Davis Advanced RF Technologies Lab

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» [10 Apr 2019] » Dr. Xiaomeng Gao receives the Best Young Professional Paper Award at WAMICON2019
» [01 Feb 2019] » DART Lab to Advance to Phase 3 of the DARPA SPAR Program
» [23 May 2018] » Songjie Defended his PhD Degree
» [20 Jan 2018] » DART Lab to Advance to Phase 2 of the DARPA SPAR Program
» [07 Mar 2017] » DART Lab Awarded NSF STTR Phase II Project on Developing a Radar-based Wearable Heart Health Monitoring Device
» [08 Nov 2016] » DART Lab to Participate in DARPA SPAR program

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Journals Conferences Patents

Journals

  1. Chen Feng, Xiaonan Jiang, Min-Gyo Jeong, Hong Hong, Chang-Hong Fu, Xiaohui Yang, E Wang, Xiaohua Zhu, and Xiaoguang Liu, "Multitarget Vital Signs Measurement With Chest Motion Imaging Based on MIMO Radar," IEEE Transactions on Microwave Theory and Techniques, vol. 69, no. 11, pp. 4735-4747, Nov, 2021.   DOI:10.1109/TMTT.2021.3076239 |
  2. Shengyuan Luo, Yingsong Li, Chow-Yen-Desmond Sim, Yinfeng Xia, and Xiaoguang Liu, "MIMO Antenna Based on Metamaterial Frequency Selective Surface," Applied Computational Electromagnetics Society Journal, vol. 36, no. 4, pp. 465-472, Apr, 2021.   DOI: |
  3. Taejun Lim, James Chen, Akash Anand, Xiaoguang Liu, and Yongshik Lee, "Design Method of Varactor-tuned Planar Bandpass Filters with Wide Tunable Frequency Range and Single Bias Control," IEEE Transactions on Circuits and Systems II, vol. 68, no. 1, pp. 221-225, Jan, 2021.   DOI:10.1109/TCSII.2020.3004614 |
  4. Xiaohu Wu, Yingsong Li, and Xiaoguang Liu, "Quasi-Reflectionless Microstrip Bandpass Filters With Improved Passband Flatness and Out-of-Band Rejection," IEEE Access, vol. 8, no. , pp. 160500-160514, Sep, 2020.   DOI:10.1109/ACCESS.2020.3021314 |
  5. Dashuai Wang, Wei Li, Xiaoguang Liu, Nan Li, Junxiong Zhang, and Chunlong Zhang, "Environmental Perception and Autonomous Obstacle Avoidance - A Deep Learning and Depth Camera Combined Solution," Computers and Electronics in Agriculture, vol. , no. , pp. , Aug, 2020.   DOI:10.1016/j.compag.2020.105523 |
  6. Jianfeng Jiang, Yingsong Li, Lei Zhao, and Xiaoguang Liu, "Wideband MIMO Directional Antenna Array with a Simple Meta-materials Decoupling Structure for X-band Applications," Applied Computational Electromagnetics Society Journal, vol. 35, no. 5, pp. 556-566, May, 2020.   DOI: |
  7. Xiaohu Wu, Yingsong Li, and Xiaoguang Liu, "High-Order Dual-Port Quasi-Absorptive Microstrip Coupled-Line Bandpass Filters," IEEE Transactions on Microwave Theory and Techniques, vol. 68, no. 4, pp. 1462-1475, Apr, 2020.   DOI:10.1109/TMTT.2019.2955692 |
  8. Yue Dong, Yingsong Li, Chow-Yen-Desmond Sim, and Xiaoguang Liu, "A Dipole-Type Millimeter-Wave Antenna with Directional Radiation Characteristics," International Journal of RF and Microwave Computer-Aided Engineering, vol. 30, no. , pp. e22059, Feb, 2020.   DOI:10.1002/mmce.22059 |
  9. Celia Gomez-Molina, Alejandro Pons-Abenza, James Do, Fernando Quesada-Pereira, Xiaoguang Liu, Juan Sebastian Gomez-Diaz, and Alejandro Alvarez-Melcon, "Wideband Bandpass Filters Using a Novel Thick Metallization Technology," IEEE Access, vol. 8, no. 1, pp. 34962-34972, , 2020.   DOI:10.1109/ACCESS.2020.2974552 |
  10. Alejandro Alvarez-Melcon, Xiaohu Wu, Jiawei Zang, Xiaoguang Liu, and J. Sebastian Gomez-Diaz, "Coupling Matrix Representation of Nonreciprocal Filters Based on Time Modulated Resonators," IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 12, pp. 4751-4763, Dec, 2019.   DOI:10.1109/TMTT.2019.2945756 |
  11. Xiaohu Wu, Xiaoguang Liu, Mark D. Hickle, Dimitrios Peroulis, Juan Sebastian Gomez-Diaz, and Alejandro Alvarez Melcon, "Isolating Bandpass Filters Using Time-Modulated Resonators," IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 6, pp. 2331-2345, Jun, 2019.   DOI:10.1109/TMTT.2019.2908868 |
  12. Xiaowei Zhang, Tao Jiang, Yingsong Li, and Xiaoguang Liu, "An Off-grid DOA Estimation Method using Proximal Splitting and Successive Nonconvex Sparsity Approximation," IEEE Access, vol. 7, no. , pp. 66764-66773, May, 2019.   DOI:10.1109/ACCESS.2019.2917309 |
