Current position: Prof. Xun Luo >> Scientific Research
Xun Luo

Personal Information

Professor   Supervisor of Doctorate Candidates  

Academic Titles : Executive Director of Center for Integrated Circuits

Scientific Research

  • Big-Data Electronics & Artificial-Intelligence Micro-System

    Big-data (i.e., one Tb/s and beyond) transmission with artifical-intelligence operation is the trend in the future wireless transmission. Many applications of internet of everything (IoE) will improve the life-quality of human-beings and make the world connection closer. As one of the key micro-systems in the total big-data system, the on-chip transceiver demands novel proof-of-concepts to achieve requirements of high performance IoE system. Such transceiver aims to conquer new frontiers in terms of carrier frequency, signal processing, and RF semiconductor design.


    Digitally-Assisted RF/Microwave/MM-Wave Integrated Circuit

    With the aim to meet the requirement of low power & high efficiency wireless communication, the digital-assisted RF is the key solution. To increase the data-rates with enhanced bandwidth, microwave/mm-wave IC with digital-assisted techniques are the essential module in the whole system. New high efficiency architecture with novel low power circuits will be innovated and developed for minimizing the use of conventional digital/analog circuit functions by replacing them with digital equivalents RF/microwave/mm-wave, which are more amenable to scaling in advanced CMOS technologies.


    On-Chip THz Communication

    THz communication is one of the trend for future talk between things & human-beings. The heart-key elements, i.e., THz IC, should be carefully developed considering the process limits from Si-based process. Novel unit circuit, i.e., resonator, with improved physical meaning is dramatically demanded for THz active circuits design. Besides, THz IC with sub-system implementation should be higly developed with novelty. Consequently, there is a great need for reliable and feasiable passive devices and high-speed ICs intended for THz frequencies.


    Reconfigurable Passive Circuit & System

    For the coming 5G & future communication, data-rates and frequency spectrum are the limitation. For the front-end implemetation, reconfigurable mechanism should be highly developed for the multi-mode and multi-band operation. Novel tunable passive with simultaneous frequency and bandwidth adjustment is the essential key component in pratical communication system, which still remains chanllenges for scientific research and development.


    Smart Sensor Network

    To improve the life-quality of human-beings, sensor network is rapidly developed. Large numbers, low energy use, self-organization, collaborative signal processing, and querying ability are recognized great challenges for sensor network. Novel intelligence innovation is dramatically demanded to overcome these limits, especially for the field of smart array integrated circuits and systems with strong performance covering bands from MHz to THz.


    Biomicroelectronics Integrated System

    Biomicroelectronics is the discipline resulting from the convergence of biology and microelectronics, which has the potential to significantly impact many areas important to the human lifes with high-quality, such as the healthcare, protecting the environment, and food supply. There are many puzzles which should be deeply and widely investigated. As the key role of such system, integrated circuits with low-cost, low power, and multi function are highly required.


    Multi-Dimensional Integrated Packaging

    Packaging circuits and systems are always one of the key challenges in modern microelectronics systems. High performance with compact size and fashion view based on multi-dimensional new technologies is demanded, which can support the operation covering MHz up to THz. Not just the math, physics, and chemistry are fundamental requirements, also includes the development of material, implementation, and fabrication.

  • Journal

    1. H. Qian, Y. Shu, J. Zhou, and X. Luo, “A 20−32GHz quadrature digital transmitter using synthesized impedance variation compensation,” IEEE J. Solid-State Circuits, on-line publication (early access), 2020.

    2. Z. Deng, J. Zhou, H. Qian, and X. Luo, “High resolution reconfigurable phase-tuning line using self-shielded 3-D interdigital capacitor,” IEEE Microw. Wireless Compon. Lett., accepted, 2020.

    3. W. Yu, H. Qian, Y. Rao, and X. Luo, “A reflectionless filtering 90° coupler using stacked cross coupled-line and loaded cross-stub,” IEEE Microw. Wireless Compon. Lett., accepted, 2020.

    4. Y. Rao, H. Qian, B. Yang, R. Gomez-Garcia, and X. Luo, Dual-band bandpass filter and filtering power divider with ultra-wide upper stopband using hybrid microstrip/DGS dual-resonance cells,” IEEE Access, vol. 8, pp. 23624-23637, Feb. 2020.

