennas and Propagation, Vol. 4, No. 12, pp.2155-2159, Dec. 2010. Link

[36]  Jong-Hyuk Lim, Gyu-Tae Back, Young-Il Ko, Chang-Wook Song, and Tae-Yeoul Yun, “A Reconfigurable PIFA Using a Switchable PIN-Diode and a Fine-Tuning Varactor for USPCS/WCDMA/m-WiMAX/WLAN,” IEEE Trans. Antennas and Propag., Vol. 58, No. 7, pp.2404-2411, July 2010. Link

[35]  Ki-Won Kim, Ho-Jun Chang, Young-Min Kim, and Tae-Yeoul Yun, “A 5.8 GHz Low-Phase-Noise LC-QVCO Using Splitting Switched Biasing Technique,” IEEE Microwave and Wireless Components Lett., Vo. 20, No. 6, pp.337-339, June 2010. Link

[34]  Jong-Hyuk Lim, Gyu-Tae Back, and Tae-Yeoul Yun, “Polarization-Diversity Cross-Shaped Patch Antenna for Satellite-DMB Systems,” ETRI Journal, Vol. 32, No. 2, pp.312-318, April 2010. Link

[33]  Jong-Ha Kim, Hee-Woo An, and Tae-Yeoul Yun, “A Low-Noise WLAN Mixer Using Switched Biasing Technique,” IEEE Microwave and Wireless Components Lett., Vol. 19, No. 10, pp.650-652, Oct., 2009. Link

[32]  Seung-Bok Byun, Gyu-Tae Back, Jong-Hyuk Lim, and Tae-Yeoul Yun, “A Multi-band Planar Monopole Antenna with Slits and a Stub,” IEICE Trans. Communications, Vol.E92-B, No.6, pp.2349-2351, June 2009. Link

[31]  Jeong-Bae Seo, Jong-Ha Kim, Hyuk Sun, and Tae-Yeoul Yun, “A Low-Power and High-Gain Mixer for UWB Systems” IEEE Microwave and Wireless Components Lett., Vol. 18, No. 12, pp.803-805, Dec. 2008. Link

[30]  Byung-Hyun Choi, Zhe-Jun Jin, Myoung-Gyun Kim, Yoo-Sun Ham, and Tae-Yeoul Yun,“ An Equivalent-Circuit Model Based on Mathematical Analysis for Multilayer Chip Inductors,” IET Microwaves, Antennas and Propagation, Vol.2, No.4, pp.378-382, June 2008. Link

[29]  Seung-Bok Byun, Jeong-An Lee, Jong-Hyuk Lim, and Tae-Yeoul Yun, “Frequency-Diversity Patch Slit Antenna for WIBRO and DMB,” IEICE Trans. Communications, Vol.E91-B, No.1, pp.385-387, Jan. 2008. Link

[28]  Seung-Bok Byun, Jeong-An Lee, Jong-Hyuk Lim, and Tae-Yeoul Yun, “Reconfigurable ground-slotted patch antenna using PIN-diode switching,” ETRI Journal, Vol. 29, No. 6, pp.832-834, Dec. 2007. Link

[27]  Sung-Soo Kim, Young-Sup Lee, and Tae-Yeoul Yun, “High-Gain and Wideband CMOS Low Noise Amplifier with Two-Stage Cascode and Simplified Chebyshev Filter,” ETRI Journal, Vol.29, No.5, pp.670-672, Oct. 2007. Link

[26]  Goo-Young Jung and Tae-Yeoul Yun, “Sub-Harmonic Quadrature Mixer Using APDPs for UWB Systems,” Microwave Journal, Vol. 50, No. 10, pp.126-134, Oct. 2007. Link

[25]  Goo-Young Jung, Jae-Hoon Shin, and Tae-Yeoul Yun, “A Low-Noise UWB CMOS Mixer using Current Bleeding and Resonant Inductor Techniques,” Microwave and Optical Technology Letter,Vol. 49, No.7, pp.1595-1597, July 2007. Link

[24]  Jeong-An Lee, Seung-Bok Byun, Jong-Hyuk Lim, and Tae-Yeoul Yun, “Reconfigurable Antenna for Wideband Code Division Multiple Access and Korean Satellite Digital Multimedia Broadcasting Controlled by PIN-diodes,” Microwave and Optical Technology Letter, Vol. 49, No. 6, pp.1334-1337, June 2007. Link

[23]  Ji-Hak Jung, Tae-Yeoul Yun, Jae-Hoon Choi, and Hoon-Tae Kim, “A Wideband and Low Noise CMOS Amplifier for UWB Receivers,” Microwave and Optical Technology Letters, Vol.49, No.4, pp.749-752, April 2007. Link

[22]  S.-G. Kim, T.-Y. Yun, and K. Chang, “Two-dimensional beam-scanning using tapered slot antennas and piezoelectric transducers,” Int. Journal of RF and Microwave Computer-Aided Engineering, Vol.16, No.4, pp.331-337, July 2006. Link

[21]  Kyung-Ho Chung, Yong-Sik Nam, Tae-Yeoul Yun, and Jae-Hoon Choi, "Reconfigurable microstrip patch antenna with switchable polarization" ETRI Journal, vol.28, no.3, pp.379-382, June 2006. Link

[20]  Ji-Hak Jung, Tae-Yeoul Yun, and Jae-Hoon Choi, “Ultra-wideband low noise amplifier using a cascode feedback topology,” Microwave and Optical Technology Letters, Vol. 48, No.6, pp.1102-1104, June 2006. Link

