2025
313.
		
	
	
	A. Grathwohl,
	"UAV-borne synthetic aperture radar imaging of surface and subsurface objects",
	Dissertation,
	
	
	
		Aug.
		2025.
	
	
		
	
| DOI: | 10.18725/OPARU-57498 | 
| ISBN: | 978-3-948303-61-7 | 
312.
		
	
	T. Frey,
				
		
	
		
		
		
			
			
					J. Österle,
				
		
	
		
		
		
			
			
					M. Döring,
				
		
	
		
		
		
			
			
					C. Waldschmidt and
				
		
	
		
		
		
			
			
					T. Chaloun,
	"A Tensor-Based Holographic Multi-Feed Antenna Synthesis for MIMO Radar Applications",
	
	
	
	
	
	
	
		May
		2025.
	
	
	
		
	
| DOI: | 10.23919/EuCAP63536.2025.10999616 | 
| ISBN: | 978-88-31299-10-7 | 
311.
		
	
	T. Frey,
				
		
	
		
		
		
			
			
					A. Baader,
				
		
	
		
		
		
			
			
					M. Döring,
				
		
	
		
		
		
			
			
					C. Waldschmidt and
				
		
	
		
		
		
			
			
					T. Chaloun,
	"High Efficient Impedance Tensor Extraction Method for Arbitrarily Shaped Metasurface Elements", 
	
	
	
	
	
	
		May
		2025.
	
	
	
	
	
	
		
	
| DOI: | 10.1109/LAWP.2025.3567324 | 
310.
		
	
	M. Mueh,
				
		
	
		
		
		
			
			
					T. Grebner,
				
		
	
		
		
		
			
			
					S. Brandl,
				
		
	
		
		
		
			
			
					F. Junghanns,
				
		
	
		
		
		
			
			
					J. Soell and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Coherent Synthetic Aperture Radar (SAR) Imaging With a 1550-nm Optical Sensor", 
	
	IEEE Sensors Journal,
	vol. 12,
	
	
	pp. 21412 - 21423,
	
		Apr.
		2025.
	
	
	IEEE.
	
	
	
	
		
	
| DOI: | 10.1109/JSEN.2025.3562689 | 
| File: | https://doi.org/10.18725/OPARU-57354 | 
309.
		
	
	J. Kanz,
				
		
	
		
		
		
			
			
					C. Gesell,
				
		
	
		
		
		
			
			
					M. Vossiek and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Efficient Bistatic Radar Processing Using Subsampled FMCW Ramps"
	in 2025 16th German Microwave Conference (GeMiC),	
	
	
	
	
	
	
		Mar.
		2025.
	
	
	
		
	
| DOI: | 10.23919/GeMiC64734.2025.10979018 | 
| File: | https://doi.org/10.18725/OPARU-56751 | 
308.
		
	
	M. Döring,
				
		
	
		
		
		
			
			
					T. Frey,
				
		
	
		
		
		
			
			
					D. Schwarz,
				
		
	
		
		
		
			
			
					F. Matt,
				
		
	
		
		
		
			
			
					C. Waldschmidt and
				
		
	
		
		
		
			
			
					T. Chaloun,
	"A Millimeter-Wave Antenna Array with Tunable Element Coupling for Enhanced Scan Capabilities", 
	
	IEEE Open Journal of Antennas and Propagation,
	
	
	pp. 1-1,
	
		
		2025.
	
	
	
	
	
	
		
	
| DOI: | 10.1109/OJAP.2025.3561450 | 
307.
		
	
	M. Linder,
				
		
	
		
		
		
			
			
					D. Schmidt,
				
		
	
		
		
		
			
			
					D. Schwarz,
				
		
	
		
		
		
			
			
					N. Riese and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"A Sub-Aperture-Based Calibration Algorithm for MIMO Antenna Arrays", 
	
	IEEE Open Journal of Antennas and Propagation,
	vol. 6,
	
	no. 2,
	pp. 548-559,
	
		
		2025.
	
