Journal Articles

  1. S. Sabbaghi, H. Yu, X. Ding, Z. Mohseni and Q. J. Gu, “A Highly Sensitive Sub-THz Slot Disk Resonator for Permittivity Sensing Applications,” in IEEE Microwave and Wireless Technology Letters, doi: 10.1109/LMWT.2025.3567846.
  2. J. Chen et al., “A V-Band FMCW Signal Generator With Hybrid Dual-Path VCO Technique Achieving 13.6-GHz Chirp Bandwidth,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 72, no. 5, pp. 658-662, May 2025, doi: 10.1109/TCSII.2025.3547342.
  3. H. Gao et al., “A Ka-Band Four-Beam High-Linearity Transmitter With Beam Interference Cancellation for SATCOM Multibeam Communication,” in IEEE Transactions on Microwave Theory and Techniques, vol. 73, no. 4, pp. 2009-2022, April 2025, doi: 10.1109/TMTT.2025.3542097.
  4. S. Wang et al., “A 26.5–29.5 GHz Doherty PA-LNA Implementation With Synthesized Transformer-Based Matching Network,” in IEEE Transactions on Circuits and Systems I: Regular Papers, doi: 10.1109/TCSI.2024.3523942.
  5. X. Jiang, X. Wu, Q. J. Gu and X. Liu, “On Amplitude Modulation in CW Doppler Radars for Remote Displacement Sensing Using ENVSIL Radar,” in IEEE Transactions on Microwave Theory and Techniques, doi: 10.1109/TMTT.2024.3470819.
  6. N. Li et al., “A Ka-Band 64-Element Four-Beam Phased Array Receiver With Inter-Beam Interference Cancellation,” in IEEE Transactions on Microwave Theory and Techniques, vol. 73, no. 1, pp. 221-233, Jan. 2025, doi: 10.1109/TMTT.2024.3418879.
  7. H. Nie et al., “A 0.5-8GHz Reconfigurable CMOS RF Receiver Front-End for CR and DPA Applications,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 71, no. 12, pp. 4819-4823, Dec. 2024, doi: 10.1109/TCSII.2024.3423839.
  8. H. Gao et al., “A K -Band Four-Beam Transmitter With Decoupled Phase/Gain Control and Enhanced Power Back Off Efficiency for SATCOM,” in IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 11, pp. 6443-6459, Nov. 2024, doi: 10.1109/TMTT.2024.3395635.
  9. W. Zhou et al., “A Compact Multilayer-Stacked Guanella Transformer Based 50–680-MHz GaAs Power Amplifier,” in IEEE Microwave and Wireless Technology Letters, vol. 34, no. 6, pp. 627-630, June 2024, doi: 10.1109/LMWT.2024.3386883.
  10. S. Wang et al., “A Low-Power 23–25.5-GHz FMCW Radar Transceiver in 65-nm CMOS for AIOT Applications,” in IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 4, pp. 2560-2576, April 2024, doi: 10.1109/TMTT.2024.3372289.
  11. N. Li et al., “A C-Band Slat-Type Phased-Array Receiver With Co-Aperture Concurrent Eight Beams,” in IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 5, pp. 2786-2798, May 2024, doi: 10.1109/TMTT.2024.3363048.
  12. H. Yu, X. Ding, J. Chen, S. Sabbaghi and Q. J. Gu, “Design and Analysis of a Sub-THz Resonator-Based High-Resolution Permittivity Sensor,” in IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 5, pp. 2809-2823, May 2024, doi: 10.1109/TMTT.2024.3357594.
  13. H. Nie et al., “A 1.3–1.7-GHz Q-Enhanced Resonator-Based High-IF Bandpass Filter With 1.5%–67% Tunable Fractional Bandwidth in 65-nm CMOS Process,” in IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 7, pp. 4028-4042, July 2024, doi: 10.1109/TMTT.2023.3342627.
  14. X. Ding, H. Yu, S. Sabbaghi and Q. J. Gu, “Design and Analysis of a Mode-Coupler-Based Multimode Multidrop Si Dielectric Waveguide Channel for Sub-THz/THz Interconnect,” in IEEE Transactions on Microwave Theory and Techniques, vol. 72, no. 1, pp. 111-123, Jan. 2024, doi: 10.1109/TMTT.2023.3290189.
  15. Y. Yuan et al., “A Compact Ka-Band Eight-Element Four-Beam Receiver for Low-Earth-Orbit Satellite Communications in 65-nm CMOS,” in IEEE Microwave and Wireless Technology Letters, vol. 33, no. 6, pp. 883-886, June 2023, doi: 10.1109/LMWT.2023.3265022.
