Publications 2025
Script list Publications
(1) Characterization of HBT-based Avalanche Noise Sources using Standard Test Structures for Measurement of Transistor Scattering Parameters
E. Bernardini, G. Schiavolini, G. Orecchini, G. Fischer, C. Carta, F. Alimenti
Proc. IEEE Radio and Wireless Week (RWW 2025), 50 (2025)
(AMX IP)
(2) A 4-bit 40 GS/s Power Efficient DAC for 6G Communicatio Systems
A.S. Elsayed, P. Ostrovskyy, C. Carta
Proc. 16th German Microwave Confernace (GeMIC 2025), 661 (2025)
DOI: 10.23919/GeMiC64734.2025.10979014, (6G-RIC)
(3) Varactors for Integrated RF Circuits in a 130 nm BiCMOS Technology
M. Elviretti, A. Malignaggi, N. Pelagalli, H. Rücker, L. Menicucci Salamanca, Ch. Wipf, C. Carta, A. Mai
Proc. 16th German Microwave Conference (GeMiC 2025), 368 (2025)
DOI: 10.23919/GeMiC64734.2025.10979116, (SICHER)
(4) A Compact 245-310 GHz Balun in 130-nm SiGe BiCMOS Technology
A. Franzese, B. Sütbas, V. Ertürk, T. Mausolf, D. Bierbüsse, R. Negra, E. Shokrolahzade, M. Spirito, C. Carta
Proc. IEEE Radio and Wireless Symposium (RWS 2025), 61 (2025)
(Open 6G Hub)
(5) A High-Gain 240-325-GHz Power Amplifier for IEEE 802.15.3d Applications in an Advanced BiCMOS Technology
A. Gadallah, A. Malignaggi, B. Sütbas, H. Rücker, D. Kissinger, M.H. Eissa
Proc. 25th IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF 2025), 19 (2025)
(Open 6G Hub)
(6) Hardware-Software Platform Enabling Joint Communication and Radar Sensing at 25 GHz with 1 GHz Bandwidth
S. George, P. Sen, M. Ramzan, M. Umar, Y. Richhariya, J. Adler, C. Carta
Proc. IEEE/MTT-S International Microwave Symposium (IMS 2025), 25 (2025)
(7) A Fully-Integrated Four-Channel Phased Array D-Band Transceiver Achieving 10 GBit/s at 10 m
C. Herold, A. Karakuzulu, A. Malignaggi, M. Scheide, N. Maletic, K. Krishnegowda, C. Carta
Proc. 20th IEEE Radio & Wireless Week (RWW 2025), 30 (2025)
(6G-RIC)
(8) Compact and Broadband Up and Down Conversion Mixers for Frequency Interleaving Systems
C. Herold, M. Kravchenko, A. Malignaggi, C. Carta
Proc. 16th German Microwave Conference (GeMiC 2025), 646 (2025)
DOI: 10.23919/GeMiC64734.2025.10978986, (6G-RIC)
(9) 44 GHz Bandwidth Optical Receiver Monolithically Integrated in a SiGe ePIC BiCMOS Technology
F. Iseini, N. Pelagalli, A. Malignaggi, A. Peczek, C. Carta, G. Kahmen
20th IEEE Radio & Wireless Week (RWW 2025), 12 (2025)
(100G)
(10) Broadband and Power-Efficient Optoelectronic Transmitter Monolithically Integrated in a SiGe BiCMOS ePIC Technology
F. Iseini, A. Malignaggi, A. Peczek, C. Carta, G. Kahmen
Proc. IEEE/MTT-S International Microwave Symposium (IMS 2025), 741 (2025)
(100G)
(11) Broadband and Compact 112 Gbit/s Transimpedance Amplifier in a SiGe Copper Backend Technology
F. Iseini, A. Malignaggi, F. Korndörfer, C. Carta, G. Kahmen
Proc. 16th German Microwave Conference (GeMiC 2025), 601 (2025)
DOI: 10.23919/GeMiC64734.2025.10979095, (100G)
(12) A W-Band Down Conversion Mixer in EPIC 250 nm BiCMOS Technology for Monolithic Optoelectronic Radio Applications
E. Jimenez Tuero, F. Korndörfer, A. Malignaggi, F. Gerfers, C. Carta
Proc. 16th German Microwave Conference (GeMiC 2025), 128 (2025)
DOI: 10.23919/GeMiC64734.2025.10979145, (100G)
(13) Optimal Galvanic Cell Design for Powering Ingestible Devices in Varying Gastrointestinal Conditions
C. Kitchen, V. Erturk, A. Swaminathan, S. Sangodoyin
ACS Applied Energy Materials 8(10), 6545 (2025)
DOI: 10.1021/acsaem.5c00463
