Research Areas

Lightweight & Cost-effective Additively-Manufactured RF Components

  1. K. Zhao and D. Psychogiou, “Monolithic SLA-based capacitively-loaded high-Q coaxial resonators and bandpass filters”, in Proc. 50th European Microwave Conference (EuMC), 2020, Jaarbeurs Utrecht, Netherlands, Sept. 13-Oct.18, 2020.

  2. K. Sadasivan and D. Psychogiou, “Tunable 3D-printed coaxial-cavity filters with mixed electromagnetic coupling,” in 2019 IEEE Int. Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, Atlanta, GA, USA, 7-12, July 2019

Multi-octave RF tuning using actuated liquid metal posts

  1. K. Sadasivan and D. Psychogiou, “Widely-reconfigurable 2.5:1 coaxial-cavity resonators using actuated liquid-metal posts”, in Proc. 49th European Microwave Conference (EuMC), 2019, Paris, France, Sept. 29-Oct.4, 2019.

  2. D. Psychogiou and K. Sadasivan, “Tunable coaxial cavity resonator-based filters using actuated liquid metal posts,” IEEE Microw. Wireless Comp. Lett., Vol. 29, No. 12, pp. 763-766, December 2019.

Acoustic-wave lumped-element resonator based filters

  1. D. Psychogiou, R. Gómez-García, and D. Peroulis, “Coupling-matrix-based design of high-Q bandpass filters using acoustic-wave lumped-element resonator (AWLR) modules,” IEEE TMTT, Dec. 2015.
  2. D. Psychogiou, R. Gómez-García, and D. Peroulis, “Single- and Multi-Band Acoustic-Wave-Lumped-Element-Resonator (AWLR) Bandpass Filters with Reconfigurable Transfer Function,” IEEE Trans. Microw. Theory Techn., Vol. 64, Issue 12, pp. 4394-4404, Dec. 2016.
  3. D. Psychogiou, R. Gómez-García and D. Peroulis, “Constant in-band group-delay acoustic-wave-lumped-element-resonator-based bandpass filters and diplexers,” IEEE Trans. Microw. Theory Techn., Vol. 66, Issue 5, pp. 2199-2209, May 2018.
  4. D. Psychogiou, R. Gómez-García, and D. Peroulis, “Acoustic-wave-lumped-element-resonator filters with equi-ripple absorptive stopbands,” IEEE Microw. Wireless Comp. Lett., Vol. 26, No. 3, pp. 177-179, March 2016
  5. D. Psychogiou, “Reconfigurable all-pass-to-bandstop acoustic-wave-lumped-element resonator filters”, IEEE Microw. Wireless Comp. Lett., Vol. 30, No. 8, pp. 745-748, July 2020.
  6. D. Psychogiou, R. Gómez-García and D. Peroulis, “Continuously-tunable-bandwidth acoustic-wave resonator-based bandstop filters and their multi-mode modeling,” in Proc. 46th European Microwave Conference (EuMC), 2016, London, UK, Oct. 2016.