[19]  K.-H. Chung, Y.-S. Nam, T.-Y. Yun, and J.-H. Choi, “Reconfigurable microstrip patch antenna having frequency and polarization diversities functions” Microwave and Optical Technology Letters, Vol. 47, No. 6, pp.605-607, Dec. 2005. Link

[18]  Dae-Uk Lee, J.-Y. Jin, T.-Y. Yun, T.-W. Kim, H.-S. Lee, M.-S. Kwon, and J.-Y. Lee, “Atomic arrangements of a CuAu-I type ordered structure in strained InxGa1-xAs/InyAl1-yAs multiple quantum wells,” Journal of Materials Science, Vol.40, No.14, pp.3843-3846, July 2005. Link

[17]  J.-P. Kim, T.-Y. Yun, J.-M. Kim, and J.-H. Choi, “Design of an Ultra Wideband Printed Monopole Antenna Using FDTD and Genetic Algorithm,” IEEE Microwave and Wireless Components Lett., Vol.15, No.6, pp.395-397, June 2005. Link

[16]  H.-C. Lee, I.-K. Kim, and T.-Y. Yun, “Collision-avoidance radar-system antenna for a smart UAV,” Microwave and Optical Tech. Lett., vol.44, No.6, pp.498-501, March 2005. Link

[15]  K.-H. Chung, T.-Y. Yun, and J.-H. Choi, “Wideband CPW-fed monopole antenna with parasitic elements and slots,” IEE Electron. Lett., vol. 40, no. 17, pp.1038-1040, Aug. 2004. Link

[14]  S.-G. Kim, T.-Y. Yun, and K. Chang, “Time-Delay Phase Shifter Controlled by Piezoelectric Transducer on Coplanar Waveguide,” IEEE Microwave and Wireless Components Lett., vol.13, no. 1, pp.19-20, Jan. 2003. Link

[13]  T.-Y. Yun and K. Chang, “Piezoelectric transducer controlled tunable microwave circuits,” IEEE Trans. Microwave Theory and Tech., vol 50, no. 5, pp.1303-1310, May. 2002. Link

[12]  T.-Y. Yun, C. Wang, P. Zepeda, C. Rodenbeck, M. Coutant, M.-Y. Li, and K. Chang, “A 10 to 21 GHz low-cost, multi-frequency, and full-duplex phased array antenna system,” IEEE Trans.Antennas and Propag., vol. 50, no.5, pp 641-650, May 2002. Link

[11]  K. Chang, M.-Y. Li, T.-Y. Yun, and C.T.Rodenbeck, “Novel low cost beam steering techniques,” IEEE Trans. Antennas and Propag., vol. 50, no. 5, pp 618-627, May 2002. Link

[10]  T.-Y. Yun and K. Chang, “Analysis and optimization of a phase shifter controlled by piezoelectric transducer,” IEEE Trans. Microwave Theory and Tech., vol 50, no. 1, pp.105-111, Jan. 2002. Link

[9]  T.-Y. Yun and K. Chang, “A low-cost 8 to 26.5 GHz phased array antenna using a piezoelectric transducer controlled phase shifter,” IEEE Trans. Antennas and Propag., vol. 49, no. 9, pp. 1290-1298, Sept. 2001. Link

[8]  T.-Y. Yun and K. Chang, “Uniplanar one-dimensional photonic bandgap structures and resonators,” IEEE Trans. Microwave Theory and Tech., vol 49, no. 3, pp.549-553, Mar. 2001. Link

[7]  T.-Y. Yun and K. Chang, “A low loss time-delay phase shifter controlled by piezoelectric transducer to perturb microstrip line,” IEEE Microwave and Guided Wave Lett., Vol. 10, No.3, pp. 96-98, Mar. 2000. Link

[6]  G. David, T. Yun, J. Whitaker, et al., “Absolute potential measurements inside microwave digital ICs using a micromachined photoconductive sampling probe,” IEEE Trans.Microwave Theory and Tech., Vol. 46,No.12, pp.2330-2337, Dec. 1998. Link

[5]  T. Y. Yun, M. S. Park, J. H. Han, I. Watanabe, and K. Makita, “10 Gbit/s high sensitivity and wide dynamic range APD-HEMT optical receiver," IEEE Photonics Technol. Lett., Vol.8, No.9, pp.1232-1234, Sep. 1996. Link

[4]  M. S. Park and T. Y. Yun, “First BER measurements of optical receiver employing lossy noise matching network,” Journal of Optical Communication, Vol.17, No.2, pp.56-58, Apr. 1996. Link

[3]  T. Y. Yun, J. H. Han, and M. S. Park, “10Gbit/s Optical Receiver of lossless tuned PIN-HEMT with High Performance,” IEE Electron. Lett., Vol.31, No.19, pp.1688-1689, Sep. 1995. Link

[2]  J. H. Han, T. Y. Yun, et al., “2.5 Gbit/s transmission of spectrum-sliced fibre amplifier light source channels over 200km of dispersion-shifted fibre,” IEE Electron. Lett., Vol.31, No.12, pp.989-990, June 1995. Link

[1]  C. Y. Park, T. Y. Yun, et al., “High performance InGaAs/InP avalanche photodiode for a 2.5 Gb/s optical receiver,” Optical and Quantum Electronics, Vol.27, pp.553-559, 1995. Link