TU Darmstadt / ULB / TUprints

Liquid Crystal Based Dielectric Waveguide Phase Shifters for Phased Arrays at W-Band

Reese, Roland ; Polat, Ersin ; Tesmer, Henning ; Strobl, Jonathan ; Schuster, Christian ; Nickel, Matthias ; Granja, Angel Blanco ; Jakoby, Rolf ; Maune, Holger (2019)
Liquid Crystal Based Dielectric Waveguide Phase Shifters for Phased Arrays at W-Band.
In: IEEE Access, 2019, 7
Article, Secondary publication, Publisher's Version

[img]
Preview
Text
reese.pdf
Copyright Information: CC BY 4.0 International - Creative Commons, Attribution.

Download (1MB) | Preview
Item Type: Article
Type of entry: Secondary publication
Title: Liquid Crystal Based Dielectric Waveguide Phase Shifters for Phased Arrays at W-Band
Language: English
Date: 29 October 2019
Place of Publication: Darmstadt
Year of primary publication: 2019
Journal or Publication Title: IEEE Access
Volume of the journal: 7
Corresponding Links:
Origin: Secondary publication via sponsored Golden Open Access
Abstract:

In this work, the feasibility of microwave liquid crystal based dielectric waveguide phased shifters is investigated in a phased rod antenna array for the first time. For this, a 1×4 rod antenna array is designed including the phase shifters as well as a cascaded E-plane power divider network. As core elements, the phase shifter are designed as continuously tunable subwavelength fibers, partially filled with a newly specifically synthesized microwave liquid crystal, exhibiting a maximum FoM 145°/dB at 102.5GHz. As proof-of-concept, a simplified electric biasing network is developed, demonstrating its beam steering capability by changing the scanning angle between 0°, -25° and +15° with three different voltage distributions. The antenna array is well matched throughout the complete W-band with a input reflection below -10 dB. The measured antenna gain is between 11.5 to 9.1 dBi at 85 GHz accompanied with a side lobe level between -12 to -7 dB, depending on the steering configuration.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-92260
Classification DDC: 600 Technology, medicine, applied sciences > 600 Technology
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics (IMP)
Date Deposited: 29 Oct 2019 15:01
Last Modified: 05 Dec 2023 11:02
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/9226
PPN: 454759274
Export:
Actions (login required)
View Item View Item