	
	
	
	
	
		
	
| DOI: | 10.1109/OJAP.2025.3537681 | 
306.
		
	
	D. Pfrommer,
				
		
	
		
		
		
			
			
					C. Waldschmidt and
				
		
	
		
		
		
			
			
					M. Hitzler,
	"Compact N-Way Recombining Wilkinson Power Dividers for SatCom Applications"
	in 2025 16th German Microwave Conference (GeMiC),	
	
	
	
	
	
	
		
		2025.
	
	
	
		
	
| DOI: | 10.23919/GeMiC64734.2025.10979103 | 
| File: | https://oparu.uni-ulm.de/items/e42fec4b-cfb3-41d1-a8db-3e7f840f6862 | 
305.
		
	
	D. Schwarz,
				
		
	
		
		
		
			
			
					M. Linder,
				
		
	
		
		
		
			
			
					V. Kienle,
				
		
	
		
		
		
			
			
					N. Riese and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Influence of Channel Count and Array Sparsity on the Detection Performance of 4D Imaging Radars", 
	
	IEEE Journal of Microwaves,
	vol. 5,
	
	no. 3,
	pp. 616-630,
	
		
		2025.
	
	
	
	
	
	
		
	
| DOI: | 10.1109/JMW.2025.3560661 | 
2024
304.
		
	
	J. Aguilar,
				
		
	
		
		
		
			
			
					D. Werbunat,
				
		
	
		
		
		
			
			
					V. Janoudi,
				
		
	
		
		
		
			
			
					C. Bonfert and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Uncoupled Digital Radars Creating a Coherent Sensor Network", 
	
	IEEE Journal of Microwaves,
	
	
	pp. 1-14,
	
		Jun.
		2024.
	
	
	
	
	
	
		
	
| DOI: | 10.1109/JMW.2024.3405633 | 
| Weblink: | https://ieeexplore.ieee.org/document/10557779 | 
303.
		
	
	C. Bonfert,
				
		
	
		
		
		
			
			
					E. Ruopp and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Improving SAR Imaging by Superpixel-Based Compressed Sensing and Backprojection Processing", 
	
	IEEE Transactions on Geoscience and Remote Sensing,
	vol. 62,
	
	
	pp. 1—12,
	
		Apr.
		2024.
	
	
	
	https://ieeexplore.ieee.org/document/10491303/.
	
	
		
	
| DOI: | 10.1109/TGRS.2024.3385027 | 
302.
		
	
	J. Kanz,
				
		
	
		
		
		
			
			
					C. Bonfert,
				
		
	
		
		
		
			
			
					R. Riekenbrauck and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Bistatic UAV-Based Repeater SAR for 3D Object Localization"
	in EUSAR 2024; 15th European Conference on Synthetic Aperture Radar,	
	
	
	
	
	
	
		Apr.
		2024.
	
	
	
		
	
| File: | https://doi.org/10.18725/OPARU-53904 | 
301.
		
	
	D. Schwarz,
				
		
	
		
		
		
			
			
					M. Linder,
				
		
	
		
		
		
			
			
					V. Kienle,
				
		
	
		
		
		
			
			
					C. Bonfert and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Time and Frequency Division Multiplexing in High-Resolution Imaging Radars with LO Feedthrough Topology"
	in ICMIM 2024 - International Conference on Microwaves for Intelligent Mobility,	
	
	Boppard,
	April 2024,
	Berlin - Offenbach:
	VDE VERLAG GmbH,
	
		Apr.
		2024,
	
	pp. 22-25.
	
		
	
| ISBN: | 978-3-8007-6364-1 | 
| File: | https://doi.org/10.18725/OPARU-53903 | 
300.
		
	
	D. Werbunat,
				
		
	
		
		
		
			
			
					J. Aguilar,
				
		
	
		
		
		
			
			
					M. Almarashly,
				
		
	
		
		
		
			
			
					V. Janoudi,
				
		
	
		
		
		
			
			
					S. Stephany,
				
		
	
		
		
		
			
			
					D. Gil Gaviria,
				
		
	
		
		
		
			
			
					A. C. Ulusoy and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"On the Synchronization of Uncoupled Multistatic PMCW Radars", 
	
	IEEE Transactions on Microwave Theory and Techniques,
	
	
	
	
		Feb.
		2024.
	
