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Obtaining the tunable band-notch in ultrawideband THz antenna using graphene nanoribbons
- Source :
- Optical Engineering. 59:1
- Publication Year :
- 2020
- Publisher :
- SPIE-Intl Soc Optical Eng, 2020.
-
Abstract
- An ultrawideband (UWB) antenna covering the lower terahertz band is designed and numerically analyzed. A number of higher-order modes are excited and merged to provide the UWB response. The band-notch is obtained by applying graphene nanoribbons at the top of the radiating metallic patch. The antenna response can be set with the tunable single/dual/triple band-notch characteristics depending on the size and location of the applied graphene nanoribbons. The notched frequency band can be tuned by changing the chemical potential of the graphene nanoribbons by keeping the cutoff frequencies of the antenna response unchanged. Moreover, the antenna radiates like a monopole throughout the passband with consistent radiation pattern, high gain, and radiation efficiency.
- Subjects :
- Materials science
Terahertz radiation
Frequency band
Physics::Optics
02 engineering and technology
01 natural sciences
Radiation pattern
law.invention
010309 optics
020210 optoelectronics & photonics
law
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
Physics::Chemical Physics
Passband
Computer Science::Information Theory
Condensed Matter::Other
business.industry
Graphene
General Engineering
Atomic and Molecular Physics, and Optics
Antenna efficiency
Optoelectronics
Antenna (radio)
business
Graphene nanoribbons
Subjects
Details
- ISSN :
- 00913286
- Volume :
- 59
- Database :
- OpenAIRE
- Journal :
- Optical Engineering
- Accession number :
- edsair.doi...........bf4fe95a120c1c3668b46a2becd92d99