    5. C. Liu, Y. Rao, Z. Deng, W. Li, and X. Luo, “Marshalling access: four-channel switchable filter bank,” IEEE Microw. Magazine, vol. 21, no. 1, pp. 73–81, Jan. 2020. (IEEE IMS2019 Student Design Competition Winner for the category of Four-Channel Switchable/Reconfigurable Filter Bank)

    6. Y. Shu, H. Qian, and X. Luo, “A 169.6 GHz low phase noise and wideband hybrid mode-switching push-push oscillator,” IEEE Trans. Microw. Theory Tech., vol. 67, no. 7, pp. 27692781, Jul. 2019.

    7. Z. Deng, H. Qian, and X. Luo, “Tunable quasi-circulator based on a compact fully-reconfigurable 180° hybrid for full-duplex transceivers,” IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 66, no. 8, pp. 29492962, Aug. 2019(IEEE TCAS-I Download Ranking No.6, May 2019)

    8. J. Zhou, H. Qian, J. Ren, and X. Luo, “Reconfigurable wideband filtering balun with tunable dual-notched bands using CPW-to-slot transition and varactor-loaded shorted-slot,” IEEE Access, vol. 7, pp. 36761–36771, Mar. 2019.

    9. X. Luo, B. Yang, and H. Qian, “Adaptive synthesis for resonator-coupled filters based on particle swarm optimization,” IEEE Trans. Microw. Theory Tech., vol. 67, no. 2, pp. 712725, Feb. 2019.

    10. H. Qian, B. Zhang, and X. Luo, “High resolution wideband phase shifter with current limited vector-sum,” IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 66, no. 2, pp. 820–833, Feb. 2019.

    11. J. Deng, Y. Yang, Z. Zhu, and X. Luo, “A 140–220 GHz balanced doubler with 8.7–12.7% efficiency,” IEEE Microw. Wireless Compon. Lett., vol. 28, no. 6, pp. 515–517, Jun. 2018.

    12. Z. Deng, Z. Tian, H. Qian, and X. Luo, “A metamorphosed roadway: dual-band variable-attenuation notch filters,” IEEE Microw. Magazine, vol. 19, no. 2, pp. 70–76, Mar. 2018. (IEEE IMS2017 Student Design Competition Winner for the category of Dual-Band Variable-Attenuation Notch Filters)

    13. J. Zhou, H. Qian, and X. Luo, “Compact wideband phase shifter using microstrip self-coupled line and broadside-coupled microstrip/CPW for multi-phase feed-network,” IEEE Microw. Wireless Compon. Lett., vol. 27, no. 9, pp. 791–793, Sep. 2017. (IEEE MWCL Download Ranking No.1, Sep. 2017)

    14. H. Qian, J. O. Liang, and X. Luo, “Wideband digital power amplifiers with efficiency improvement using 40-nm LP CMOS technology,” IEEE Trans. Microw. Theory Tech., vol. 64, no. 3, pp. 675–687, Mar. 2016. (IEEE TMTT Download Ranking No.1, Apr. 2016)

    15. H. Qian and X. Luo, “Compact 6.5-28.5 GHz on-chip balun with enhanced inband balance responses,” IEEE Microw. Wireless Compon. Lett., vol. 26, no. 12, pp. 993–995, Dec. 2016.

    16. X. Luo, S. Sun, et al., “Tunable bandpass filter with two adjustable transmission poles and compensable coupling,” IEEE Trans. Microw. Theory Tech., vol. 62, no. 9, pp. 2003–2013, Sep. 2014. (IEEE TMTT Download Ranking No.1, Sep. 2014)

    17. A. Li, S. Zheng, J. Yin, X. Luo, and H. C. Luong, “A 21–48 GHz subharmonic injection-locked fractional-N frequency synthesizer for multiband point-to-point backhaul communications,” IEEE J. Solid-State Circuits, vol. 8, no. 49, pp. 1785–1799, Aug. 2014. (IEEE TMTT Download Ranking No.13, Aug. 2014)

    18. X. Luo, H. Qian, S. Sun, and Z.-N. Chen, “Dual-band bandpass filter design using miniaturized spiral scheme,” Microwave. Opt. Technol. Lett., vol. 56, no. 4, pp. 997–999, Apr. 2014.