Energy harvesting using galvanic cells in the gastrointestinal (GI) tract can provide supplementary power and prolong the service life of ingestible devices. This paper explores the impact of electrode type, dimension, and varying gastrointestinal (GI) conditions on the performance of galvanic cells for powering ingestible devices. In vitro experiments were conducted with varying cathodes and anode combinations in synthetic gastric fluid (SGF) under a load resistance sweep to measure the voltage of the galvanic cell. Eighteen tests assessed the peak power, energy capacity, and longevity of each electrode pair. Galvanic cell performance was also evaluated under simulated 1 GI conditions, including varying pH, salt concentration, added foreign substances, and simulated intestinal conditions. Pt and Pd cathodes showed the highest peak power and energy capacity, while Mo was cost-effective for transient applications. Mg was optimal for short-term use, while Zn or the AZ31B Mg alloy was preferred for long-term applications. Energy generation decreased with increasing pH but improved with higher salt concentration. Large substances in gastric fluid hindered performance, and energy generation in intestinal fluids was less efficient. Larger cathode-to-anode size ratios increased efficiency, while larger anodes provided greater longevity. This study successfully characterized the effects of electrode combinations, GI conditions, and dimensions on the performance of galvanic cells, offering insight into the design of supplementary power sources for ingestible devices. These findings aid the development of galvanic cells for short-term and long-term applications in ingestible devices.
(14) A 434 MHz Low-Power Receiver System Based on a Switched Passive Input Network with Surface Acoustic Wave Resonator
G. Meller, M. Methfessel, F. Protze, J. Wagner, F. Ellinger
Proc. 16th German Microwave Conference (GeMiC 2025), 183 (2025)
DOI: 10.23919/GeMiC64734.2025.10979051, (WakeMeUp)
(15) Low Insertion Loss D-Band SP4T Switch using Reverse Saturated SiGe HBTs
N. Moroni, A. Malignaggi, C. Herold, C. Carta
Proc. 16th German Microwave Conference (GeMiC 2025), 443 (2025)
DOI: 10.23919/GeMiC64734.2025.10979062, (6G-RIC)
(16) TX to RX Compact Leakage Cancellation Impedance Tuner for 60 GHz Monostatic Doppler Radar
A. Mushtaq, T. Mausolf, W. Miesch, N. Uddin, W. Winkler, D. Kissinger
IEEE Journal of Microwaves 5(1), 84 (2025)
DOI: 10.1109/JMW.2024.3516476
Monostatic radar shares a single antenna between the transmitter (TX) and receiver (RX) and offers an advantage of the reduced sensor size. However, due to the limited isolation of the coupler, the TX signal leaking into the RX significantly degrades the performance of the monostatic doppler radar. This paper presents the design of an ultra-compact impedance tuner (IT) which is connected to the lumped Rat-Race coupler to minimize the TX to RX leakage signal. The IT offers 5-bit phase control and 8-bit magnitude control via the Serial Peripheral Interface (SPI); moreover, it uses SiGe transistors in reverse saturation to enhance the impedance tuning performance. The size of the IT is only 0.04 mm2 and its power consumption is 4 mW at 3.3V power supply. A two-channel 60 GHz monostatic doppler phased array radar chip has been designed and fabricated in 130 nm SiGe BiCMOS technology for vital signs monitoring application. The measured TX to RX isolation due to the Rat-Race coupler is 22 dB; moreover, IT provides the additional isolation of 27 dB, giving total TX to RX isolation of 49 dB at 60 GHz. The design, simulation and measurements of the IT and its measured leakage cancellation performance is reported in this paper.