  13. Jiawei Zang, Diego Correas-Serrano, James T.S. Do, Xiaoguang Liu, Alejandro Alvarez-Melcon, and J. Sebastian Gomez-Diaz, "Nonreciprocal wavefront engineering with time-modulated gradient metasurfaces," Physical Review Applied, vol. 11, no. 5, pp. 22572, May, 2019.   DOI:10.1103/PhysRevApplied.11.054054 |
  14. Wanlu Shi, Yingsong Li, Luyu Zhao, Xiaoguang Liu, "Controllable Sparse Antenna Array for Adaptive Beamforming," IEEE Access, vol. 7, no. , pp. 6412-6423, Jan, 2019.   DOI:10.1109/ACCESS.2018.2889877 |
  15. Qingyang Wu, Carlos Feres, Daniel Kuzmenko, Zhi Ding, Zhou Yu, Xin Liu, Xiaoguang Liu, "Deep Learning Based RF Fingerprinting for Device Identification and Wireless Security," IET Electronic Letters, vol. 54, no. 24, pp. 1405–1407, Nov, 2018.   DOI:10.1049/el.2018.6404 |
  16. Bo Yu, Xuan Ding, Hai Yu, Yu Ye, Xiaoguang Liu, and Qun Jane Gu, "Ring-Resonator-Based Sub-THz Dielectric Sensor," IEEE Microwave and Wireless Components Letters, vol. 28, no. 11, pp. 1531-1309, Nov, 2018.   DOI:10.1109/LMWC.2018.2867092 |
  17. Hao Wang, Jingjun Chen, James T.S. Do, Hooman Rashtian, Xiaoguang Liu, "High-Efficiency Millimeter-wave Single-ended and Differential Fundamental Oscillators in CMOS," IEEE Journal of Solid State Circuits, vol. 53, no. 8, pp. 2151-2163, Aug, 2018.   DOI:10.1109/JSSC.2018.2837863 |
  18. Kai Yu, Yingsong Li, Xiaoguang Liu, "Mutual Coupling Reduction of Microstrip Patch Antenna Array Using Modified Split Ring Resonator Metamaterial Structures," ACES Journal, vol. 33, no. 7, pp. 758-763, Jul, 2018.   DOI: |
  19. M. Naimul Hasan, Shahrokh Saeedi, Qun Jane Gu, Hjalti H. Sigmarsson, Xiaoguang Liu, "Design Methodology of N-Path Filters With Adjustable Frequency, Bandwidth, and Filter Shape," IEEE Transactions on Microwave Theory and Techniques Applications, vol. 66, no. 6, pp. 2775-2790, Jun, 2018.   DOI:10.1109/TMTT.2018.2809573 |
  20. Bo Yu, Yu Ye, Xuan Ding, Yuhao Liu, Zhiwei Xu, Xiaoguang Liu, and Qun Jane Gu, "Ortho-Mode Sub-THz Interconnect Channel for Planar Chip-to-chip Communications," IEEE Transactions on Microwave Theory and Techniques, vol. 66, no. 4, pp. 1864-1873, Apr, 2018.   DOI:10.1109/TMTT.2017.2779496 |
  21. Yuhao Liu, Jiansong Liu, Bo Yu, and Xiaoguang Liu, "A Compact Single-Cantilever Multicontact RF-MEMS Switch With Enhanced Reliability," IEEE Microwave and Wireless Components Letters, vol. 28, no. 3, pp. 191-193, Mar, 2018.   DOI:10.1109/LMWC.2018.2800523 |
  22. Yuhao Liu, Yusha Bey, Xiaoguang Liu, "High-Power High-Isolation RF-MEMS Switches with Enhanced Hot-switching Reliability Using A Shunt Protection Technique," IEEE Transactions on Microwave Theory and Techniques, vol. 65, no. 9, pp. 3188-3199, Apr, 2017.   DOI:10.1109/TMTT.2017.2687427 |
  23. Y. Wang, B. Tobias, Y.-T. Chang, J.-H. Yu, M. Li, F. Hu, M. Chen, M. Mamidanna, T. Phan, A.-V. Pham, J. Gu, X. Liu, Y. Zhu, C.W. Domier, L. Shi, E. Valeo, G.J. Kramer, D. Kuwahara, Y. Nagayama, A. Mase, and N.C. Luhmann Jr., "Millimeter-wave Imaging of Magnetic Fusion Plasmas, Technology Innovations Advancing Physics Understanding," Nuclear Fusion, vol. 57, no. , pp. 29703, Mar, 2017.   DOI:10.1088/1741-4326/aa5e30 |
  24. Md. Naimul Hasan, Jane Q. Gu, and Xiaoguang Liu, "Tunable Blocker-Tolerant RF Front-end Filter with Dual Adaptive Notches for Reconfigurable Receivers," IEEE Transactions on Microwave Theory and Techniques, vol. 64, no. 12, pp. 4419-4433, Dec, 2016.   DOI:10.1109/TMTT.2016.2623707 |
  25. Akash Anand and Xiaoguang Liu, "Reconfigurable Planar Capacitive Coupling in Substrate-Integrated Coaxial-Cavities Filters," IEEE Transactions on Microwave Theory and Techniques, vol. 64, no. 8, pp. 2548-2560, Aug, 2016.   DOI:10.1109/TMTT.2016.2580140 |
  26. Yuhao Liu, Yusha Bey, and Xiaoguang Liu, "Extension of the Hot-Switching Reliability of RF-MEMS Switches Using A Series Contact Protection Technique," IEEE Transactions on Microwave Theory and Techniques Applications, vol. 64, no. 10, pp. 3151 - 3162, Oct, 2016.   DOI:10.1109/TMTT.2016.2598170 |
