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Reconfigurable Millimeter-Wave Components Based on Liquid Crystal Technology for Smart Applications

Polat, Ersin ; Tesmer, Henning ; Reese, Roland ; Nickel, Matthias ; Wang, Dongwei ; Schumacher, Peter ; Jakoby, Rolf ; Maune, Holger (2020)
Reconfigurable Millimeter-Wave Components Based on Liquid Crystal Technology for Smart Applications.
In: Crystals, 2020, 10 (5)
doi: 10.25534/tuprints-00013355
Article, Secondary publication, Publisher's Version

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Abstract

This paper presents recent development of tunable microwave liquid crystal (LC) components in the lower millimeter wave (mmW) regime up to theW-band. With the utilization of increasing frequency, conventional metallic waveguide structures prove to be impractical for LC-based components. In particular, the integration of the electric bias network is extremely challenging. Therefore, dielectric waveguides are a promising alternative to conventional waveguides, since electrodes can be easily integrated in the open structure of dielectric waveguides. The numerous subcategories of dielectric waveguides offer a high degree of freedom in designing smart millimeter wave components such as tunable phase shifters, filters and steerable antennas. Recent research resulted in many different realizations, which are analyzed in this paper. The first demonstrators of phased array antennas with integrated LC-based phase shifters are reviewed and compared. In addition, beam steering with a single antenna type is shown. Furthermore, the possibility to realize tunable filters using LC-filled dielectric waveguides is demonstrated.

Item Type: Article
Erschienen: 2020
Creators: Polat, Ersin ; Tesmer, Henning ; Reese, Roland ; Nickel, Matthias ; Wang, Dongwei ; Schumacher, Peter ; Jakoby, Rolf ; Maune, Holger
Type of entry: Secondary publication
Title: Reconfigurable Millimeter-Wave Components Based on Liquid Crystal Technology for Smart Applications
Language: English
Date: 2020
Year of primary publication: 2020
Publisher: MDPI
Journal or Publication Title: Crystals
Volume of the journal: 10
Issue Number: 5
DOI: 10.25534/tuprints-00013355
URL / URN: https://doi.org/10.3390/cryst10050346
Origin: Secondary publication via sponsored Golden Open Access
Abstract:

This paper presents recent development of tunable microwave liquid crystal (LC) components in the lower millimeter wave (mmW) regime up to theW-band. With the utilization of increasing frequency, conventional metallic waveguide structures prove to be impractical for LC-based components. In particular, the integration of the electric bias network is extremely challenging. Therefore, dielectric waveguides are a promising alternative to conventional waveguides, since electrodes can be easily integrated in the open structure of dielectric waveguides. The numerous subcategories of dielectric waveguides offer a high degree of freedom in designing smart millimeter wave components such as tunable phase shifters, filters and steerable antennas. Recent research resulted in many different realizations, which are analyzed in this paper. The first demonstrators of phased array antennas with integrated LC-based phase shifters are reviewed and compared. In addition, beam steering with a single antenna type is shown. Furthermore, the possibility to realize tunable filters using LC-filled dielectric waveguides is demonstrated.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-133557
Classification DDC: 600 Technology, medicine, applied sciences > 600 Technology
Divisions: 18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP)
Date Deposited: 24 Aug 2020 11:06
Last Modified: 02 Oct 2020 08:37
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