(17) A 50 Gb/s Rad-Hard Quad TIA IC for Onboard Satellite Interconnects
P. Ostrovskyy, A. Lujambio, D. Lobato
Proc. IEEE International Symposium on Circuits and Systems (ISCAS 2025), (2025)
DOI: 10.1109/ISCAS56072.2025.11044295, (SIPhoDiAS)
(18) Impact of the Series Resistance on Switching Characteristics of 1T1R HfO2-based RRAM Devices
E. Perez, D. Maldonado, S. Pechmann, K.D.S. Reddy, M. Uhlmann, A. Hagelauer, J.B. Roldan, Ch. Wenger
Proc. 15th Spanish Conference on Electron Devices (CDE 2025), (2025)
DOI: 10.1109/CDE66381.2025.11038868, (KI-IoT)
(19) A Review and Performance Comparison of Key Radar Transceiver Building Blocks at J-Band in IHP SG13G2 and SG13G3 BiCMOS Technologies
B. Sütbas, R. Hasan, A. Gadallah, M.H. Eissa, C. Carta
Proc. 16th German Microwave Conference (GeMiC 2025), 362 (2025)
DOI: 10.23919/GeMiC64734.2025.10979135, (iCampus II)
(20) A V-Band VSPS using Deep-Saturated SiGe HBTs with 0.34 dB Amplitude and 0.7° Phase Errors
B. Sütbas, M.H. Eissa, G. Kahmen
Proc. 25th IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF 2025), 23 (2025)
(iCampus II)
(21) A V-Band VSPS using Deep-Saturated SiGe HBTs with 0.34 dB Amplitude and 0.7° Phase Errors
B. Sütbas, M.H. Eissa, G. Kahmen
Proc. 25th IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF 2025), 23 (2025)
(iCampus)
(22) Medizinradar für häusliche Krankenpflege
B. Sütbas
99 Zukunftsobjekte aus der Lausitz, 1st Edition, Editor: J. Staemmler, Ch.Links Verlag, 185 (2025)
(iCampus)
(23) Medizinradar für häusliche Krankenpflege
B. Sütbas
99 Zukunftsobjekte aus der Lausitz, 1st Edition, Editor: J. Staemmler, Ch.Links Verlag, 185 (2025)
(iCampus II)
E. Bernardini, G. Schiavolini, G. Orecchini, G. Fischer, C. Carta, F. Alimenti
Proc. IEEE Radio and Wireless Week (RWW 2025), 50 (2025)
(AMX IP)
(2) A 4-bit 40 GS/s Power Efficient DAC for 6G Communicatio Systems
A.S. Elsayed, P. Ostrovskyy, C. Carta
Proc. 16th German Microwave Confernace (GeMIC 2025), 661 (2025)
DOI: 10.23919/GeMiC64734.2025.10979014, (6G-RIC)
(3) Varactors for Integrated RF Circuits in a 130 nm BiCMOS Technology
M. Elviretti, A. Malignaggi, N. Pelagalli, H. Rücker, L. Menicucci Salamanca, Ch. Wipf, C. Carta, A. Mai
Proc. 16th German Microwave Conference (GeMiC 2025), 368 (2025)
DOI: 10.23919/GeMiC64734.2025.10979116, (SICHER)
(4) A Compact 245-310 GHz Balun in 130-nm SiGe BiCMOS Technology
A. Franzese, B. Sütbas, V. Ertürk, T. Mausolf, D. Bierbüsse, R. Negra, E. Shokrolahzade, M. Spirito, C. Carta
Proc. IEEE Radio and Wireless Symposium (RWS 2025), 61 (2025)
(Open 6G Hub)
(5) A High-Gain 240-325-GHz Power Amplifier for IEEE 802.15.3d Applications in an Advanced BiCMOS Technology
A. Gadallah, A. Malignaggi, B. Sütbas, H. Rücker, D. Kissinger, M.H. Eissa
Proc. 25th IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF 2025), 19 (2025)
(Open 6G Hub)
(6) Hardware-Software Platform Enabling Joint Communication and Radar Sensing at 25 GHz with 1 GHz Bandwidth
S. George, P. Sen, M. Ramzan, M. Umar, Y. Richhariya, J. Adler, C. Carta
Proc. IEEE/MTT-S International Microwave Symposium (IMS 2025), 25 (2025)
(7) A Fully-Integrated Four-Channel Phased Array D-Band Transceiver Achieving 10 GBit/s at 10 m
C. Herold, A. Karakuzulu, A. Malignaggi, M. Scheide, N. Maletic, K. Krishnegowda, C. Carta