  27. Bo Yu, Yuhao Liu, Yu Ye, Xiaoguang Liu, and Qun Jane Gu, "Low-loss and Broadband G-Band Dielectric Interconnect for Chip-to-Chip Communication," IEEE Microwave and Wireless Components Letters, vol. 26, no. 7, pp. 478-480, Jul, 2016.   DOI:10.1109/LMWC.2016.2574837 |
  28. Bo Yu, Yuhao Liu, Yu Ye, Junyan Ren, Xiaoguang Liu, and Qun Jane Gu, "High Efficiency Micromachined Sub-THz Channels for Low Cost Interconnect for Planar Integrated Circuits," IEEE Transactions on Microwave Theory and Techniques, vol. 64, no. 1, pp. 96-105, Jan, 2016.   DOI:10.1109/TMTT.2015.2504443 |
  29. Young Seek Cho, Himanshu Joshi, Xiaoguang Liu, Hjalti H. Sigmarsson, William J. Chappell, and Dimitrios Peroulis, "Development of 6–12 GHz evanescent–mode two–pole low–loss tunable bandpass filter," Microwave and Optical Technology Letters, vol. 57, no. 10, pp. 2418-2422, Oct, 2015.   DOI:10.1002/mop.29356 |
  30. Joshua Small, Adam Fruehling, Anurag Garg, Xiaoguang Liu, and Dimitrios Peroulis, "Real-time DC-dynamic biasing method for switching time improvement in severely underdamped fringing-field electrostatic MEMS actuators," Journal of Visualized Experiments, vol. 90, no. 90, pp. e51251, Aug, 2014.   DOI:10.3791/51251 |
  31. Akash Anand, Joshua Small, Dimitrios Peroulis, and Xiaoguang Liu, "Theory and Design of Octave Tunable Filters with Lumped Tuning Elements," IEEE Transactions on Microwave Theory and Techniques, vol. 62, no. 12, pp. 4353-4364, Dec, 2013.   DOI:10.1109/TMTT.2013.2287674 |
  32. Kenle Chen, Xiaoguang Liu, and Dimitrios Peroulis, "Widely-Tunable High-Efficiency Power Amplifier with Ultra-Narrow Instantaneous Bandwidth," IEEE Transactions on Microwave Theory and Techniques, vol. 60, no. 12, pp. 3787-3797, Dec, 2012.   DOI:10.1109/TMTT.2012.2220561 |
  33. Joshua Small, Adam Fruehling, Anurag Garg, Xiaoguang Liu, and Dimitrios Peroulis, "DC-dynamic biasing for >50 switching time improvement in severely under-damped fringing-field electrostatic MEMS actuators," Journal of Micromechanics and Microengineering, vol. 22, no. 12, pp. 125029, Dec, 2012.   DOI:10.1088/0960-1317/22/12/125029 |
  34. Joshua Small, Wasim Irshad, Adam Fruehling, Anurag Garg, Xiaoguang Liu, and Dimitrios Peroulis, "Electrostatic fringing-field actuation for pull-in free RF-MEMS analogue tunable resonators," Journal of Micromechanics and Microengineering, vol. 22, no. 9, pp. 095004, Sep, 2012.   DOI:10.1088/0960-1317/22/9/095004 |
  35. Xiaoguang Liu, Linda P. B. Katehi, William J. Chappell, and Dimitrios Peroulis, "Power Handling of High-Q MEMS Tunable Evanescent-mode Resonators and Filters," IEEE Transactions on Microwave Theory and Techniques, vol. 60, no. 2, pp. 270-283, Feb, 2012.   DOI:10.1109/TMTT.2011.2176136 |
  36. Xiaoguang Liu, Joshua Small, David Berdy, Linda Katehi, William J. Chappell, and Dimitrios Peroulis, "Impact of Mechanical Vibration on the Performance of RF MEMS Evanescent-mode Tunable Resonators," IEEE Microwave and Wireless Component Letters, vol. 21, no. 8, pp. 406-408, Aug, 2011.   DOI:10.1109/LMWC.2011.2160159 |
  37. Kenle Chen, Xiaoguang Liu, Andrew Kovacs, and Dimitrios Peroulis, "Anti-Biased Electrostatic RF MEMS Varactors and Filters," IEEE Transactions on Microwave Theory and Techniques, vol. 58, no. 12, pp. 3971-3981, Dec, 2010.   DOI:10.1109/TMTT.2010.2088135 |
  38. Xiaoguang Liu, Linda P. B. Katehi, and Dimitrios Peroulis, "Novel Dual-Band Microwave Filter using Dual-Capacitively-Loaded Cavity Resonators," IEEE Microwave and Wireless Component Letters, vol. 20, no. 11, pp. 610-612, Nov, 2010.   DOI:10.1109/LMWC.2010.2059696 |
  39. Xiaoguang Liu, Linda P. B. Katehi, William J. Chappell, and Dimitrios Peroulis, "High-Q Tunable Microwave Cavity Resonators and Filters using SOI-based RF MEMS Tuners," IEEE/ASME Journal of Microelectromechanical Systems, vol. 19, no. 4, pp. 774-784, Aug, 2010.   DOI:10.1109/JMEMS.2010.2055544 |

Conferences

  1. [Accepted]   Yuting Zhao, Yingsong Li, Fang Ye, Xiaoguang Liu, "A Low-Profile Wideband Absorber Using Capacitive Surface," 2020 IEEE International Workshop on Electromagnetics, Nov, 2020.   DOI: |