  16. Y. Li et al., “A Ku-Band 20.4% Tuning Range VCO With a Tunable Harmonic-Resonant Transformer in 55 nm CMOS,” in IEEE Microwave and Wireless Technology Letters, vol. 33, no. 6, pp. 719-722, June 2023, doi: 10.1109/LMWT.2023.3244944.
  17. X. Ding, H. Yu, S. Sabbaghi and Q. J. Gu, “G-Band Mode-Coupler-Based Si Dielectric Waveguide for Multidrop Sub-THz Interconnect,” in IEEE Microwave and Wireless Technology Letters, vol. 33, no. 6, pp. 647-650, June 2023, doi: 10.1109/LMWT.2023.3239624.
  18. T. Xu, J. Chen, L. Du, C. Song, Q. J. Gu and Z. Xu, “An Inverted Complementary Cross-Coupled VCO to Reduce Phase Noise Sensitivity to KVCO,” in IEEE Microwave and Wireless Technology Letters, vol. 33, no. 5, pp. 571-574, May 2023, doi: 10.1109/LMWT.2023.3234292.
  19. X. Jiang, X. Gao, X. Wu, Q. J. Gu and X. Liu, “Automatic RF Leakage Cancellation for Improved Remote Vital Sign Detection Using a Low-IF Dual-PLL Radar System,” in IEEE Transactions on Microwave Theory and Techniques, vol. 71, no. 6, pp. 2664-2679, June 2023, doi: 10.1109/TMTT.2022.3231658.
  20. M. Li, H. Gao, N. Li, S. Wang, Z. Zhang, P. Chen, N. Wei, X. Yu, J. Gu, C. Song, and Z. Xu, “A 17.7–19.2-GHz Receiver Front End With an Adaptive Analog Temperature-Compensation Scheme,” in IEEE Transactions on Microwave Theory and Techniques, 2022, doi: 10.1109/TMTT.2022.3215558.
  21. P. Chen, H. Gao, N. Li, S. Wang, N. Wei, M. Li, C. Song, Q. J. Gu, and Z. Xu, “Design and Analysis of a 26–34.5-GHz Power Amplifier With Balanced Mismatch Reduction and Interstage Matching,” IEEE Microwave and Wireless Components Letters, vol. 32, no. 8, pp. 968-971, Aug. 2022, doi: 10.1109/LMWC.2022.3159804.
  22. L. Qiu, J. Liu , Q. Dong , Z. lv , K. Zhao , S. Wang , Y.-C. Kuan , Q. Jane Gu , X. Yu , C. Song , Z. Xu, “Ultra-Low Power E-band Low Noise Amplifier with Three Stacked Current-Sharing Amplification Stages in 28-nm CMOS,” IEEE Microwave and Wireless Components Letters, April 2022
  23. Z. Zhang, N. Li, H. Gao, M. Li, S. Wang,Y.-C. Kuan, C. Song, X. Yu, Q. J. Gu, and Z. Xu “A DC-Ka Band 7-Bit Passive Attenuator With Capacitive Compensation Based Bandwidth Extension Technique in 55 nm CMOS,” IEEE Transactions on Microwave Theory and Techniques (TMTT), May 2021
  24. D. Wei, X. Ding, H. Yu, Y.-C. Kuan, Q. J. Gu, Z. Xu, S. Ma, and J. Ren, “Analysis and Design of a 35-GHz Hybrid π-Network High-Gain Phase Shifter with 360° Continuous Phase Shifting,” IEEE Access, January 2021
  25. N. Li, M. Li, S. Wang, Z. Zhang, H. Gao, Y.-C. Kuan, C. Song, X. Yu, Q. J. Gu, and Z. Xu “A Four-Element 7.5–9-GHz Phased-Array Receiver With 1–8 Simultaneously Reconfigurable Beams in 65-nm CMOS,” IEEE Transactions on Microwave Theory and Techniques (TMTT), January 2021
  26. H. Gao, N. Li, M. Li, S. Wang, Z. Zhang, Y.-C. Kuan, X. Yu, Q. J. Gu, and Z. Xu, “A 6.5–12GHz Balanced Variable Gain Low-Noise Amplifier with Frequency-Selective Non-Foster Gain Equalization Technique,” accepted IEEE Transactions on Microwave Theory and Techniques
  27. Q. Jane Gu, “Sub-THz/THz Interconnect, Complement to Electrical and Optical Interconnects,” Fall 2020 IEEE Solid-State Circuits Magazine
  28. M. Li, N. Li, H. Gao, Z. Zhang, S. Wang, Y.-C. Kuan, C. Song, X. Yu, Q. J. Gu, and Z. Xu, “An 800-ps Origami True-Time-Delay-Based CMOS Receiver Front End for 6.5-9 GHz Phased Arrays,” IEEE Solid-State Circuits Letters, September 2020
