Patch antenna coupled 0.2THz TUNNETT oscillators

Balasekaran, Sundararajan; Endo, Katsumi; Tanabe, Tadao; Oyama, Yutaka

doi:10.1016/j.sse.2010.07.006

Cited by 13 publications

(6 citation statements)

References 8 publications

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“…21 Recent research has focused on advancements in THz photoconductive antennas, THz horn antennas, THz lens antennas, THz microstrip antennas, and THz on-chip antennas. [22][23][24][25][26] In addition, metamaterials, artificial structures with unique electromagnetic properties, have found extensive use across various spectra, including microwave, THz, and optic. These materials possess negative permittivity and permeability, exhibiting a left-hand characteristic.…”

Section: Introductionmentioning

confidence: 99%

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Developing wideband antenna based on the metamaterial and dielectric silicon load for terahertz spectrum

Sharma,

Ebrahimi,

Zarrabi

et al. 2024

Opt. Eng.

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Terahertz (THz) antenna with a wide bandwidth and high Q factor is interesting for various applications, including 6G applications and THz sensing, and controlling the surface current of the antenna is known as a technique for bandwidth enhancement. The slot antenna with a metasurface is a good candidate for this aim. We have suggested a multilayer slot antenna with a metamaterial load to provide a wide bandwidth, which covers the 0.38 to 0.57 THz with a bandwidth of 40%. The metamaterial loads make various paths for the current on the surface of the antenna, which makes it possible to achieve a wider bandwidth. The proposed antenna has a gain of 4 dBi. To achieve a higher bandwidth, the dielectric silicon (Si) load is placed over the metasurface. The result shows that the height and form of the Si element can impact the bandwidth of the antenna. To modify the results of the antenna, the shape, height, and width of the dielectric load over the antenna are examined. The antenna bandwidth is enhanced, and it covers 0.371 to 0.616 THz with a 49% bandwidth. The proposed antenna is simulated with the full-wave time-domain technique of finite integrated technique.

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Section: Introductionmentioning

confidence: 99%

“…Recent research has focused on advancements in THz photoconductive antennas, THz horn antennas, THz lens antennas, THz microstrip antennas, and THz on-chip antennas 22 – 26 …”

Section: Introductionmentioning

confidence: 99%

Developing wideband antenna based on the metamaterial and dielectric silicon load for terahertz spectrum

Sharma,

Ebrahimi,

Zarrabi

et al. 2024

Opt. Eng.

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show abstract

“…They are usually flat in their structure. The patch antennas can be coupled with oscillators (Balasekaran et al , 2010). When the patch antennas are used at the microwave frequencies, magnetodielectric composite is used with ferrite inclusions as substrates (Borah and Bhattacharyya, 2012).…”

Section: Introductionmentioning

confidence: 99%

Patch antenna design optimization using opposition based grey wolf optimizer and map-reduce framework

Guttula

Nandanavanam²

2020

DTA

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Purpose Microstrip patch antenna is generally used for several communication purposes particularly in the military and civilian applications. Even though several techniques have been made numerous achievements in several fields, some systems require additional improvements to meet few challenges. Yet, they require application-specific improvement for optimally designing microstrip patch antenna. The paper aims to discuss these issues. Design/methodology/approach This paper intends to adopt an advanced meta-heuristic search algorithm called as grey wolf optimization (GWO), which is said to be inspired by the hunting behaviour of grey wolves, for the design of patch antenna parameters. The searching for the optimal design of the antenna is paced up using the opposition-based solution search. Moreover, the proposed model derives a nonlinear objective model to aid the design of the solution space of antenna parameters. After executing the simulation model, this paper compares the performance of the proposed GWO-based microstrip patch antenna with several conventional models. Findings The gain of the proposed model is 27.05 per cent better than WOAD, 2.07 per cent better than AAD, 15.80 per cent better than GAD, 17.49 per cent better than PSAD and 3.77 per cent better than GWAD model. Thus, it has proved that the proposed antenna model has attained high gain, leads to cause superior performance. Originality/value This paper presents a technique for designing the microstrip patch antenna, using the proposed GWO algorithm. This is the first work utilizes GWO-based optimization for microstrip patch antenna.

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“…It has been reported that there are possibilities of low production costs and excellent performance in THz detection, such as tunability, [6−11] operating at room temperature [12] and a relatively low value of the noise equivalent power. [13−15] In order to improve the performance of THz detectors, a great deal of attention has focused on the development of THz antennas for applications in THz detection technology, such as bowtie antenna, [16] rectangular microstrip patch antenna, [17] and other types of antennas. [18] Recently, Panasonic Corporation reported a resonant detection in a nanogate high electron mobility transistor.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of terahertz coupling efficiency by improved antenna design in GaN/AlGaN high electron mobility transistor detectors

Sun

Zhang

et al. 2012

Chinese Phys. B

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An optimized micro-gated terahertz detector with novel triple resonant antenna is presented. The novel resonant antenna operates at room temperature and shows more than a 700% increase in photocurrent response compared to the conventional bowtie antenna. In finite-difference-time-domain simulations, we found the performance of the self-mixing GaN/AlGaN high electron mobility transistor detector is mainly dependent on the parameters Lgs (the gap between the gate and the source/drain antenna) and Lw (the gap between the source and drain antenna). With the improved triple resonant antenna, an optimized micrometer-sized AlGaN/GaN high electron mobility transistor detector can achieve a high responsivity of 9.45 × 102 V/W at a frequency of 903 GHz at room temperature.

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Patch antenna coupled 0.2THz TUNNETT oscillators

Cited by 13 publications

References 8 publications

Developing wideband antenna based on the metamaterial and dielectric silicon load for terahertz spectrum

Developing wideband antenna based on the metamaterial and dielectric silicon load for terahertz spectrum

Patch antenna design optimization using opposition based grey wolf optimizer and map-reduce framework

Enhancement of terahertz coupling efficiency by improved antenna design in GaN/AlGaN high electron mobility transistor detectors

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