  2. [Accepted]   Yinfeng Xia, Yingsong Li, Wei Xue, and Xiaoguang Liu, "An ACS-fed Super Wideband Active Antenna," 2020 IEEE International Workshop on Electromagnetics, Nov, 2020.   DOI: |
  3. [Accepted]   Mark Bourkov, James Do, Xiaoguang Liu, Alejandro Alvarez-Melcon, and J. Sebastian Gomez Diaz, "Time-modulated Patch Antennas with Nonreciprocal Polarization Handedness," 2020 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Jul, 2020.   DOI: |
  4. [Accepted]   Heng Zhao, Xiaomeng Gao, Xiaonan Jiang, Hong Hong, and Xiaoguang Liu, "Non-contact Robust Respiration Detection By Using Radar-Depth Camera Sensor Fusion," International Conferences of the IEEE Engineering in Medicine and Biology Society, Jul, 2020.   DOI: |
  5. Yuting Zhao, Yingsong Li, and Xiaoguang Liu, "A Novel Dual Polarized Tunable Frequency Selective Surface With Varactors," 2019 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Jul, 2019.   DOI:10.1109/APUSNCURSINRSM.2019.8888589 |
  6. Xiaohu Wu, Mahmoud Nafe, and Xiaoguang Liu, "Non-Reciprocal 2nd-Order Bandpass Filter by Using Time-Modulated Microstrip Quarter-Wavelength Resonators," IEEE International Conference on Microwave and Millimeter-wave Technology, May, 2019.   DOI:10.1109/ICMMT45702.2019.8992839 |
  7. Qun Jane Gu, Bo Yu, Xuan Ding, Yu Ye, Xiaoguang Liu, and Zhiwei Xu, "THz interconnect for inter-/intra-chip communication," Proc. SPIE 10982, Micro- and Nanotechnology Sensors, Systems, and Applications XI, May, 2019.   DOI:10.1117/12.2518567 |
  8. [Best Young Professional Paper]   Xiaomeng Gao, Xiaonan Jiang, Songjie Bi, Dennis Matthews, Saul Schaefer, and Xiaoguang Liu, "Measurement of the Complex Human Atrial-Ventricular Motions using Contact-Based Doppler Radar," IEEE Wireless and Microwave Technology Conference (WAMICON), Apr, 2019.   DOI:10.1109/WAMICON.2019.8765441 |
  9. Songjie Bi, Xiaonan Jiang, Xiaomeng Gao, Xiaoguang Liu, "Coupling-Cancellation-Antenna for Improving Doppler Radar Motion Measurement Accuracy," IEEE Wireless and Microwave Technology Conference (WAMICON), Apr, 2019.   DOI:10.1109/WAMICON.2019.8765442 |
  10. Jingjun Chen, Hao Wang, and Xiaoguang Liu, "A 310-GHz Fundamental Oscillator with 0.4-mW Output Power and 3.2\% dc-to-RF Efficiency in 65-nm CMOS," IEEE Wireless and Microwave Technology Conference (WAMICON), Apr, 2019.   DOI:10.1109/WAMICON.2019.8765439 |
  11. Mahmoud A. Nafe, Xiaohu Wu, Xiaoguang Liu, "A Wideband Magnetic-Free Circulator Using Spatio-Temporal Modulation of 2-pole Bandpass Filters," IEEE Radio & Wireless Symposium (RWS), Jan, 2019.   DOI:10.1109/RWS.2019.8714548 |
  12. Hao Wang, Jingjun Chen, James T.S. Do, Xiaoguang Liu, "A 212-GHz Differential VCO with 5.3% dc-to-RF Efficiency in 65-nm CMOS Technology," IEEE Radio & Wireless Symposium (RWS), Jan, 2019.   DOI:10.1109/RWS.2019.8714536 |
  13. [Invited]   Yuhao Liu, Jiansong Liu, Bo Yu, M. Naimul Hasan, and Xiaoguang Liu, "RF MEMS switch for Reconfigurable RF-Front End with Improved Hot-Switching Capabilities," 2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Jul, 2018.   DOI:10.1109/APUSNCURSINRSM.2018.8608865 |
  14. Mahmoud Nafe, M. Naimul Hasan, Hind Reggad, Daniel Kuzmenko, Jingjun Chen, Xiaoguang Liu, "Magnetic-free Circulator Based On Spatio-Temporal Modulation Implemented via Switched Capacitors for Full Duplex Communication," 2018 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium), Jul, 2018.   DOI:10.1109/USNC-URSI.2018.8602797 |
  15. Songjie Bi, Xiaomeng Gao, Victor M. Lubecke, Olga Boric-Lubecke, Dennis Matthews, Xiaoguang “Leo” Liu, "A Multi-Arc Method for Improving Doppler Radar Motion Measurement Accuracy," IEEE MTT-S International Microwave Symposium (IMS), Jun, 2018.   DOI:10.1109/MWSYM.2018.8439687 |
  16. [Invited]   Bo Yu, Yu Ye, Xuan Ding, Xiaoguang Liu, Jane Q. Gu, "Sub-THz Interconnect for Planar Chip-to-Chip Communications," IEEE 18th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, Jan, 2018.   DOI:10.1109/SIRF.2018.8304228 |
  17. Jeronimo Segovia-Fernandez, James Do, Xiaonan Jiang, Yuhao Liu, Julius M. Tsai, Hooman Rashtian, Xiaoguang Liu, David A. Horsley, "Monolithic AlN MEMS-CMOS Resonant Transformer for Wake-up Receivers," IEEE International Ultrasonics Symposium, Sep, 2017.   DOI:10.1109/ULTSYM.2017.8091647 |