    19. X. Luo and H. Qian, “Compact Filter Design Using SIR and Tapped Asymmetrical Coupling Path,” Microwave. Opt. Technol. Lett., vol. 55, no. 9, pp. 2059–2062, Sep. 2013.

    20. X. Luo, J.-G. Ma, K. S. Yeo, and E.-P. Li, “Compact ultra-wideband (UWB) bandpass filter with dual- and quad-notched bands,” IEEE Trans. Microw. Theory Tech., vol. 59, no. 6, pp. 1509–1519, Jun. 2011. (IEEE TMTT Download Ranking No.2, Jul. 2011)

    21. X. Luo, J.-G. Ma, E.-P. Li, and K. Ma, “Hybrid microstrip T-stub/defected ground structure cell for electromagnetic interference bandpass filter design,” IEEE Trans. Electromagnetic Compatibility, vol. 53, no. 3, pp. 717–725, Aug, 2011. (IEEE TEMC Download Ranking No.10, Sep. 2011)

    22. X. Luo, J.-G. Ma, and E.-P. Li, “Hybrid microstrip/DGS cell for filter design,” IEEE Microwave Wireless Compon. Lett., vol. 21, no. 10, pp. 528–530, Oct. 2011, invited paper.

    23. X. Luo, J.-G. Ma, and E.-P. Li, “Wideband bandpass filter with wide stopband using loaded BCMC stub and short-stub,” IEEE Microwave Wireless Compon. Lett., vol. 21, no. 7, pp. 353–355, Jul. 2011.

    24. X. Luo, J.-G. Ma, and E.-P. Li, “Bandpass filter with wide stopband using broadside-coupled microstrip T-stub/DGS cell,” Microwave. Opt. Technol. Lett., vol. 53, no. 8, pp. 1786–1789, Aug. 2011.

    25. X. Luo, J.-G. Ma, and E.-P. Li, “Dual-band bandpass filter using stepped-impedance-stub loaded hexagonal SIR,” Microwave. Opt. Technol. Lett., vol. 53, no. 5, pp. 1147–1150, May. 2011.

    26. X. Luo, J.-G. Ma, K. Ma, and K. S. Yeo, “Compact UWB bandpass filter with ultra narrow notched band,” IEEE Microwave Wireless Compon. Lett., vol. 20, no. 3, pp. 145–147, Mar. 2010.

    27. X. Luo, H. Qian, J.-G. Ma, K. Ma, and K. S. Yeo, “Compact Dual-Band Bandpass Filters Using Novel Embedded Spiral Resonator (ESR),” IEEE Microwave Wireless Compon. Lett., vol. 20, no. 8, pp. 435–437, Aug. 2010.

    28. X. Luo, J.-G. Ma, and K. S. Yeo, “Dual-band bandpass filter using embedded spiral resonator (ESR) and broadside-coupled meander slot-line (MSL),” Electronic Lett., vol. 46, no. 16, pp. 1390–1391, Aug. 2010.

    29. X. Luo, H. Qian, J.-G. Ma, and E.-P. Li, “Wideband bandpass filter with excellent selectivity using new CSRR based resonator,” Electronic Lett., vol. 46, no. 20, pp. 1135–1137, Sep. 2010.

    30. X. Luo, J.-G. Ma, K. Ma, and K. S. Yeo, “An ultra-wideband bandpass filter using hybrid structure of microstrip and CPW,” Microwave. Opt. Technol. Lett., vol. 51, no. 10, pp. 2470–2473, Oct. 2009.


    Conference

    1. D. Tang, C. Han, Z. Deng, H. Qian, and X. Luo, “Compact bandpass filter with wide stopband and low radiation loss,” in IEEE MTT-S Int. Microwave Sym. Dig., Los Angeles, CA, USA, Jun. 2020. (IMS2020 Best Student Paper Finalist)

    2. H. Qian, B. Yang, J. Zhou, H. Xu, and X. Luo, “A quadrature digital power amplifier with hybrid Doherty and impedance boosting for efficiency enhancement in complex domain,” in IEEE RFICLos Angeles, CA, USA, Jun. 2020.

    3. B. Yang, H. Qian, T. Wang, and X. Luo, “1.2–3.6 GHz 32.67 dBm 4096-QAM digital PA using reconfigurable power combining transformer for wireless communication,” in IEEE RFIC, Los Angeles, CA, USA, Jun. 2020.