  29. D. Wei, X. Ding, H. Yu, Y.-C. Kuan, Q. J. Gu, Z. Xu, S. Ma, and J. Ren “A 29-/35-GHz Dual-Band High-Gain Phase Shifter with Hybrid π-Networks,” Electronics Letters, 2020
  30. Y. Wang, B. Yu, Y. Ye, C.-N. Chen, Q. J. Gu, and H. Wang, “A G-Band On-Off-Keying Low Power Transmitter and Receiver for Interconnect Systems in 65-nm CMOS,” Accept IEEE Transactions on Terahertz Science and Technology, Nov. 2019
  31. J. Li, R. Shu, Z. Xu, and Q. J. Gu, “A 21dm-OP1dB 20.3%-Efficiency -131.8dBm/Hz-Noise X-band Cartesian-Error-Feedback Transmitter with Fully Integrated Power Amplifier in 65nm CMOS,” Accept JSSC, Nov. 2019
  32. S. Hao, J. Li, T. Hu, V. Squitieri, Y. Tang, Z. Xu and Q. Jane Gu, “An Active Circulator Based Delay Line,” IEEE MWCL, July 2019
  33. J. Li, and Q. J. Gu, “Harmonic-Based Nonlinearity Factorization of Switching Behavior in Up-Conversion Mixers,” IEEE Transactions on Circuits and Systems I, March 2019
  34. S. Ma, H. Yu, Q. J. Gu, and J. Ren, “A 5-10 Gbps 12.5 mW Source Synchronous I/O Interface with 3D Flip Chip Package,” IEEE TCAS-I, vol. 66, Feb. 2019
  35. B. Yu, X. Ding, H. Yu, Y. Ye, X. Liu, and Q. J. Gu, “Ring Resonator based Sub-THz Dielectric Sensor,” IEEE MWCL September 2018
  36. S. Hao, T. Hu, and Q. J. Gu, “Time-Amplifier Enhanced Phase Noise Filter,” IEEE MWCL July, 2018
  37. S. Ma, H. Yu, Q. J. Gu, and J. Ren, “A 7.52 dB NF, 128.75-132.25 GHz Super-Regenerative Receiver with 0.615 fW/Hz0.5 NEP by Coupled Oscillator Networks for Portable Imaging System in 65nm CMOS,” IEEE Transactions on Microwave Theory and Techniques, September 2018
  38. S. Hao, T. Hu, and Q. J. Gu, “10 GHz inverter-type-time-amplifier based phase noise filter with -133 dBc/Hz phase noise sensitivity,” IEL, April 2018
  39. M. N. Hasan, S. Saeedi, Q J Gu, H. H. Sigmarsson, and X. Liu “Design Methodology of N-Path Filters With Adjustable Frequency, Bandwidth, and Filter Shape” IEEE Transactions on Microwave Theory and Techniques, March 2018
  40. B. Yu, Y. Ye, X. Ding, Y. Liu, Z. Xu, X. Liu, and Q. J. Gu, “Ortho-Mode Sub-THz Interconnect Channel for Planar Chip-to-chip Communications”, IEEE Transactions on Microwave Theory and Techniques, December 2017
  41. J. Li, Z. Xu, W. Hong, and Q. J. Gu, “A Cartesian Error Feedback Architecture” IEEE IEEE Transactions on Circuits and Systems I, November 2017
  42. T. Hu, S. Hao, and Q. J. Gu, “Analysis and Design of Bang-Bang PD based Phase Noise Filter,”  IEEE Trans. on Circuits and Systems I, Octrober 2017
  43. S. Hao, T. Hu, and Q. J. Gu, “A CMOS Phase Noise Filter with Passive Delay Line and PD/CP based Frequency Discriminator,”  IEEE Transactions on Microwave Theory and Techniques, November 2017
  44. R. Shu, J. Li, A. Tang, B. J. Drouin, Q. J. Gu, “Coupling Inductor based Hybrid mm-Wave CMOS SPST Switch,” IEEE Trans. on Circuits and Systems II, April 2017
  45. 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,” vol. 57, Nuclear Fusion, March 2017
  46. S. Hao, T. Hu, and Q. J. Gu, “A 10 GHz Delay Line Frequency Discriminator and PD/CP based CMOS Phase Noise Measurement Circuit”, IEEE Transactions on Microwave Theory and Techniques, May 2017
