Microwave Liquid Crystal Technology
Open Access
- 5 September 2018
- Vol. 8 (9), 355
- https://doi.org/10.3390/cryst8090355
Abstract
Tunable Liquid Crystal (LC)-based microwave components are of increasing interest in academia and industry. Based on these components, numerous applications can be targeted such as tunable microwave filters and beam-steering antenna systems. With the commercialization of first LC-steered antennas for Ku-band e.g., by Kymeta and Alcan Systems, LC-based microwave components left early research stages behind. With the introduction of terrestrial 5G communications systems, moving to millimeter-wave communication, these systems can benefit from the unique properties of LC in terms of material quality. In this paper, we show recent developments in millimeter wave phase shifters for antenna arrays. The limits of classical high-performance metallic rectangular waveguides are clearly identified. A new implementation with dielectric waveguides is presented and compared to classic approaches.Keywords
Funding Information
- Deutsche Forschungsgemeinschaft (JA921/68-1, MA6281/4-1, MA6281/4-1)
- Bundesministerium für Wirtschaft und Technologie (50YB1113)
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