	
	
	
	
	
		
	
| DOI: | 10.1109/TMTT.2024.3359035 | 
| Weblink: | https://ieeexplore.ieee.org/document/10424003 | 
299.
		
	
	
	N. Riese,
				
		
	
		
		
		
			
			
					A. Diepolder,
				
		
	
		
		
		
			
			
					J. Kunz,
				
		
	
		
		
		
			
			
					M. Linder,
				
		
	
		
		
		
			
			
					C. Damm and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"3D-Printed Dielectric Waveguides for Multi-Band mm-Wave Applications"
	in 2024 54th European Microwave Conference (EuMC),	
	
	
	
	
	
	
		
		2024,
	
	pp. 212-215.
	
		
	
| DOI: | 10.23919/EuMC61614.2024.10732215 | 
| File: | https://doi.org/10.18725/OPARU-54532 | 
298.
		
	
	
	M. Linder,
				
		
	
		
		
		
			
			
					D. Schwarz,
				
		
	
		
		
		
			
			
					R. Bord,
				
		
	
		
		
		
			
			
					N. Riese and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"A High-Precision Approach to Eliminate Positioning Errors in Radar Calibrations"
	in 2024 18th European Conference on Antennas and Propagation (EuCAP),	
	
	
	
	
	
	
		
		2024,
	
	pp. 1-5.
	
		
	
| DOI: | 10.23919/EuCAP60739.2024.10501334 | 
297.
		
	
	M. Döring,
				
		
	
		
		
		
			
			
					N. Kästle,
				
		
	
		
		
		
			
			
					T. Frey,
				
		
	
		
		
		
			
			
					F. Matt,
				
		
	
		
		
		
			
			
					C. Waldschmidt and
				
		
	
		
		
		
			
			
					T. Chaloun,
	"A Low-Profile Wide-Scan Magneto-Electric Dipole Antenna for 5G mm-Wave Communications"
	in 2024 18th European Conference on Antennas and Propagation (EuCAP),	
	
	
	
	
	
	
		
		2024.
	
	
	
		
	
| DOI: | 10.23919/EuCAP60739.2024.10501568 | 
| File: | https://doi.org/10.18725/OPARU-52877 | 
296.
		
	
	S. Brandl,
				
		
	
		
		
		
			
			
					M. Mueh and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"A Modular System Design for Chip-Based Reflectarrays at Sub-THz Frequencies",
	
	54th European Microwave Conference (EuMC),
	
	
	
	
	
		
		2024.
	
	
	
		
	
| DOI: | 10.23919/EuMC61614.2024.10732733 | 
| File: | https://doi.org/10.18725/OPARU-55848 | 
295.
		
	
	D. Schwarz,
				
		
	
		
		
		
			
			
					M. Linder,
				
		
	
		
		
		
			
			
					R. Riekenbrauck,
				
		
	
		
		
		
			
			
					R. Bord and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Effects of Bumper Integration on Low-, Mid-, and High-Resolution Imaging Radars"
	in 2024 18th European Conference on Antennas and Propagation (EuCAP),	
	
	
	
	
	
	
		
		2024.
	
	
	
		
	
| DOI: | 10.23919/EuCAP60739.2024.10501513 | 
| File: | https://doi.org/10.18725/OPARU-52776 | 
294.
		
	
	
	M. Linder,
				
		
	
		
		
		
			
			
					R. Bord,
				
		
	
		
		
		
			
			
					D. Schwarz,
				
		
	
		
		
		
			
			
					N. Riese and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Efficient 2-D Array Calibration of Radar Sensors in the Near Field by Modal Wave Expansion"
	in 2024 54th European Microwave Conference (EuMC),	
	
	
	
	
	
	
		
		2024,
	
	pp. 708-711.
	