  47. Y.-T. Chang, Y. Ye, H. Xu, Q. J. Gu, C. Domier, and N. C, Luhmann, Jr., “A Ultra-Wideband CMOS PA with Dummy Filling for Reliability,” accepted Elsevier Solid State Electronics, 2016
  48. M. Naimul Hasan, Q. J. Gu, and X. Liu, “Tunable Blocker-Tolerant On-chip RF Front-end Filter with Dual Adaptive Transmission Zeros for Software Defined Radio Applications,” IEEE TMTT, December 2016
  49. Y. Ye, B. Yu, and Q. J. Gu, “A 165 GHz Transmitter with 10.6% Peak DC-to-RF Efficiency and 0.68 pJ/bit Energy Efficiency on 65 nm Bulk CMOS,” Nov. IEEE TMTT, 2016
  50. R. Shu and Q. J. Gu,, “A Transformer-based V-Band SPDT Switch,” IEEE MWCL, 2016
  51. B. J. Drouin, A. Tang, E. Schlecht, E. Brageot, Q. Jane Gu, Y. Ye, R. Shu, M.-C. F. Chang, Y. Kim, “A CMOS millimeter-wave transceiver embedded in a semi-confocal Fabry-Perot Cavity for molecular spectroscopy,” Journal of Chemical Physics, vol 145, no.7, August 2016
  52. R. Shu, J. Li, A. Tang, B. J. Drouin, Q. J. Gu, “Coupling Inductor based Hybrid mm-Wave CMOS SPST Switch,” TCAS-II, April 2016
  53. B. Yu, Y. Liu, Y. Ye, X. Liu, and Q. J. Gu, “Low-loss and Broadband G-Band Dielectric Interconnect for Chip-to-Chip Communication,” IEEE Microwave and Wireless Components Letter, June 2016
  54. Q. J. Gu, J. Li, and A. Tang, “Power Detectors for Microwave/mm-Wave Imaging Systems on InP/Silicon BiCMOS/CMOS Technologies,” Elsevier Solid State Electronics, January 2016
  55. B. You, S. Lu, L. Chen, Q. J. Gu, “A Half-mode Substrate-Integrated Filter With Tunable Center Frequency and Reconfigurable Bandwidth,” IEEE Microwave and Wireless Components Letter, February 2016
  56. B. Yu, Y. Liu, X. Liu, and Q. J. 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. 96-104, January 2016
  57. Y. Ye, B. Yu, A. Tang, B. Drouin, and Q. J. Gu, “High Efficiency Micromachined Sub-THz Channels for Low Cost Interconnect for Planar Integrated Circuits,” IEEE Microwave and Wireless Components Letters, vol. 26, no. 1, pp. 40-42, January 2016
  58. J. Li, R. Shu and Q. J. Gu, “10 GHz CMOS hybrid reflective-type phase shifter with enhanced phase shifting range,” IET Electronic Letters, vol. 51, no. 23, pp. 1935-1937, November 2015
  59. Z. Xu, D. Winklea, T. C. Oh, S. Kim, S. T.W. Chen, Y. Royter, M. Lau, I. Valles, D. A. Hitko, J. C. Li, Q. J. Gu, “0.8/2.2-GHz Programmable Active Bandpass Filters in InP Si BiCMOS Technology,” IEEE Transactions on Microwave Theory and Techniques, vol. 63, no. 4, pp. 1219-1227, April 2015
  60. Q. J. Gu, “THz Interconnect The Last Centimeter Communication,” IEEE Communication Magazine, vol. 53, no. 4, pp.206-215, April 2015
  61. Q. J. Gu, Z. Xu, and J. Liu, “Physical Design Optimization of MOSFETs for Millimeter Wave and Sub-millimeter Wave Circuits,” Analog Integrated Circuits and Signal Processing, vol. 83, no. 1, pp. 11-22, April 2015
  62. Z. Xu, Q. J. Gu, Y.-C. Wu, and M.-C. F. Chang, “Integrated D-band transmitter and receiver for wireless data communication in 65 nm CMOS,” Analog Integrated Circuits and Signal Processing, vol. 82, no.1, pp. 171-179, November 2014
  63. Q. J. Gu and Z. Gao, “A CMOS High Speed Multi-Modulus Divider With Retiming for Jitter Suppression,” IEEE Microwave and Wireless Components Letters April 2013