Proc. 20th IEEE Radio & Wireless Week (RWW 2025), 30 (2025)
(6G-RIC)
(8) Compact and Broadband Up and Down Conversion Mixers for Frequency Interleaving Systems
C. Herold, M. Kravchenko, A. Malignaggi, C. Carta
Proc. 16th German Microwave Conference (GeMiC 2025), 646 (2025)
DOI: 10.23919/GeMiC64734.2025.10978986, (6G-RIC)
(9) 44 GHz Bandwidth Optical Receiver Monolithically Integrated in a SiGe ePIC BiCMOS Technology
F. Iseini, N. Pelagalli, A. Malignaggi, A. Peczek, C. Carta, G. Kahmen
20th IEEE Radio & Wireless Week (RWW 2025), 12 (2025)
(100G)
(10) Broadband and Power-Efficient Optoelectronic Transmitter Monolithically Integrated in a SiGe BiCMOS ePIC Technology
F. Iseini, A. Malignaggi, A. Peczek, C. Carta, G. Kahmen
Proc. IEEE/MTT-S International Microwave Symposium (IMS 2025), 741 (2025)
(100G)
(11) Broadband and Compact 112 Gbit/s Transimpedance Amplifier in a SiGe Copper Backend Technology
F. Iseini, A. Malignaggi, F. Korndörfer, C. Carta, G. Kahmen
Proc. 16th German Microwave Conference (GeMiC 2025), 601 (2025)
DOI: 10.23919/GeMiC64734.2025.10979095, (100G)
(12) A W-Band Down Conversion Mixer in EPIC 250 nm BiCMOS Technology for Monolithic Optoelectronic Radio Applications
E. Jimenez Tuero, F. Korndörfer, A. Malignaggi, F. Gerfers, C. Carta
Proc. 16th German Microwave Conference (GeMiC 2025), 128 (2025)
DOI: 10.23919/GeMiC64734.2025.10979145, (100G)
(13) Optimal Galvanic Cell Design for Powering Ingestible Devices in Varying Gastrointestinal Conditions
C. Kitchen, V. Erturk, A. Swaminathan, S. Sangodoyin
ACS Applied Energy Materials 8(10), 6545 (2025)
DOI: 10.1021/acsaem.5c00463
Energy harvesting using galvanic cells in the gastrointestinal (GI) tract can provide supplementary power and prolong the service life of ingestible devices. This paper explores the impact of electrode type, dimension, and varying gastrointestinal (GI) conditions on the performance of galvanic cells for powering ingestible devices. In vitro experiments were conducted with varying cathodes and anode combinations in synthetic gastric fluid (SGF) under a load resistance sweep to measure the voltage of the galvanic cell. Eighteen tests assessed the peak power, energy capacity, and longevity of each electrode pair. Galvanic cell performance was also evaluated under simulated 1 GI conditions, including varying pH, salt concentration, added foreign substances, and simulated intestinal conditions. Pt and Pd cathodes showed the highest peak power and energy capacity, while Mo was cost-effective for transient applications. Mg was optimal for short-term use, while Zn or the AZ31B Mg alloy was preferred for long-term applications. Energy generation decreased with increasing pH but improved with higher salt concentration. Large substances in gastric fluid hindered performance, and energy generation in intestinal fluids was less efficient. Larger cathode-to-anode size ratios increased efficiency, while larger anodes provided greater longevity. This study successfully characterized the effects of electrode combinations, GI conditions, and dimensions on the performance of galvanic cells, offering insight into the design of supplementary power sources for ingestible devices. These findings aid the development of galvanic cells for short-term and long-term applications in ingestible devices.