		
	
| DOI: | 10.23919/EuMC61614.2024.10732742 | 
293.
		
	
	
	M. Linder,
				
		
	
		
		
		
			
			
					D. Schwarz,
				
		
	
		
		
		
			
			
					N. Riese and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"On-The-Fly Self-Calibration for Automotive Radar Sensors Exploiting High Channel Counts"
	in ICMIM 2024; 7th IEEE MTT Conference,	
	
	
	
	
	
	
		
		2024,
	
	pp. 65-68.
	
	
292.
		
	
	V. Janoudi,
				
		
	
		
		
		
			
			
					P. Schoeder,
				
		
	
		
		
		
			
			
					T. Grebner,
				
		
	
		
		
		
			
			
					N. Appenrodt,
				
		
	
		
		
		
			
			
					J. Dickmann and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Signal Model for Coherent Processing of Uncoupled and Low Frequency Coupled MIMO Radar Networks", 
	
	IEEE Journal of Microwaves,
	vol. 4,
	
	no. 1,
	pp. 69-85,
	
		
		2024.
	
	
	
	
	
	
		
	
| DOI: | 10.1109/JMW.2023.3334757 | 
291.
		
	
	T. Grebner,
				
		
	
		
		
		
			
			
					R. Riekenbrauck and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Simultaneous Localization and Mapping (SLAM) for Synthetic Aperture Radar (SAR) Processing in the Field of Autonomous Driving", 
	
	IEEE Transactions on Radar Systems,
	vol. 2,
	
	
	pp. 47-66,
	
		
		2024.
	
	
	
	
	
	
		
	
| DOI: | 10.1109/TRS.2023.3347734 | 
| Weblink: | https://ieeexplore.ieee.org/document/10375529 | 
290.
		
	
	I. Ullmann,
				
		
	
		
		
		
			
			
					C. Bonfert,
				
		
	
		
		
		
			
			
					A. Grathwohl,
				
		
	
		
		
		
			
			
					M. A. Lahmeri,
				
		
	
		
		
		
			
			
					V. Mustieles-Pérez,
				
		
	
		
		
		
			
			
					J. Kanz,
				
		
	
		
		
		
			
			
					E. Sterk,
				
		
	
		
		
		
			
			
					F. Bormuth,
				
		
	
		
		
		
			
			
					R. Ghasemi,
				
		
	
		
		
		
			
			
					P. Fenske,
				
		
	
		
		
		
			
			
					M. Villano,
				
		
	
		
		
		
			
			
					R. Schober,
				
		
	
		
		
		
			
			
					R. F. H. Fischer,
				
		
	
		
		
		
			
			
					G. Krieger,
				
		
	
		
		
		
			
			
					C. Damm,
				
		
	
		
		
		
			
			
					C. Waldschmidt and
				
		
	
		
		
		
			
			
					M. Vossiek,
	"Towards Detecting Climate Change Effects With UAV-Borne Imaging Radars", 
	
	IEEE Journal of Microwaves,
	
	
	pp. 1-13,
	
		
		2024.
	
	
	
	
	
	
		
	
| DOI: | 10.1109/JMW.2024.3450015 | 
2023
289.
		
	
	D. Werbunat,
				
		
	
		
		
		
			
			
					B. Woischneck,
				
		
	
		
		
		
			
			
					J. Lerch,
				
		
	
		
		
		
			
			
					B. Schweizer,
				
		
	
		
		
		
			
			
					R. Michev,
				
		
	
		
		
		
			
			
					C. Bonfert,
				
		
	
		
		
		
			
			
					J. Hasch and
				
		
	
		
		
		
			
			
					C. Waldschmidt,
	"Multichannel Repeater for Coherent Radar Networks Enabling High-Resolution Radar Imaging", 
	
	IEEE Transactions on Microwave Theory and Techniques,
	
	
	
	
		Nov.
		2023.
	
	
	
	https://ieeexplore.ieee.org/document/10335758.
	
	
		
	
| DOI: | 10.1109/TMTT.2023.3326284 |