  18. Yingsong Li, Songjie Bi, Xiaoguang Liu, "A Modified Bow-Tie Antenna for Contact-Based Heartbeats Detection Applications," 2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Jul, 2017.   DOI:10.1109/APUSNCURSINRSM.2017.8072542 |
  19. Kai Yu, Xiaoguang Liu, Yingsong Li, "Mutual Coupling Reduction of Microstrip Patch Antenna Array Using Modified Split Ring Resonator Metamaterial Structures," 2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Jul, 2017.   DOI:10.1109/APUSNCURSINRSM.2017.8073186 |
  20. Kai Yu, Yingsong Li, Xiaoguang Liu, "A High Gain Patch Antenna Using Near Zero-Index Metamaterial Coating," 2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Jul, 2017.   DOI:10.1109/APUSNCURSINRSM.2017.8073130 |
  21. Scott Block, Xiaonan Jiang, Can Cui, Jeronimo Segovia Fernandez, Rajeevan Amirtharajah, David Horsley, Hooman Rashtian, Xiaoguang Liu, "A 170-nW CMOS Wake-Up Receiver with -60dBm Sensitivity Using AlN High-Q Piezoelectric Resonators," IEEE International Symposium on Circuits and Systems (ISCAS), Jun, 2017.   DOI:10.1109/ISCAS.2017.8050447 |
  22. Md. Naimul Hasan, Xiaoguang Liu, "Tunable RF Front-end Filter with Wideband Blocker Suppression for Multi-Standard Applications," IEEE MTT-S International Microwave Symposium (IMS), Jun., 2017.   DOI:10.1109/MWSYM.2017.8058960 |
  23. Hao Wang, Daniel Kuzmenko, Bo Yu, Yu Ye, Jane Gu, Hooman Rashtian, Xiaoguang Liu, "A Compact 213-GHz CMOS Fundamental Oscillator with 0.56 mW Output Power and 3.9% Efficiency using a Capacitive Transformer," IEEE MTT-S International Microwave Symposium (IMS), Jun, 2017.   DOI:10.1109/MWSYM.2017.8058972 |
  24. Bo Yu, Yu Ye, Xuan Ding, Xiaoguang Liu, Jane Gu, "Dielectric Waveguide Based Multi-Mode sub-THz Interconnect Channel for High Data-Rate High Bandwidth-Density Planar Chip-to-Chip Communication," IEEE MTT-S International Microwave Symposium (IMS), Jun, 2017.   DOI:10.1109/MWSYM.2017.8058983 |
  25. Bo Yu, Yu Ye, Xuan Ding, Xiaoguang Liu, Jane Gu, "High Energy-Efficiency High Bandwidth-Density Sub-THz Interconnect for the Last-Centimeter Chip-to-Chip Communications," IEEE MTT-S International Microwave Symposium (IMS), Jun, 2017.   DOI:10.1109/MWSYM.2017.8058699 |
  26. Md Naimul Hasan, Mahmoud Nafe, Xiaoguang Liu, "Design of All Passive Blocker-Tolerant Reconfigurable RF Front-end Filter," IEEE Wireless and Microwave Technology Conference (WAMICON), Apr, 2017.   DOI:10.1109/WAMICON.2017.7930272 |
  27. Hao Wang, Akash Anand, Xiaoguang Liu, "A Miniature 800-1100-MHz Tunable Filter with High-Q Ceramic Coaxial Resonators and Commercial RF-MEMS Tunable Digital Capacitors," IEEE Wireless and Microwave Technology Conference (WAMICON), Apr, 2017.   DOI:10.1109/WAMICON.2017.7930275 |
  28. Fengqi Hu, Meijiao Li, Calvin W. Domier, Xiaoguang Liu, Neville C. Luhmann, Jr., "Microwave Imaging Radar Reflectometer System Utilizing Digital Beam Forming," APS Division of Plasma Physics Meeting 2016, Oct, 2016.   DOI: |
  29. Bo Yu, Yu Ye, Xiaoguang Liu, and Qun Jane Gu, "Microstrip line based sub-THz interconnect for high energy-efficiency chip-to-chip communications," 2016 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), Aug, 2016.   DOI:10.1109/RFIT.2016.7578183 |
  30. Bo Yu, Yu Ye, Xiaoguang Liu, and Qun Jane Gu, "Sub-THz interconnect channel for planar chip-to-chip communication," 2016 IEEE International Symposium on Electromagnetic Compatibility (EMC), Jul, 2016.   DOI:10.1109/ISEMC.2016.7571770 |
  31. Md. Naimul Hasan, Jane Q. Gu, and Xiaoguang Liu, "Tunable blocker-tolerant RF front-end filter with dual adaptive notches for reconfigurable receivers," IEEE MTT-S International Microwave Symposium (IMS), May, 2016.   DOI:10.1109/MWSYM.2016.7540332 |
  32. [Student Paper Competition Finalist]   Md. Naimul Hasan, Qun Jane Gu, and Xiaoguang Liu, "Reconfigurable Blocker-Tolerant RF Front-End Filter with Tunable Notch for Active Cancellation of Transmitter Leakage in FDD Receivers," IEEE International Symposium on Circuits and Systems (ISCAS), May, 2016.   DOI:10.1109/ISCAS.2016.7538914 |