    4. Y. Shu, H. Qian, and X. Luo, “A 18.6-to-40.1GHz 201.7dBc/Hz FoMT multi-core oscillator using E-M mixed-coupling resonance boosting, in IEEE ISSCC, San Franscisco, CA, Feb. 2020.

    5. W. Li, H. Qian, and X. Luo, A 21.6–45 GHz low-profile wideband slot antenna array for 5G wireless, in IEEE AP-S/URSI, Montréal, Canada, Jun. 2020.

    6. X. Deng, Y. Tian, K. Huang, J. Jiang, Y. He, J. Zhou, W. Su, and X. Luo, A 315–340 GHz frequency amplifier/multiplier chain with 8.5 dBm peak output power,” in IEEE MTT-s Int. Wireless Symp., Shanghai, China, May. 2020.

    7. B. Yang, H. Qian, J. Zhou, Y. Shu, and X. Luo, “A 90-98 GHz 2×2 phased-array transmitter with high resolution phase control and digital gain compensation,” in IEEE MTT-S Int. Microwave Sym. Dig., Boston, MA, USA, Jun. 2019. (IMS2019 Best Student Paper Finalist)

    8. X. Liu, J. Zhou, Z. Deng, and X. Luo, “Compact wideband marchand balun with amplitude and phase compensation shield,” in IEEE MTT-S Int. Microwave Sym. Dig., Boston, MA, USA, Jun. 2019. (IMS2019 Best Student Paper Finalist)

    9. W. Chen, Y. Shu, Z. Deng, H. Qian, and X. Luo, “A wideband quasi-circulator with low NF and high P1dB using noise-canceling technique,” in IEEE MTT-S Int. Microwave Sym. Dig., Boston, MA, USA, Jun. 2019.

    10. Z. Tian, Y. Rao, Z. Deng, and X. Luo, “Reconfigurable dual-band filtering power divider with ultra-wide stopband using hybrid microstrip/square defected ground structure,” in IEEE MTT-S Int. Microwave Sym. Dig., Boston, MA, USA, Jun. 2019.

    11. C. Liu, Z. Deng, X. Liu, and X. Luo, “A wideband bandpass filter with broad stopband and ultra-wide reflectionless range for 5G applications,” in IEEE MTT-S Int. Microwave Sym. Dig., Boston, MA, USA, Jun. 2019.  (IMS2019 Sixty-Second Presentation Competition Award)

    12. H. Qian, Y. Shu, J. Zhou, and X. Luo, “A 20-32GHz digital quadrature transmitter with notched-matching and mode-switch topology for 5G wireless and backhaul,” in IEEE RFIC, Boston, MA, USA, Jun. 2019.

    13. C. Han, Y. Rao, H. Qian, and X. Luo, “High-selectivity bandpass filter with wide upper stopband using harmonic suppression structure,”in IEEE Int. Symp. Radio-Freq. Integra. Techn., Nanjing, China, Aug. 2019. (RFIT2019 Best Student Paper Award, 3rd Place)

    14. Y. Shu, H. Qian, and X. Luo, “A 169.6 GHz hybrid mode-switching push-push oscillator with 21.7% tuning range and 180.6dBc/Hz FoMT in 28nm CMOS technology,” in IEEE MTT-S Int. Microwave Sym. Dig., Philadelphia, PA, USA, Jun. 2018.

    15. Z. Deng, H. Qian, and X. Luo, “A compact quasi-circulator with high isolation using reconfigurable 180° hybrid,” in IEEE MTT-S Int. Microwave Sym. Dig., Philadelphia, PA, USA, Jun. 2018.

    16. J. Ren, H. Qian, and X. Luo, “A wideband filtering balun using CPW-to-slotline transitions,” in IEEE MTT-S Int. Microwave Sym. Dig., Philadelphia, PA, USA, Jun. 2018. (IMS2018 Best Student Paper Finalist)

    17. L. Fan, H. Qian, B. Yang, G. Wang, and X. Luo, “Filtering power divider with wide stopband using open-stub loaded coupled-line and hybrid microstrip T-stub/DGS cell,” in IEEE MTT-S Int. Microwave Sym. Dig., Philadelphia, PA, USA, Jun. 2018.