Reflectionless/Absorptive RF Filtering Technologies

  1. R. Gómez-García, L. Yang, J.-M. Munoz-Ferreras and D. Psychogiou, “Avoiding RF isolators: Reflectionless microwave bandpass filtering components for advanced RF front-ends,” IEEE Microwave Magazine Vol. 21, No. 12, pp. 68-86, Dec. 2020.
  2. R. Gómez-García, J.-M. Munoz-Ferreras and D. Psychogiou, “High-order input-reflectionless bandpass/bandstop filters and multiplexers,” IEEE Trans. Microw. Theory Techn., Vol. 67, No. 9, pp. 3683-3695, September 2019.
  3. D. Psychogiou and R. Gómez-García, “Symmetrical quasi-reflectionless SAW-based bandpass filters with tunable bandwidth,” IEEE Microw. Wireless Comp. Lett., Vol. 29, No. 7, pp. 447-449, July 2019.
  4. D. J. Simpson, R. Gómez-García and D. Psychogiou, “Mixed-Technology quasi-reflectionless planar filters: bandpass, bandstop, and multi-band designs,” International Journal of Microwave and Wireless Technologies, Vol. 67, No. 5, pp. 1854-1869, March 2019.
  5. R. Gómez-García, J.-M. Munoz-Ferreras and D. Psychogiou, “Symmetrical quasi-absorptive RF bandpass filters,” IEEE Trans. Microw. Theory Techn., Vol. 67, No. 4, pp. 1472-1482, Feb. 2019.
  6. R. Gómez-García, J.-M. Munoz-Ferreras, W. Feng and D. Psychogiou, “Balanced symmetrical quasi-reflectionless single- and dual-band bandpass planar filters,” IEEE Microw. Wireless Comp. Lett., Vol. 28, No. 9, pp. 798-800, Aug. 2018.
  7. R. Gómez-García, J. Rosario-De Jesus and D. Psychogiou, “Multi-band bandpass and bandstop RF filtering couplers with dynamically-controlled bands,” IEEE Access, Vol. 6, pp. 32321-32327, June 2018.
  8. R. Gómez-García, J.-M. Munoz-Ferreras and D. Psychogiou, “Symmetrical quasi-reflectionless bandstop filters,” IEEE Microw. Wireless Comp. Lett., Vol. 28, Issue 4, pp. 302-304, April 2018.
  9. D. Psychogiou and R. Gómez-García, “Reflectionless adaptive RF filters: bandpass, bandstop, and cascade designs,” IEEE Trans. Microw. Theory Techn., Vol. 65, Issue 7, pp. 898-902, July 2018.

Programmable Resonator Arrays for Tune-All RF Filtering

  1. D. Psychogiou and M. Deng, “High-order coaxial bandpass filters with multiple levels of transfer function tunability,” IEEE Microw. Wireless Comp. Lett., Vol. 30, No. 4, pp. 367-370, February 2020.
  2. D. J. Simpson, R. Gómez-García and D. Psychogiou, “Single-/multi-band bandpass filters and duplexers with fully-reconfigurable transfer-function characteristics,” IEEE Trans. Microw. Theory Techn., Vol. 11, No. 5-6, pp. 466-474, June 2019.
  3. D. J. Simpson and D. Psychogiou, “Coupling Matrix-Based Design of Fully-Reconfigurable Differential/Balanced RF Filters,” IEEE Microw. Wireless Comp. Lett., Vol. 28, No. 10, pp. 888-890, Oct. 2018.
  4. D. Psychogiou, R. Gómez-García and D. Peroulis, “Tune-all RF planar duplexers with intrinsically-switched channels,” IEEE Microw. Wireless Comp. Lett., Vol. 27, No. 4, pp. 350-352, March. 2017.
  5. K. Zeng, D. Psychogiou, W. Allen and D. Peroulis, “A Constant-transfer-function widely-tunable VHF modular field-programmable filter array (FPFA) with IIP3 of 38-52 dBm”, in IEEE MTT-S International Microwave Symposium Digest (IMS), San Francisco, CA, USA, May 2016.

Multifunctional RF co-designed components using spatiotemporally modulated resonators

  1. D. Simpson and D. Psychogiou, “Multiband Magnetless Isolators and Circulators With Reconfigurable Bandpass Filtering Capabilities,” IEEE Transactions on Microwave Theory and Techniques, vol. 71, no. 3, pp. 1239-1250, March 2023.
  2. Z. Zhang and D. Psychogiou, “Incorporating Directionality in Transversal-Resonator-Based Bandpass Filters With Tunable Transfer Function Characteristics,” in IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 70, no. 12, pp. 5194-5207, Dec. 2023.

Filtering-Based Beamforming Networks for Antenna Arrays with Low HPBW Variation

  1. D. J. Simpson and D. Psychogiou, “Frequency-dependent feeding methods for broadband vivaldi arrays with minimum half-power beamwidth (HPBW) variation,” IEEE Open Journal on Antennas and Propagation
  2. D. Simpson and D. Psychogiou, “Broadband linear antenna arrays with frequency-invariant half-power beamwidth,” 2019 IEEE Intern. Symp. Ant. Prop. and USNC-URSI Rad. Sci. Meet., Atlanta, GA, USA, 2019, pp. 1339-1340.

Self-Interference Suppression Using Filtering-Based RF Cancellers

  1. K. Martin and D. Psychogiou, “Ultrawide in-band self-interference suppression using bandpass filter-based RF cancellers,” 2023 53rd European Microwave Conference (EuMC), Berlin, Germany, 2023, pp. 98-101, doi: 10.23919/EuMC58039.2023.10290356.