  64. Q. J. Gu, K. Yang, Y. Xue, Z. Xu, A. Tang, C. C. Nien, T. H. Wu, J. H. Tarng and M.-C. F. Chang, “A CMOS Integrated W-band Passive Imager,”  IEEE Trans. on Circuits and Systems II, vol. 59, no. 11, November 2012
  65. Q. J. Gu, Z. Xu, A. Tang, and M.-C. F. Chang, “A D-Band Passive Imager in 65 nm CMOS,”  IEEE Microwave and Wireless Components Letters, vol.22, no. 5, pp. 263-265, May 2012
  66. Q. J. Gu, Z. Xu, and M.-C. F. Chang, “Two-Way Current-Combining w-Band Power Amplifier in 65-nm CMOS,” IEEE Transactions on Microwave Theory and Techniques, vol. 60, no. 5, pp. 1365-1374, May 2012
  67. Q. J. Gu, Z. Xu, H.-Y. Jian, B. Pan, X. Xu, F. Chang, W. Liu, and H. Fetterman, “CMOS THz Generator With Frequency Selective Negative Resistance Tank,” IEEE Transactions on Terahertz Science and Technology, vol. 2, no. 2, March 2012
  68. Z. Xu, Q. J. Gu, Y.-C. Wu, H.-Y. Jian, and M. C. Frank Chang, “A 70–78-GHz Integrated CMOS Frequency Synthesizer for W-Band Satellite Communications,” IEEE Transactions on Microwave Theory and Techniques, vol.59, no.12, pp.3206-3218, Dec.2011
  69. A. Tang, Q. J. Gu, and M.-C. F. Chang, “CMOS Receivers for Active and Passive mm-Wave Imaging,” IEEE Communication Magazine, vol. 49, no. 10, Oct. 2011
  70. Z. Xu, Q. J. Gu, and M.-C. F. Chang, “A Three Stage, Fully Differential 128–157 GHz CMOS Amplifier with Wide Band Matching,” IEEE Microwave and Wireless Components Letters, vol. 21, no. 10, pp 550-552, Oct. 2011
  71. Z. Xu, Q. J. Gu, and M.-C. F. Chang, “A 100–117 GHz W-Band CMOS Power Amplifier With On-Chip Adaptive Biasing,” IEEE Microwave and Wireless Components Letters, vol. 21, no. 10, pp 547-549, Oct. 2011
  72. Q. J. Gu, H.-Y. Jian, Z. Xu, Y.-C. Wu, F. Chang, Y. Baeyens, and Y.-K. Chen, “CMOS Prescaler(s) With Maximum 208-GHz Dividing Speed and 37-GHz Time-Interleaved Dual-Injection Locking Range,” IEEE Transactions on Circuits and Systems-II, vol.58, no.7, pp. 393-397, July 2011
  73. D. Murphy, Q. J. Gu, Y.-C. Wu, H.-Y. Jian, Z. Xu, A. Tang, F. Wang, and M.-C. F. Chang, “A Low Phase Noise, Wideband and Compact CMOS PLL for Use in a Heterodyne 802.15.3c Transceiver,”  IEEE Journal of Solid-State Circuits, vol. 46, no. 7, pp.1606-1617, July, 2011
  74. J. Y.-C. Liu, Q. J. Gu, A. Tang, N.-Y. Wang, and M.-C. F. Chang, “A 60 GHz Tunable Output Profile Power Amplifier in 65 nm CMOS,” IEEE Microwave and Wireless Components Letters, vol.21, issue 7, pp. 377-379,  July 2011
  75. Q. J. Gu, Z. Xu, H.-Y. Jian, A. Tang, M.-C. F. Chang, C.-Y. Huang, and C.-C. Nien, “100 GHz integrated CMOS passive imager with 100 MV_W responsivity, 23fW_sqrtHz NEP,” IET Electronics Letters, vol. 47, issue 9, pp. 544-545, 2011, Featured Paper
  76. Z. Xu, Q. J. Gu, and M. C. Frank Chang, “200 GHz CMOS amplifier working close to device fT,” IET Electronics Letters, vol. 47, issue. 11, pp. 639-641, 2011
  77. Q. Gu, Z. Xu, D. Huang, T. LaRocca, N. Wang, and M.-C. F. Chang, “A Low Power V-Band CMOS Frequency Divider With Wide Locking Range and Accurate Quadrature Output Phases,” IEEE Journal of Solid-State Circuits, pp. 991-998, Apr. 2008.
  78. M. F. Chang, I. Verbauwhede, C. Chien, Z. Xu, J. Kim, J. Ko, Q. Gu, and B. Lai, “Advanced RF_Baseband Interconnect Schemes for Inter- and Intra-ULSI Communications,” IEEE Trans. On Electron Devices, vol. 52, no. 7, pp. 1271-1285, Jul. 2005.