    18. Y. Rao, H. Qian, R. Gomez-Garcia, and X. Luo, “Dual-band bandpass filter with ultra-wide upper stopband using slow-wave dual-resonance cells,” in IEEE MTT-S Int. Microwave Sym. Dig., Philadelphia, PA, USA, Jun. 2018.

    19. Y. Shu, H. Qian, and X. Luo, “A 20.7-31.8GHz dual-mode voltage waveform-shaping oscillator with 195.8dBc/Hz FoMT in 28nm CMOS,” in IEEE RFIC, Philadelphia, PA, USA, Jun. 2018.

    20. T. Wang, X. Liu, Z. Deng, and X. Luo, “Compact multi-function notch filter using λ/4 microstrip resonator with embedded varactor-loaded hybrid microstrip/CPW structure,” in Proc. Asia-Pacific Microw. Conf., Kyoto, Nov. 2018.

    21. Y. Shu, H. Qian, and X. Luo, “A 173 GHz transformer-based push-push oscillator with 11.2% tuning range in 28nm CMOS,” in IEEE MTT-s Int. Wireless Symp., Chengdu, China, May. 2018. (IWS2018 Best Student Paper Award, 2nd Place)

    22. X. Liu, Z. Tian, H. Qian, and X. Luo, “Reconfigurable diplexer using λ/2 resonator with hybrid varactor-embedded stepped-impedance open-stub and slot,” in IEEE MTT-s Int. Wireless Symp., Chengdu, China, May. 2018.

    23. C. Liu, X. Liu, Z. Deng, and X. Luo, “High-isolation multi-function duplexer using varactor loaded sir and feed-line,” in UCMMT, Hangzhou, China, Sep. 2018.

    24. X. Tian, H. Qian, R. Gomez-Garcia, and X. Luo, “Compact K-band split-type dual-band bandpass filter based on stepped-impedance DGS cells,” in UCMMT, Hangzhou, China, Sep. 2018.

    25. Z. Tian, H. Qian, and X. Luo, “Reconfigurable dual-band bandpass filter with fully-switch operation using λ/2 folded-resonator with varactor-loaded open-stub,” in IEEE MTT-S Int. Microwave Sym. Dig., Honolulu, HI, Jun. 2017.

    26. J. Zhou, H. Qian, D. Huang, and X. Luo, “Ultra-wideband (UWB) wilkinson power divider with ultra-narrow dual-notched bands using embedded CPW resonators,” in IEEE MTT-S Int. Microwave Sym. Dig., Honolulu, HI, Jun. 2017.

    27. H. Qian, J. O. Liang, N. Zhu, P. Gao, and X. Luo, “A 3-7GHz 4-element digital modulated polar phased-array transmitter with 0.35° phase resolution and 38.2% peak system efficiency,” in IEEE Custom Integrated Circuits Conf., Austin, TX, May 2017.

    28. B. Yang, H. Qian, Y. Shu, and X. Luo, “Compact bandpass filter with wide stopband using slow-wave CPW resonator with back-to-back coupled-scheme,” in IEEE Int. Symp. Radio-Freq. Integra. Techn., Seoul, Korea, Aug. 2017.

    29. Y. Shu, B. Yang, H. Qian, and X. Luo, “Compact UWB antenna with quad-notched bands,” in IEEE AP-S/URSI, Puerto Rico, Jun. 2016.

    30. H. Qian, J. O. Liang, N. Zhu, P. Gao, and X. Luo, “A 3.1–7 GHz 40-nm CMOS digital polar transmitter with high data-rate and feed-forward operation,” in IEEE Int. Symp. Radio-Freq. Integra. Techn., Taipei, Taiwan, Aug. 2016. (RFIT2016 Best Student Paper Award, 1st Place)

    31. Z. Zhang, B. Yang, H. Qian, X. Luo, “Dual-band bandpass filter based on slow-wave resonant cell,” in IEEE MTT-S Int. Conf. Numerical Electromagn. Multiphys. Model. Optim., Beijing, China, Jul. 2016.

    32. B. Yang, H. Qian, and X. Luo, “Compact CPW bandpass filter with ultra-wide stopband using slow-wave structure,” in IEEE Int. Workshop on Electromagn., Nanjing, China, May 2016.

    33. X. Luo, et. al., “A waveform-shaping millimeter-wave oscillator with 184.7dBc/Hz FOM in 40nm digital CMOS process,” in IEEE MTT-S Int. Microwave Sym. Dig., Phoenix, AZ, May 2015.