  33. James T. S. Do and Xiaoguang Liu, "A High-Q W Band Tunable Bandpass Filter," IEEE MTT-S International Microwave Symposium (IMS), May, 2016.   DOI:10.1109/MWSYM.2016.7540094 |
  34. James Chen, Marvin D. Benge, Akash Anand, Hjali Sigmarsson, and Xiaoguang Liu, "An Evanescent-Mode Tunable Dual-band Filter with Independently-Controlled Center Frequencies," IEEE MTT-S International Microwave Symposium (IMS), May, 2016.   DOI:10.1109/MWSYM.2016.7540404 |
  35. Akash Anand and Xiaoguang Liu, "Metallic Air Cavities Integrated with Surface Mount Tuning Components for Tunable Evanescent-Mode Resonators," IEEE MTT-S International Microwave Symposium (IMS), May, 2016.   DOI:10.1109/MWSCAS.2013.6674792 |
  36. Songjie Bi, Juan Zeng, Marzhan Bakbalanova, and Xiaoguang Liu, "Contact-Based Radar Measurement Of Cardiac Motion - A Position And Polarization Study," IEEE Radio and Wireless Symposium (RWS), Jan, 2016.   DOI:10.1109/BIOWIRELESS.2016.7445553 |
  37. Hooman Rashtian, Jane Q. Qun, and Xiaoguang Liu, "A 200-GHz Triple-push Oscillator in 65-nm CMOS with Design Techniques for Enhancing DC-to-RF Efficiency," IEEE Radio and Wireless Symposium (RWS), Jan, 2016.   DOI:10.1109/SIRF.2016.7445473 |
  38. Md. Naimul Hasan, Sudhir Aggarwal Qun Jane Gu, and Xiaoguang Liu, "Tunable N-Path RF Front-end Filter with an Adaptive Integrated Notch for FDD/Co-Existence," IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), Aug, 2015.   DOI:10.1109/MWSCAS.2015.7282050 |
  39. [Invited]   Yuhao Liu, Hao Wang, Yusha Bey, and Xiaoguang Liu, "A Novel RF-MEMS Shunt Capacitive Switch Design for Dielectric Charging Mitigation," IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, Jul, 2015.   DOI:10.1109/IMWS-AMP.2015.7324955 |
  40. [Student Paper Competition Honourable Mention]   Meijiao Li and Calvin Domier and Xiaoguang Liu and Neville Luhmann, "Wide Band MM-Wave, Double-sided Printed Bow-Tie Antenna for Phased Array Applications," 2015 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, Jul, 2015.   DOI:10.1109/APS.2015.7305421 |
  41. Qianteng Wu, and Xiaoguang Liu, "A 3.4-3.6-GHz High Efficiency Gallium Nitride Power Amplifier Using Bandpass Output Matching Network," IEEE MTT-S International Microwave Symposium (IMS), May, 2015.   DOI:10.1109/MWSYM.2015.7167059 |
  42. Danqing Fu, Yusha A. Bey, Calvin Domier, Jr. Neville C. Luhmann, and Xiaoguang Liu, "A Q-Band RF-MEMS Tapered True Time Delay Line for Fusion Plasma Diagnostics Systems," IEEE MTT-S International Microwave Symposium (IMS), May, 2015.   DOI:10.1109/MWSYM.2015.7167068 |
  43. Akash Anand, and Xiaoguang Liu, "Capacitively Coupled Coaxial-Cavity Bandstop Filters with Tunable Center Frequency and Bandwidth," IEEE MTT-S International Microwave Symposium (IMS), May, 2015.   DOI:10.1109/MWSYM.2015.7167148 |
  44. [Invited]   Xiaoguang Liu, "Tunable RF and Microwave Filters," IEEE Wireless and Microwave Technology Conference (WAMICON), Apr, 2015.   DOI:10.1109/WAMICON.2015.7120436 |
  45. Songjie Bi and Dennis Matthews and Xiaoguang Liu, "An experimental study of 2-D cardiac motion pattern based on contact radar measurement," IEEE Wireless and Microwave Technology Conference (WAMICON), Apr, 2015.   DOI:10.1109/WAMICON.2015.7120390 |
  46. James T. Do, and Xiaoguang Liu, "A 75-110GHz Micro-Machined High-Q Tunable Filter," IEEE Wireless and Microwave Technology Conference (WAMICON), Apr, 2015.   DOI:10.1109/WAMICON.2015.7120401 |
  47. Chan Ho Kim, Kai Chang, and Xiaoguang Liu, "Varactor Tuned Ring Resonator Filter With Wide Tunable Bandwidth," 2015 IEEE Radio and Wireless Symposium (RWS), Jan, 2015.   DOI:10.1109/RWS.2015.7129732 |
  48. Qi Jiang, Danqing Fu, Fengqi Hu, Meijiao Li, Calvin W. Domier, Xiaoguang Liu, Neville C. Luhmann, "Mixer and beamforming advances in millimeter-wave imaging," 2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), Sep, 2014.   DOI:10.1109/IRMMW-THz.2014.6956434 |
  49. Md. Naimul Hasan, Sudhir Aggarwal Qun Jane Gu, and Xiaoguang Liu, "Reconfigurable N-path RF front-end filter with improved blocker rejection," IEEE International Midwest Symposium on Circuits and Systems (MWSCAS), Aug, 2014.   DOI:10.1109/MWSCAS.2014.6908354 |
