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Erschienen in: Optical and Quantum Electronics 4/2023

01.04.2023

Isolation control for implementing the single dielectric resonator based tunable THz MIMO antenna and filter

verfasst von: Nishtha, Rajveer Singh Yaduvanshi, Gaurav Varshney

Erschienen in: Optical and Quantum Electronics | Ausgabe 4/2023

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Abstract

The coupling between the ports of a two-port device implemented based on a single dielectric resonator (DR) of silicon material can be controlled to develop the terahertz multi-input-multi-output (MIMO) antenna and a filter. The ground plane of device is modified by engraving a circular slot for obtaining the function of a two-port MIMO dielectric resonator antenna with isolation between the ports as 18.3 dB. The radiating surface of DR is then coated with graphene material to further enhance the level of isolation up to 40.91 dB. Graphene coating also provides the tunable antenna response by varying the applied external DC field on graphene. The antenna can offer pattern diversity with envelop correlation coefficient less than 0.01 and diversity gain 9.94 in the passband. The isolation of this two-port antenna can further be enhanced up to 49 dB by covering the graphene layer with metal coating. Moreover, the coupled power between the ports of the device can be controlled to implement a bandpass filter by engraving a circular slot in graphene layer and filling it with metal. The amount of the power coupled between the ports of the filter can be controlled by varying the chemical potential of graphene.

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Metadaten
Titel
Isolation control for implementing the single dielectric resonator based tunable THz MIMO antenna and filter
verfasst von
Nishtha
Rajveer Singh Yaduvanshi
Gaurav Varshney
Publikationsdatum
01.04.2023
Verlag
Springer US
Erschienen in
Optical and Quantum Electronics / Ausgabe 4/2023
Print ISSN: 0306-8919
Elektronische ISSN: 1572-817X
DOI
https://doi.org/10.1007/s11082-023-04623-0

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