2025

• Empirical investigation of loudspeakers as test-targets for continuous-wave radar
  Frewer, Niklas; Tegowski, Bartosz; Hayek, Josef; Kölpin, Alexander
  26th International Radar Symposium, IRS 2025
  Publisher DOI
• Design of a microwave frontend for a trapped ion quantum computer
  Jaeger, Marvin; Riemschneider, Georg Frederik; Weiß, Nico; Tegowski, Bartosz; Kölpin, Alexander
  16th German Microwave Conference Gemic 2025
  Publisher DOI
• 3D-printed surface-mounted waveguide technology
  Tegowski, Bartosz; Langer, Dominik; Kölpin, Alexander
  16th German Microwave Conference Gemic 2025
  Publisher DOI
• Calibration of the self-radar-cross-section of continuous-wave radars
  Tegowski, Bartosz; Kölpin, Alexander
  IEEE Transactions on Microwave Theory and Techniques (in Press): (2025)
  Publisher DOI
• Compensation of self-RCS and IQ-demodulation imperfections of continuous-wave radar systems
  Tegowski, Bartosz; Kölpin, Alexander
  26th International Radar Symposium, IRS 2025
  Publisher DOI

2024

• A six-port-based tracking system for automated landing of fixed-wing UAVs
  Hübner, Kai Christian; Tegowski, Bartosz; Kölpin, Alexander
  25th International Microwave and Radar Conference, MIKON 2024
  Publisher DOI
• Integration approach for radar transceiver MMICs with integrated antennas enabling adaptability to customized passive frontend design
  Langer, Dominik; Albrecht, Nils Christian; Bartels, Frederike; Tegowski, Bartosz; Kölpin, Alexander
  IEEE/MTT-S International Microwave Symposium, IMS 2024
  Publisher DOI
• Accuracy limitations of interferometric radar owing to the radar cross section of its antenna
  Tegowski, Bartosz; Kölpin, Alexander
  IEEE Transactions on Microwave Theory and Techniques 72 (7): 4317-4324 (2024)
  Publisher DOI
• Empirical study on the antenna-dependent accuracy of continuous-wave radars
  Tegowski, Bartosz; Schulz, Björn; Kölpin, Alexander
  German Microwave Conference, GeMiC 2024
  Publisher DOI
• Multilayer substrate integrated waveguide six-port junctions with embedded resistive films
  Tegowski, Bartosz; Kölpin, Alexander
  International Journal of Microwave and Wireless Technologies (in Press): (2024)
  Open Access | Publisher DOI
• Near-field scattering phenomena in monostatic radar applications derived from physical optics
  Tegowski, Bartosz; Langer, Dominik; Wenzel, Marvin; Albrecht, Nils Christian; Kölpin, Alexander
  IEEE Transactions on Antennas and Propagation 73 (2): 1084-1094 (2025)
  Publisher DOI
• Nonlinear distortion effects of vibration-sensing interferometric radar systems due to self-RCS
  Tegowski, Bartosz; Kölpin, Alexander
  25th International Microwave and Radar Conference, MIKON 2024
  Publisher DOI
• Print! Place! Perform! : additively manufactured surface-mounted bandpass filter in X band
  Tegowski, Bartosz; Langer, Dominik; Sieganschin, Anton; Wenzel, Marvin; Kölpin, Alexander
  IEEE Microwave Magazine 25 (6): 80-87 (2024)
  Publisher DOI
• Width-constrained multilayer SIW components based on adjoined folded SIW transitions
  Tegowski, Bartosz; Jaschke, Thomas; Sieganschin, Anton; Jacob, Arne; Kölpin, Alexander
  German Microwave Conference, GeMiC 2024
  Publisher DOI

2023

• The Design Process for Monolithically Manufactured Millimeter-Wave Antenna Arrays Using Stereolithography 3D Printing
  Langer, Dominik; Tegowski, Bartosz; Albrecht, Nils Christian; Wenzel, Marvin; Kölpin, Alexander
  IEEE/MTT-S International Microwave Symposium (IMS 2023)
  Publisher DOI
• Miniaturization of folded circular SIW cavity filters
  Sieganschin, Anton; Tegowski, Bartosz; Kölpin, Alexander; Jacob, Arne
  International journal of microwave and wireless technologies 15 (6): 993-1000 (2023-05-05)
  Open Access | Publisher DOI
• A Compact Stacked SIW Six-Port Junction
  Tegowski, Bartosz; Kölpin, Alexander
  IEEE Microwave and Wireless Technology Letters 33 (5): 515-518 (2023-05)
  Publisher DOI
• A Transmission Line Approach for Rough Conductor Surface Impedance Analysis
  Tegowski, Bartosz; Jaschke, Thomas; Sieganschin, Anton; Jacob, Arne
  IEEE Transactions on Microwave Theory and Techniques 71 (2): 471-479 (2023-02-01)
  Publisher DOI
• Antenna Phase Center Determination Using a Six-Port-Based Direction-of-Arrival Detector
  Tegowski, Bartosz; Wenzel, Marvin; Kölpin, Alexander
  IEEE Transactions on Antennas and Propagation 71 (5): 4007-4016 (2023-05-01)
  Publisher DOI
• Compact SIW six-port with improved output matching and isolation
  Tegowski, Bartosz; Kölpin, Alexander
  53rd European Microwave Conference (EuMC 2023)
  Publisher DOI
• Heart Sound Detection Using an Ultra-Wideband FMCW Radar
  Wenzel, Marvin; Kölpin, Alexander; Tegowski, Bartosz; Albrecht, Nils Christian; Langer, Dominik
  IEEE/MTT-S International Microwave Symposium (IMS 2023)
  Publisher DOI

2022

• A Compact Filter With Dual-Mode Folded Circular SIW Cavities
  Sieganschin, Anton; Tegowski, Bartosz; Jacob, Arne
  51st European Microwave Conference, EuMC 2021 (2022)
  Publisher DOI
• A Heterodyne Transceiver With Integrated Calibrator for K/Ka-Band Phased Arrays
  Sieganschin, Anton; Albrecht, Nils Christian; Tegowski, Bartosz; Jaschke, Thomas; Waldhelm, Jan; Lamann, Nadja Janinka; Jacob, Arne
  51st European Microwave Conference, EuMC 2021 (2022)
  Publisher DOI
• Higher-Order Filters With Folded Circular SIW Cavities
  Sieganschin, Anton; Tegowski, Bartosz; Kölpin, Alexander; Jacob, Arne
  24th International Microwave and Radar Conference (MIKON 2022)
  Publisher DOI

2021

• Compact Diplexers With Folded Circular SIW Cavity Filters
  Sieganschin, Anton; Tegowski, Bartosz; Jaschke, Thomas; Jacob, Arne F.
  IEEE Transactions on Microwave Theory and Techniques 69 (1): 111-118 (2021-01)
  Publisher DOI