  50. Yuhao Liu, Yusha Bey, and Xiaoguang Liu, "Single-Actuator Shunt-Series RF-MEMS Switch," IEEE MTT-S International Microwave Symposium (IMS), Jun, 2014.   DOI:10.1109/MWSYM.2014.6848666 |
  51. Bo Yu, Yuhao Liu, Xing Hu, Xiaoxin Ren, Xiaoguang Liu, and Qun Jane Gu, "Micromachined Sub-THz Interconnect Channels for Planar Silicon Processes," IEEE MTT-S International Microwave Symposium (IMS), Jun, 2014.   DOI:10.1109/MWSYM.2014.6848632 |
  52. [Best Conference Paper]   Bo Yu, Yuhao Liu, Xing Hu, Xiaoxin Ren, Xiaoguang Liu, and Qun Jane Gu, "Micromachined Silicon Channels for THz Interconnect," IEEE Wireless and Microwave Technology Conference (WAMICON), Jun, 2014.   DOI:10.1109/WAMICON.2014.6857799 |
  53. [Best Student Paper]   Akash Anand, and Xiaoguang Liu, "Substrate-Integrated Coaxial-Cavity Filter With Tunable Center Frequency and Reconfigurable Bandwidth," IEEE Wireless and Microwave Technology Conference (WAMICON), Jun, 2014.   DOI:10.1109/WAMICON.2014.6857772 |
  54. Akash Anand, Yuhao Liu, and Xiaoguang Liu, "Substrate Integrated Octave-Tunable Bandstop Filter with Surface Mount Varactors," IEEE MTT-S International Wireless Symposium (IWS), Apr, 2014.   DOI:10.1109/IEEE-IWS.2014.6864203 |
  55. Yuhao Liu, Akash Anand, and Xiaoguang Liu, "Design of Low Phase-Noise Voltage-Controlled Oscillator Using Tunable Evanescent-Mode Cavity," IEEE Radio and Wireless Symposium (RWS), Jan, 2014.   DOI:10.1109/RWS.2014.6830086 |
  56. Akash Anand, Joshua Small, Muhammad Shoaib Arif, Michael Sinani, Dimitrios Peroulis, and Xiaoguang Liu, "A Novel High-Qu Octave-Tunable Resonator with Lumped Tuning Elements," IEEE MTT-S International Microwave Symposium (IMS), Jun, 2013.   DOI:10.1109/MWSYM.2013.6697760 |
  57. Eric Naglich, Xiaoguang Liu, Dimitrios Peroulis, and William Chappell, "MEMS-Tunable Highly-Loaded Cavity Bandstop Filters for X Band and Beyond," Government Microcircuit Applications and Critical Technologies Conference (GOMACTech), Mar, 2013.   DOI: |
  58. Joshua S. Benjestorf, and Xiaoguang Liu, "Non-Mating Connector (NMC) for USB 3.0 - A Quality Waterproof Connection," International Conference on Consumer Electronics, Jan, 2013.   DOI:10.1109/ICCE.2013.6487018 |
  59. Akash Anand, Joshua Small, Hjalti Sigmarsson, and Xiaoguang Liu, "Tunable RF Filters Based on Radially Loaded Evanescent-mode Cavity Resonators," USNC-URSI National Radio Science Meeting, Jan, 2013.   DOI:10.1109/USNC-URSI-NRSM.2013.6525080 |
  60. Xiaoguang Liu, Eric Naglich, and Dimitrios Peroulis, "Non-linear Effects in MEMS Tunable Bandstop Filters," IEEE MTT-S International Microwave Symposium (IMS), Jun, 2012.   DOI:10.1109/MWSYM.2012.6259754 |
  61. Xiaoguang Liu, Adam Fruehling, Linda Katehi, William J. Chappell, and Dimitrios Peroulis, "Capacitive Monitoring of Electrostatic MEMS Tunable Evanescent-mode Cavity Resonators," European Microwave Integrated Circuits Conference (EuMIC), Oct, 2011.   DOI: |
  62. [Invited]   Xiaoguang Liu, and Dimitrios Peroulis, "Tunable 3-D MEMS Components for Reconfigurable RF Front-Ends," IEEE International Symposium on Antennas and Propagation, Jul, 2011.   DOI:10.1109/APS.2011.5996480 |
  63. Muhammad S. Arif, Xiaoguang Liu, Wasim Irshad, William J. Chappell, and Dimitrios Peroulis, "A High-Q Magnetostatically-tunable All-silicon Evanescent Cavity Resonator," IEEE MTT-S International Microwave Symposium (IMS), Jun, 2011.   DOI:10.1109/MWSYM.2011.5972966 |
  64. Kenle Chen, Xiaoguang Liu, William J. Chappell, and Dimitrios Peroulis, "Integrated Design of Power Amplifier and Narrowband Filter using High-Q Evanescent-Mode Cavity Resonator," IEEE MTT-S International Microwave Symposium (IMS), Jun, 2011.   DOI:10.1109/MWSYM.2011.5972854 |
  65. Xiaoguang Liu, Kenle Chen, Linda P. B. Katehi, William J. Chappell, and Dimitrios Peroulis, "System-level Characterization of Bias Noise Effects on Electrostatic RF MEMS Tunable Filters," International Conference on Micro Electro Mechanical Systems (MEMS), Jan, 2011.   DOI:10.1109/MEMSYS.2011.5734545 |