    34. X. Luo, “On-chip CMOS THz resonant cell using hybrid coplanar-waveguide T-stub/defected ground structure,” in IEEE MTT-S Int. Microwave Sym. Dig., Phoenix, AZ, May 2015.

    35. H. Qian and X. Luo, “Novel on-chip passive circuits for RF, microwave, millimeter-wave and sub-THz applications,” in IEEE MTT-S Int. Microwave Workshop Series, Suzhou, China, Jul. 2015.

    36. H. Qian, J. O. Liang, and X. Luo, “A 3.5-9.5 GHz compact digital power amplifier with 39.3% peak PAE in 40nm CMOS technology,” in IEEE MTT-s Int. Wireless Symp., Shenzhen, China, Apr. 2015. (IWS2015 Best Student Paper Award, 1st Place)

    37. L. Jin and X. Luo, “Ultra-low phase-noise VCO for microwave/mm-wave point-to-point backhaul communication,” in IEEE MTT-s Int. Wireless Symp., Shenzhen, China, Apr. 2015.

    38. K. Han and X. Luo, “A 9.5–18.5 GHz power amplifier for multi-band microwave point-to-point backhaul communication,” in IEEE RFIC, Tamp Bay, FL, Jun. 2014.

    39. X. Luo, “Compact ultra-wideband stacked-spiral-coupled balun using center-tapped float-shield and port-coupled compensation line,” in IEEE MTT-S Int. Microwave Sym. Dig., Seattle, WA, Jun. 2013.

    40. A. Li, S. Zheng, J. Yin, H. C. Luong and X. Luo, “A CMOS 21-48GHz fractional-N synthesizer employing ultra-wideband injection-locked frequency multipliers,” in IEEE Custom Integrated Circuits Conf., San Jose, CA, Sep. 2013. (CICC2013 Best Student Paper Finalist)

    41. X. Luo, L. Jin, S. Sun, and E.-P. Li, “Miniaturized dual-band bandpass filter using λ/2 spiral-resonator and loaded open-stub,” in IEEE MTT-s Int. Wireless Symp., Beijing, China, Apr. 2013.

    42. X. Luo and G. Wang, “Compact diplexer design using spiral-oriented resonator,” in Proc. Asia-Pacific Microw. Conf., Korea, Nov. 2013.

    43. X. Luo, S. Sun, and E.-P. Li, “Miniaturized dual-band bandpass filter using λ/2 spiral-resonator and loaded open-stub,” in IEEE MTT-S Int. Microwave Sym. Dig., Montréal, Canada, Jun. 2012.

    44. X. Luo, S. Sun, and E.-P. Li, “Microstrip spiral-coupled scheme bandpass filters with mutual electric and magnetic coupling,” in 42st European Microw. conf., Amsterdam, Oct. 2012.

    45. X. Luo, J.-G. Ma, and E.-P. Li, “Miniaturized bandpass filter with high selectivity and wide stopband using dual-layer structure,” in IEEE MTT-S Int. Microwave Sym. Dig., Baltimore, MA, Jun. 2011.

    46. X. Luo, J.-G. Ma, and E.-P. Li, “Compact high selectivity and wide stopband bandpass filter using dual-layer structure,” in 41st European Microw. conf., Manchester, Oct. 2011.

    47. X. Luo and E.-P. Li, “UWB bandpass filter with wide notch using hybrid microstrip/CPW scheme and defected microstrip array,” in Proc. Asia-Pacific Microw. Conf., Melbourne, Dec. 2011.

    48. X. Luo, H. Qian, J.-G. Ma, K. Ma, and K. S. Yeo, “A Compact UWB bandpass filter with ultra narrow notched band and competitive attenuation slope,” in IEEE MTT-S Int. Microwave Sym. Dig., Anaheim, CA, May. 2010.

    49. X. Luo, H. Qian, J.-G. Ma, and K. S. Yeo, “Novel bandpass filter with wide-stopband using quarter-wavelength shorted coupled-lines,” in Proc. Asia-Pacific Microw. Conf., Dec, 2010.

    50. X. Luo and J.-G. Ma, “Compact slot-line bandpass filter using backside microstrip open-stubs and air-bridge structure for spurious Suppression,” in Proc. Asia-Pacific Microw. Conf., Dec. 2009.