(14) A 434 MHz Low-Power Receiver System Based on a Switched Passive Input Network with Surface Acoustic Wave Resonator
G. Meller, M. Methfessel, F. Protze, J. Wagner, F. Ellinger
Proc. 16th German Microwave Conference (GeMiC 2025), 183 (2025)
DOI: 10.23919/GeMiC64734.2025.10979051, (WakeMeUp)
(15) Low Insertion Loss D-Band SP4T Switch using Reverse Saturated SiGe HBTs
N. Moroni, A. Malignaggi, C. Herold, C. Carta
Proc. 16th German Microwave Conference (GeMiC 2025), 443 (2025)
DOI: 10.23919/GeMiC64734.2025.10979062, (6G-RIC)
(16) TX to RX Compact Leakage Cancellation Impedance Tuner for 60 GHz Monostatic Doppler Radar
A. Mushtaq, T. Mausolf, W. Miesch, N. Uddin, W. Winkler, D. Kissinger
IEEE Journal of Microwaves 5(1), 84 (2025)
DOI: 10.1109/JMW.2024.3516476
Monostatic radar shares a single antenna between the transmitter (TX) and receiver (RX) and offers an advantage of the reduced sensor size. However, due to the limited isolation of the coupler, the TX signal leaking into the RX significantly degrades the performance of the monostatic doppler radar. This paper presents the design of an ultra-compact impedance tuner (IT) which is connected to the lumped Rat-Race coupler to minimize the TX to RX leakage signal. The IT offers 5-bit phase control and 8-bit magnitude control via the Serial Peripheral Interface (SPI); moreover, it uses SiGe transistors in reverse saturation to enhance the impedance tuning performance. The size of the IT is only 0.04 mm2 and its power consumption is 4 mW at 3.3V power supply. A two-channel 60 GHz monostatic doppler phased array radar chip has been designed and fabricated in 130 nm SiGe BiCMOS technology for vital signs monitoring application. The measured TX to RX isolation due to the Rat-Race coupler is 22 dB; moreover, IT provides the additional isolation of 27 dB, giving total TX to RX isolation of 49 dB at 60 GHz. The design, simulation and measurements of the IT and its measured leakage cancellation performance is reported in this paper.
(17) A 50 Gb/s Rad-Hard Quad TIA IC for Onboard Satellite Interconnects
P. Ostrovskyy, A. Lujambio, D. Lobato
Proc. IEEE International Symposium on Circuits and Systems (ISCAS 2025), (2025)
DOI: 10.1109/ISCAS56072.2025.11044295, (SIPhoDiAS)
(18) Impact of the Series Resistance on Switching Characteristics of 1T1R HfO2-based RRAM Devices
E. Perez, D. Maldonado, S. Pechmann, K.D.S. Reddy, M. Uhlmann, A. Hagelauer, J.B. Roldan, Ch. Wenger
Proc. 15th Spanish Conference on Electron Devices (CDE 2025), (2025)
DOI: 10.1109/CDE66381.2025.11038868, (KI-IoT)
(19) A Review and Performance Comparison of Key Radar Transceiver Building Blocks at J-Band in IHP SG13G2 and SG13G3 BiCMOS Technologies
B. Sütbas, R. Hasan, A. Gadallah, M.H. Eissa, C. Carta
Proc. 16th German Microwave Conference (GeMiC 2025), 362 (2025)
DOI: 10.23919/GeMiC64734.2025.10979135, (iCampus II)
(20) A V-Band VSPS using Deep-Saturated SiGe HBTs with 0.34 dB Amplitude and 0.7° Phase Errors
B. Sütbas, M.H. Eissa, G. Kahmen
Proc. 25th IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF 2025), 23 (2025)
(iCampus II)
(21) A V-Band VSPS using Deep-Saturated SiGe HBTs with 0.34 dB Amplitude and 0.7° Phase Errors
B. Sütbas, M.H. Eissa, G. Kahmen
Proc. 25th IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF 2025), 23 (2025)
(iCampus)
(22) Medizinradar für häusliche Krankenpflege
B. Sütbas
99 Zukunftsobjekte aus der Lausitz, 1st Edition, Editor: J. Staemmler, Ch.Links Verlag, 185 (2025)
(iCampus)
(23) Medizinradar für häusliche Krankenpflege
B. Sütbas
99 Zukunftsobjekte aus der Lausitz, 1st Edition, Editor: J. Staemmler, Ch.Links Verlag, 185 (2025)
(iCampus II)
