Dual-band metamaterial absorbers at terahertz frequency based on gold/parylene-C/silicide structure

2013 ◽  
Author(s):  
Yongzheng Wen ◽  
Wei Ma ◽  
Joe Bailey ◽  
Guy Matmon ◽  
Xiaomei Yu ◽  
...  
Keyword(s):  
Dual Band ◽  
Terahertz Frequency ◽  
Parylene C ◽  
Metamaterial Absorbers

Polarization-independent dual-band terahertz metamaterial absorbers based on gold/parylene-C/silicide structure

2013 ◽  
Vol 52 (19) ◽  
pp. 4536 ◽  
Author(s):  
Yongzheng Wen ◽  
Wei Ma ◽  
Joe Bailey ◽  
Guy Matmon ◽  
Xiaomei Yu ◽  
...  
Keyword(s):  
Dual Band ◽  
Parylene C ◽  
Metamaterial Absorbers ◽  
Polarization Independent

scholarly journals Right-Angle Shaped Elements as Dual-Band Metamaterial Absorber in Terahertz

2019 ◽  
Vol 10 (3) ◽  
pp. 233-241
Author(s):  
Salman Daniel ◽  
Prince Bawuah
Keyword(s):  
Electromagnetic Wave ◽  
Numerical Simulations ◽  
Metamaterial Absorber ◽  
Terahertz Range ◽  
Dual Band ◽  
Angle Of Incidence ◽  
Wide Range ◽  
State Of Polarization ◽  
Potential Applications ◽  
Metamaterial Absorbers

AbstractMetamaterial absorbers display potential applications in the field of photonics and have been investigated extensively during the last decade. We propose a dual-band resonant metamaterial absorber with right-angle shaped elements (RAEs) in the terahertz range based on numerical simulations. The absorber remains insensitive to a wide range of incidence angles (0°–70°) by showing a minimum absorbance of ~80% at 70°. Furthermore, the proposed absorber is highly independent on any state of polarization of the incidence electromagnetic wave due to the high absorbance, i.e., greater than 80%, recorded for the considered polarization states. To further comprehend the slight variations in absorbance as a function of change in the angle of incidence, the impedance of the structure has been critically examined. The metamaterial absorber is simple in design, and we provide a possible path of fabrication.

scholarly journals Design of dual-band polarization controllable metamaterial absorber at terahertz frequency

2020 ◽  
Vol 17 ◽  
pp. 103077 ◽  
Author(s):  
Ben-Xin Wang ◽  
Yuanhao He ◽  
Nianxi Xu ◽  
Xiaoyi Wang ◽  
Yanchao Wang ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Terahertz Frequency

scholarly journals Composite metamaterials with dual-band magnetic resonances in the terahertz frequency regime

2009 ◽  
Vol 42 (11) ◽  
pp. 115420 ◽  
Author(s):  
Ming Li ◽  
Zhenchao Wen ◽  
Jinxin Fu ◽  
Xu Fang ◽  
Yaomin Dai ◽  
...  
Keyword(s):  
Dual Band ◽  
Terahertz Frequency ◽  
Frequency Regime ◽  
Magnetic Resonances

Single and dual band 77/95/110 GHz metamaterial absorbers on flexible polyimide substrate

2011 ◽  
Vol 99 (26) ◽  
pp. 264101 ◽  
Author(s):  
Pramod K. Singh ◽  
Konstantin A. Korolev ◽  
Mohammed N. Afsar ◽  
Sameer Sonkusale
Keyword(s):  
Dual Band ◽  
Polyimide Substrate ◽  
Metamaterial Absorbers

scholarly journals Design and Fabrication of Metamaterial Absorbers Used for RF-ID

2020 ◽  
Vol 58 (2) ◽  
pp. 131-136 ◽  
Author(s):  
Yo-Han Ryu ◽  
Sung-Soo Kim
Keyword(s):  
Reflection Loss ◽  
Radio Frequency Identification ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Incidence Angle ◽  
Copper Film ◽  
Circuit Board ◽  
Dual Band ◽  
Substrate Thickness ◽  
Metamaterial Absorbers

Radio frequency identification (RF-ID) uses electromagnetic fields to automatically identify and track tags attached to objects. In response to the need to suppress the electromagnetic interference between adjacent RF-ID equipment or systems, this study aims to achieve a thin and multi-resonance absorber using metamaterials composed of patterned grids on a grounded dielectric substrate in the frequency region of UHF and microwaves. A computational tool (ANSYS HFSS) was used to model and estimate the reflection coefficient and surface current distribution. The samples used to measure reflection loss were fabricated by the printed circuit board (PCB) method in which a copper film was deposited on both sides of a photosensitized board. The reflection loss was measured using a free space measurement system, composed of a pair of horn antennas and network analyzer. The grid-patterned metamaterial absorbers exhibited dual-band absorption peaks at 0.88 GHz and 2.45 GHz with a small substrate thickness (about 3.7 mm) that can be usefully applied to electromagnetic compatibility in RF-ID system. Magnetic coupling is achieved via antiparallel currents in the grid conductor on the top layer and the ground conductor on the bottom layer. Since the magnetic response is influenced by the dimension of the resonators, it is possible to achieve two resonances by scaling the resonating structures. The metamaterial absorbers also exhibited good oblique incidence performance. A high level of absorption (above 10 dB) was maintained at up to 30 degrees of incidence angle for both TE and TM polarization.

scholarly journals Design Double Layers Structure Based Dual Band Metamaterial Absorbers for Stealth Applications

2019 ◽  
Vol 14 (22) ◽  
pp. 8315-8320
Author(s):  
Omar Fadhil Abdullah ◽  
Orass Abdulhadi Hussein ◽  
Shihab A. Shawkat ◽  
Khalid Saeed Lateef Al-Badri
Keyword(s):  
Dual Band ◽  
Double Layers ◽  
Metamaterial Absorbers

Conical dielectric resonator antenna for terahertz applications

Frequenz ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Rajveer S. Yaduvanshi ◽  
MSIT Nishtha
Keyword(s):  
Radiation Pattern ◽  
Optical Sensors ◽  
Dielectric Resonator ◽  
Comprehensive Analysis ◽  
Dual Band ◽  
Dielectric Resonator Antenna ◽  
Terahertz Frequency ◽  
High Data ◽  
Dynamic Impedance ◽  
Terahertz Spectrum

AbstractConical Terahertz DRA (dielectric resonator antenna) have been designed and investigated at terahertz spectrum i.e. 10 THz. Lower terahertz frequency band is useful for high data speed communication and upper band is used for optical sensors and free space wireless communications. Novelty in this work is to open up research in. terahertz. A unique geometry based dual band terahertz DRA with mathematical formulations has been proposed. The comprehensive analysis in terahertz regime have been worked out with S11, VSWR, radiation pattern and efficiency using conical TDRA. The conical terahertz DRA is designed at 10 THz frequency with 4.9 dBi, gain with bore sight radiation pattern. The equivalent circuit of conical terahertz DRA have been evaluated for dynamic impedance showing frequency dependence nature.

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