  66. Wesley N. Allen, Xiaoguang Liu, and Dimitrios Peroulis, "Hermetically-Sealed Evanescent-mode Resonators Utilizing Packaging as Cavities," IEEE Radio and Wireless Symposium (RWS), Jan, 2010.   DOI:10.1109/RWS.2010.5434249 |
  67. Xiaoguang Liu, Linda P. B. Katehi, and Dimitrios Peroulis, "Non-toxic Liquid Metal Microstrip Resonators," Asia-Pacific Microwave Conference (APMC), Dec, 2009.   DOI:10.1109/APMC.2009.5385336 |
  68. Xiaoguang Liu, Linda P. B. Katehi, William J. Chappell, and Dimitrios Peroulis, "Power Handling Capability of High-Q Evanescent-mode RF MEMS Resonators with Flexible Diaphragm," Asia-Pacific Microwave Conference (APMC), Dec, 2009.   DOI:10.1109/APMC.2009.5385409 |
  69. Wesley N. Allen, Joshua Small, Xiaoguang Liu, and Dimitrios Peroulis, "Bandwidth-optimal Single Shunt-capacitor Matching Networks for Parallel RF Loads of Q >1," Asia-Pacific Microwave Conference (APMC), Dec, 2009.   DOI:10.1109/APMC.2009.5385256 |
  70. Joshua Small, Xiaoguang Liu, and Dimitrios Peroulis, "Electrostatically Tunable Analog Single Crystal Silicon Fringing Field MEMS Varactors," Asia-Pacific Microwave Conference (APMC), Dec, 2009.   DOI:10.1109/APMC.2009.5384164 |
  71. Anurag Garg, Joshua Small, Ajit Mahapatro, Xiaoguang Liu, and Dimitrios Peroulis, "Impact of Sacrificial Layer Type on Thin Film Metal Residual Stress," IEEE Sensors Conference, Oct, 2009.   DOI:10.1109/ICSENS.2009.5398591 |
  72. Xiaoguang Liu, Linda P. B. Katehi, William J. Chappell, and Dimitrios Peroulis, "A 3.4-6.2 GHz Continuously Tunable Electrostatic MEMS Resonator with Quality Factor of 460-530," IEEE MTT-s International Microwave Symposium (IMS), Jun, 2009.   DOI:10.1109/MWSYM.2009.5165905 |
  73. Anurag Garg, Joshua Small, Xiaoguang Liu, and Dimitrios Peroulis, "Post-release Displacement Uncertainty of Micro-Cantilevers due to Anchor Over/Under Etching," ASME International Mechanical Engineering Congress and Exposition, Oct, 2008.   DOI:10.1115/IMECE2008-68008 |
  74. Xin Wang, Hao-Han Hsu, Xiaoguang Liu, Wesley N. Allen, Linda P. B. Katehi, and Dimitrios Peroulis, "Frequency- and Time- Domain Adaptive RF Front-ends and Antennas," IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, Aug, 2008.   DOI: |
  75. Xiaoguang Liu, Linda P. B. Katehi, and Dimitrios Peroulis, "MEMS Liquid Metal Through-Wafer Microstrip to Microstrip Transition," IEEE MTT-S International Microwave Symposium (IMS), Jun, 2008.   DOI:10.1109/MWSYM.2008.4633098 |

Patents

  1. [Application]   Xiaohu Wu and Xiaoguang Liu, "Absorptive Microstrip Bandpass Filters with Improved Passband Flatness and Out-of-band Rejection," US Patent # US 63/018,232, Jan, 2019.
  2. [Application]   Chang Liu and Xiaoguang Liu, "Quarter-rate Serial-Link Receiver with Low-Aperture-Delay Samplers," US Patent # PCT/US2019/026097, Jan, 2019.
  3. [Application]   Mohammad-Hadi Sohrabi, Mohamadali Malakoutian, Xiaoguang Liu, and Omeed Momeni, "Field Effect Bipolar Transistor," US Patent # PCT/US2019/046879, Aug, 2018.
  4. Q. Jane Gu, Xiaoguang Liu, Neville C. Luhmann, Jr., and Bo Yu, "Sub-terahertz/terahertz interconnect," US Patent # US/9,978,676, May, 2018.
  5. [Application]   Xiaoguang Liu, Xudong He, and Yuehui Ouyang, "Tunable Filter," US Patent # US 62/645,489, Jan, 2018.
  6. [Application]   Joshua Hihath, Xiaoguang Liu, Maria L. Marco, "On-chip Platform for Single-Molecule Electrical Conductance Measurements," US Patent # US 15/646,956, Jan, 2015.
  7. [Application]   Dennis Matthews, Xiaoguang Liu, and Songjie Bi, "Portable Heart Motion Monitor," US Patent # US 15/035,9463, Jun, 2014.
  8. Dimitrios Peroulis, Akash Anand, Joshua Azariah Small, Xiaoguang Liu, Muhammad Shoaib Arif, Mihal Sinani, "Tunable cavity resonator having a post and variable capacitive coupling," US Patent # US/9,325,052, Jun, 2012.
  9. Dimitrios Peroulis, Adam Fruehling, Joshua Azariah Small, Xiaoguang Liu, Wasim Irshad, Muhammad Shoaib Arif, "Tunable Cavity Resonator Including A Plurality of MEMS Beams," US Patent # US/9,166,271, Jun, 2012.
  10. Himanshu Joshi, Hjalti Hreinn Sigmarsson, Dimitrios Peroulis, William J Chappell, Xiaoguang Liu, "Tunable Evanescent-Mode Cavity Filter," US Patent # US/9,024,709, Oct, 2008.