Ridge Gap Waveguide Based Liquid Crystal Phase Shifter
In this paper, the gap waveguide technology is examined for packaging liquid crystal (LC) in tunable microwave devices. For this purpose, a line based passive phase shifter is designed and implemented in a ridge gap waveguide (RGW) topology and filled with LC serving as functional material. The inhe...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9076009/ |
| _version_ | 1830089853071523840 |
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| author | Matthias Nickel Alejandro Jimenez-Saez Prannoy Agrawal Ahmed Gadallah Andrea Malignaggi Christian Schuster Roland Reese Henning Tesmer Ersin Polat Dongwei Wang Peter Schumacher Rolf Jakoby Dietmar Kissinger Holger Maune |
| author_facet | Matthias Nickel Alejandro Jimenez-Saez Prannoy Agrawal Ahmed Gadallah Andrea Malignaggi Christian Schuster Roland Reese Henning Tesmer Ersin Polat Dongwei Wang Peter Schumacher Rolf Jakoby Dietmar Kissinger Holger Maune |
| author_sort | Matthias Nickel |
| collection | DOAJ |
| description | In this paper, the gap waveguide technology is examined for packaging liquid crystal (LC) in tunable microwave devices. For this purpose, a line based passive phase shifter is designed and implemented in a ridge gap waveguide (RGW) topology and filled with LC serving as functional material. The inherent direct current (DC) decoupling property of gap waveguides is used to utilize the waveguide surroundings as biasing electrodes for tuning the LC. The bed of nails structure of the RGW exhibits an E-field suppression of 76 dB in simulation, forming a completely shielded device. The phase shifter shows a maximum figure of merit (FoM) of 70 °/dB from 20 GHz to 30 GHz with a differential phase shift of 387° at 25 GHz. The insertion loss ranges from 3.5 dB to 5.5 dB depending on the applied biasing voltage of 0 V to 60 V. |
| first_indexed | 2024-12-16T16:52:51Z |
| format | Article |
| id | doaj.art-2ee47657a9884bfd8645c6c0c6ef2e87 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T16:52:51Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-2ee47657a9884bfd8645c6c0c6ef2e872022-12-21T22:23:58ZengIEEEIEEE Access2169-35362020-01-018778337784210.1109/ACCESS.2020.29895479076009Ridge Gap Waveguide Based Liquid Crystal Phase ShifterMatthias Nickel0https://orcid.org/0000-0003-2144-3444Alejandro Jimenez-Saez1https://orcid.org/0000-0003-0468-1352Prannoy Agrawal2https://orcid.org/0000-0003-1481-9466Ahmed Gadallah3https://orcid.org/0000-0003-3057-493XAndrea Malignaggi4Christian Schuster5https://orcid.org/0000-0002-1007-6602Roland Reese6https://orcid.org/0000-0002-2924-6800Henning Tesmer7Ersin Polat8Dongwei Wang9https://orcid.org/0000-0002-0310-4193Peter Schumacher10https://orcid.org/0000-0002-8175-9910Rolf Jakoby11Dietmar Kissinger12https://orcid.org/0000-0002-9698-4432Holger Maune13Institute of Microwave Engineering and Photonics, Technische Unversität Darmstadt, Darmstadt, GermanyInstitute of Microwave Engineering and Photonics, Technische Unversität Darmstadt, Darmstadt, GermanyInstitute of Microwave Engineering and Photonics, Technische Unversität Darmstadt, Darmstadt, GermanyIHP-Leibniz-Institut fü innovative Mikroelektronik, Im Technologiepark 25, Frankfurt, GermanyIHP-Leibniz-Institut fü innovative Mikroelektronik, Im Technologiepark 25, Frankfurt, GermanyInstitute of Microwave Engineering and Photonics, Technische Unversität Darmstadt, Darmstadt, GermanyInstitute of Microwave Engineering and Photonics, Technische Unversität Darmstadt, Darmstadt, GermanyInstitute of Microwave Engineering and Photonics, Technische Unversität Darmstadt, Darmstadt, GermanyInstitute of Microwave Engineering and Photonics, Technische Unversität Darmstadt, Darmstadt, GermanyInstitute of Microwave Engineering and Photonics, Technische Unversität Darmstadt, Darmstadt, GermanyInstitute of Microwave Engineering and Photonics, Technische Unversität Darmstadt, Darmstadt, GermanyInstitute of Microwave Engineering and Photonics, Technische Unversität Darmstadt, Darmstadt, GermanyInstitute of Electronic Devices and Circuits, Ulm University, Ulm, GermanyInstitute of Microwave Engineering and Photonics, Technische Unversität Darmstadt, Darmstadt, GermanyIn this paper, the gap waveguide technology is examined for packaging liquid crystal (LC) in tunable microwave devices. For this purpose, a line based passive phase shifter is designed and implemented in a ridge gap waveguide (RGW) topology and filled with LC serving as functional material. The inherent direct current (DC) decoupling property of gap waveguides is used to utilize the waveguide surroundings as biasing electrodes for tuning the LC. The bed of nails structure of the RGW exhibits an E-field suppression of 76 dB in simulation, forming a completely shielded device. The phase shifter shows a maximum figure of merit (FoM) of 70 °/dB from 20 GHz to 30 GHz with a differential phase shift of 387° at 25 GHz. The insertion loss ranges from 3.5 dB to 5.5 dB depending on the applied biasing voltage of 0 V to 60 V.https://ieeexplore.ieee.org/document/9076009/Liquid crystals (LC’s)tunable phase shifterphased arraygap waveguidebed of nails |
| spellingShingle | Matthias Nickel Alejandro Jimenez-Saez Prannoy Agrawal Ahmed Gadallah Andrea Malignaggi Christian Schuster Roland Reese Henning Tesmer Ersin Polat Dongwei Wang Peter Schumacher Rolf Jakoby Dietmar Kissinger Holger Maune Ridge Gap Waveguide Based Liquid Crystal Phase Shifter IEEE Access Liquid crystals (LC’s) tunable phase shifter phased array gap waveguide bed of nails |
| title | Ridge Gap Waveguide Based Liquid Crystal Phase Shifter |
| title_full | Ridge Gap Waveguide Based Liquid Crystal Phase Shifter |
| title_fullStr | Ridge Gap Waveguide Based Liquid Crystal Phase Shifter |
| title_full_unstemmed | Ridge Gap Waveguide Based Liquid Crystal Phase Shifter |
| title_short | Ridge Gap Waveguide Based Liquid Crystal Phase Shifter |
| title_sort | ridge gap waveguide based liquid crystal phase shifter |
| topic | Liquid crystals (LC’s) tunable phase shifter phased array gap waveguide bed of nails |
| url | https://ieeexplore.ieee.org/document/9076009/ |
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