TY - GEN A1 - Hipp, Susanne T1 - Designing steerable antenna arrays using simulation T2 - GeMIC 2020 N2 - Antenna arrays are one possibility to design a steerable antenna. Designing an antenna array is a challenging task, where simulation can help to reduce the design complexity. Simulating a complete array can be computational expensive, therefore designing the array is often broken in several task. The first goal is to design and optimize a single antenna element followed by an optimization of this antenna element while considering the vicinity of further equal elements. A unit cell approach is a feasible and easy way to accomplish this task. This approach already considers parameter such as active element pattern and radiation pattern angles. As soon as the unit cell optimization, emulating an infinite array, is finished, the real array with a finite size is simulated, especially considering edge elements and parameters such as excitation patterns or active and passive elements. Due to the high simulation effort at this stage optimization should be kept to a minimum and high performance computing might be required. Finally, a feeding network and different excitations for various beam patterns can be investigated using combined methods to reduce the simulation effort. KW - Antennengruppe KW - Entwurf KW - Simulation Y1 - 2020 ER - TY - CHAP A1 - Rasp, Franziska A1 - Eberlein, Ernst A1 - Perner, Bastian A1 - Roth-Mandutz, Elke A1 - Hipp, Susanne T1 - Enhanced 5G Sidelink Ranging Based on Carrier Aggregation T2 - 2023 13th International Conference on Indoor Positioning and Indoor Navigation (IPIN), Nuremberg, Germany, 25-28 September 2023 N2 - Radio access network based positioning and ranging technologies become more and more important for autonomous driving. Positioning on the 5G Sidelink (SL) is discussed in Release 18 (2022-2024) of the Third Generation Partnership Project. For accurate timing-based ranging, a high temporal and spatial resolution is fundamental. The bandwidth for 5G SL positioning is limited due to sharing the existing SL resources with communication. Therefore, we send the positioning reference signal on two separate Component Carriers, i.e. we use a fragmented spectrum. We introduce a two step algorithm for estimating the time of arrival using the inflection point method. We proved a fragmented spectrum can achieve the same accuracy as a continuous spectrum. KW - Sidelink KW - 5G mobile communications KW - Distance measurement KW - Ranging KW - Positioning Y1 - 2023 SN - 9798350320114 U6 - https://doi.org/10.1109/IPIN57070.2023.10332548 SP - 1 EP - 6 PB - IEEE ER - TY - GEN A1 - Hipp, Susanne T1 - Small antennas in huge environments - simulation using hybrid methods T2 - Workshop des ITG-Fachausschuss HF1: Innovative Beamforming Antennas Y1 - 2022 ER - TY - JOUR A1 - Marterer, Verena A1 - Radouchová, Michaela A1 - Soukup, Radek A1 - Hipp, Susanne A1 - Blecha, Tomáš T1 - Wearable textile antennas: investigation on material variants, fabrication methods, design and application JF - Fashion and Textiles N2 - With the ongoing miniaturization of wireless devices, the importance of wearable textiles in the antenna segment has increased significantly in recent years. Due to the widespread utilization of wireless body sensor networks for healthcare and ubiquitous applications, the design of wearable antennas offers the possibility of comprehensive monitoring, communication, and energy harvesting and storage. This article reviews a number of properties and benefits to realize comprehensive background information and application ideas for the development of lightweight, compact and low-cost wearable patch antennas. Furthermore, problems and challenges that arise are addressed. Since both electromagnetic and mechanical specifications must be fulfilled, textile and flexible antennas require an appropriate trade-off between materials, antenna topologies, and fabrication methods—depending on the intended application and environmental factors. This overview covers each of the above issues, highlighting research to date while correlating antenna topology, feeding techniques, textile materials, and contacting options for the defined application of wearable planar patch antennas. KW - Wearable communication KW - Textile antenna KW - Patch antenna KW - Design requirements KW - Smart textiles KW - E-textiles Y1 - 2024 U6 - https://doi.org/10.1186/s40691-023-00369-1 VL - 11 PB - Springer Open ER -