    51. H. Qian, X. Luo, X. Song, W. Luo, and J.-G. Ma, “Compact UWB bandpass filter using microstrip and coplanar waveguide back-to-back coupled structure,” in IEEE International Conference on Electron Devices and Solid-State Circuit, Nov. 2009, invited paper.

    52. X. Luo, J.-G. Ma, and E.-P. Li, “Compact ultra-wideband bandpass filter using broadside-coupled microstrip/coplanar waveguide composition structure,” in Proc. Asia-Pacific Microw. Conf., Dec. 2008.


  • Selected (Since 2015, after joined UESTC, including 12 Granted International Patents) 

    Granted

    1. The double notch resonators of mixed microstrip line/co-planar waveguide, trapper and electronic equipment, CN109449556B, 2020

    2. Polar phased-array transmitter and mobile terminal, US10411943B2, 2019

    3. Polar transmitter with tunable matching network, US10257015B2, 2019

    4. Dual-mode oscillator and multi-phase oscillator, US10498289B2, 2019

    5. Resonant unit and filter, US10276904B2, 2019

    6. Phase shifter and feed network including a microstrip/coplanar waveguide coupling structure having vertical projections, US10461390B2, 2019

    7. Polar transmitter with tunable matching network, EP3182664B1, 2019

    8. A kind of phase shifter and feeding network, CN105977583B, 2019

    9. Microstrip filter, duplexer, and related electronic devices, CN108574130B, 2019

    10. Resonant element and filter, CN106099278B, 2019

    11. Dual-mode oscillator and multi-phase oscillator, KR101980723B1, 2019

    12. Digital phase shifter, US10128817B2, 2018

    13. Transmitter, receiver, and method for receiving and transmitting a radio frequency signal, US9264279B2, 2016

    14. Transmitter, receiver and radio frequency receiving/transmitting method, EP2906000B1, 2016

    15. Frequency multiplier and method of generating frequency-multiplied signal, EP2660972B1, 2016

    16. A balun circuit, CN103339019B, 2016

    17. Frequency multiplier and method for generating frequency multiplied signals, US9172297B2, 2015

    18. Transmitter, receiver, and method for RF transceiving, CN103430456B, 2015


    Filed

    1. A amplifier and communication system, filed, 2020

    2. Multi-mode oscillator, field, 2020

    3. A kind of transmission line, filed, 2020

    4. Reconanter cell and passive components, field, 2020

    5. A filtering power-divider, field, 2020

    6. 3D Capacitor, filed, 2020

    7. Power amplifier compensation circuit and method, filed, 2019

    8. A kind of tunable transformer, filed, 2019

    9. A digital transmitter with impedance mismatch compensation, filed, 2019

    10. Multi-mode wideband antenna based on defected ring slot structure, filed, 2019

    11. Pole phased array transmitter and the mobile terminal, KR1020187036248A, 2019

    12. Voltage wave form oscillator, KR20190002634A, 2019

    13. Particle swarm optimization based adpative synthesis filter, CN201910055275.8, 2019

    14. Polarization-based phased array transmitter, mobile terminal, WO2018094706A1, 2018

    15. Voltage waveform shaping oscillator, WO2018023367A1, 2018

    16. Capacitor unit, integrated capacitor and resonant cell, WO2018068181A1, 2018

    17. Filtering unit and filter, US20180248243A1, 2018

    18. Phase shifter and feed network, EP3264521A1, 2018

    19. Dual-mode oscillator and multi-phase oscillator, EP3319229A3, 2018

    20. Filtering apparatus and filter, JP2018531560A, 2018

    21. Filter unit and a filter, KR20180052725A, 2018

    22. Voltage waveform shaping oscillator, CN107896516A, 2018

    23. Polar transmitter with tunable matching network, CN108370366A, 2018

    24. Capacitor unit, integrated capacitor and resonant cell, CN108235782A, 2018

    25. Filtering unit and filter, WO2017193340A1, 2017

    26. Digital phase shifter, EP3324541A1, 2017

    27. Resonant unit and filter comprising a defected ground structure, EP3258535A1, 2017

    28. Dual-mode oscillator and multi-phase oscillator, CN106571777A, 2017

    29. Digital phase shifter, CN106656099A, 2016

    30. Antenna apparatus, base station and communication system, CN105977639A, 2016