Analytical framework of small-gap photoconductive dipole antenna using equivalent circuit model

Malhotra, Isha; Thakur, Prabhat; Pandit, Shweta; Jha, Kumud Ranjan; Singh, Ghanshyam

doi:10.1007/s11082-017-1175-4

Cited by 20 publications

(3 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to equations (7) and (9), in the micro-structured photoconductive antenna, the width L 2 and length L 4 of the SRR determine the value of the inductance L, and the width G of the SRR gap governs the value of the capacitance C. Accordingly, these parameters affect the terahertz radiation power and resonant frequency of the antenna. We used the simulation method described in the previous section based on the parameters shown in Table 1 [46], [50], [51]. The effect of the following structural parameters was examined: width L 2 and length L 4 of SRR, gap width G of SRR, and gap width L d of the antenna.…”

Section: Resultsmentioning

confidence: 99%

The Impact of Structural Parameters of Split-Ring Resonators on the Terahertz Radiation Characteristics of Micro-Structured Photoconductive Antennas: A Simulation Study

Xiong

et al. 2020

IEEE Photonics J.

View full text Add to dashboard Cite

In this study, we have theoretically designed a micro-structured photoconductive antenna based on the combination of split-ring resonator (SRR) and dipole photoconductive antenna. Further, we have used numerical simulations to prove that the proposed antenna can enhance the terahertz radiation characteristics. According to the equivalent circuit model analysis, the terahertz radiation power and the resonance frequency of this antenna were found to be closely related with the structural parameters of the SRR. A numerical model was established to simulate the effect of the structural parameters of SRR on the terahertz radiation characteristics of the proposed antenna. The results indicated that an increase in the width and length of SRR caused an increase in the peak power intensity and a decrease in the resonance frequency. Moreover, as the gap width of SRR was increased, the peak power intensity was decreased and the resonance frequency was increased. Furthermore, the terahertz radiation power increased with increase in the gap width of antennas. Overall, we show that high-power terahertz radiation sources with specific frequency can be obtained by optimizing the structural parameters of SRR, and such sources are potentially useful in a variety of fields such as biomedicine, material analysis, and detection systems.

show abstract

Section: Resultsmentioning

confidence: 99%

The Impact of Structural Parameters of Split-Ring Resonators on the Terahertz Radiation Characteristics of Micro-Structured Photoconductive Antennas: A Simulation Study

Xiong

et al. 2020

IEEE Photonics J.

View full text Add to dashboard Cite

show abstract

“…4, modeling the interplay of the antenna with both, sub-THz sources or receivers in the frontend, and the channel describing the environment surrounding the antenna, benefits from both, a simple and insightful antenna representation. On one hand, examples for device-antenna modeling to understand both the THz-generation, as well as desirable operation points, can be found in [60], [61], [62], [63]. Essential system parameters such as, e.g., the equivalent isotropic radiated power (EIRP), can on the other hand be used for channel modeling and system performance evaluation.…”

Section: Benedikt Sievert Jan Taro Svejda Andreas Rennings and Daniel...mentioning

confidence: 99%

THz Measurements, Antennas, and Simulations: From the Past to the Future

et al. 2023

View full text Add to dashboard Cite

In recent years, terahertz (THz) systems have become an increasingly popular area of research thanks to their unique properties such as extremely high data rates towards Tb/s, submillimeter localization accuracy, high resolution remote sensing of materials, and remarkable advances in photonics and electronics technologies. This article traces the progress of THz measurements, antennas and simulations, from historical milestones to the current state of research and provides an outlook on the remaining challenges.INDEX TERMS Channel modeling, history, MTT 70th anniversary special issue, on-chip antennas, raytracing, THz communications, THz measurements and simulations.This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination.

show abstract

“…A compact planar antenna sources with on-chip fabrication and high directivity in order to achieve large DoF is the prospective demand for the THz imaging application. Therefore, in [139] the authors have presented an analytical procedure employing explicit mathematical expression leading to the physical behavior of the small-gap photoconductive dipole antenna to fulfill such applications demand. The effects of biased lines on the antenna performance parameters are also discussed with the help of equivalent circuit model.…”

Section: Thz Antennasmentioning

confidence: 99%

Terahertz antenna technology for imaging applications: a technical review

Malhotra

Jha

Singh

2018

Int. J. Microw. Wireless Technol.

Self Cite

View full text Add to dashboard Cite

The terahertz (THz) regime of the electromagnetic spectrum is rich with the emerging possibilities in imaging applications with unique characteristics to screening for weapons, explosives and bio-hazards, imaging of concealed objects, water content, and skin, and these advantages can be harnessed by using the effective THz sources and detectors. In THz imaging systems, the pulsed THz sources and detectors find unique applications and thus we have emphasized on re-visiting these kinds of systems. Several novel imaging techniques which exploit the distinctive properties of the THz systems have been presented. Moreover, the THz antenna is one of the most important components of a THz imaging system as it plays a significant role in both impedance matching and power source. Therefore, the recent developments in THz antenna design for imaging applications are reviewed and the potential challenges of such THz systems are investigated. The photoconductive antennas form the basis of many THz imaging and spectroscopy systems and finds promising applications in various scientific fields. However, for the imaging applications, there is a requirement of planar and compact THz antenna sources with on-chip fabrication and high directivity in order to achieve large depth-of-field for better image resolution. Therefore, the key modalities of improving photoconductive dipole antennas performance are identified for imaging applications. Also, the ways to improve the directivity of the photoconductive dipole antenna are discussed. The main purpose of this review is to provide an assortment of all relevant literature to bring researchers up-to-date on the current state-of-the-art and potential challenges of THz antenna technology for imaging applications.

show abstract

Analytical framework of small-gap photoconductive dipole antenna using equivalent circuit model

Cited by 20 publications

References 30 publications

The Impact of Structural Parameters of Split-Ring Resonators on the Terahertz Radiation Characteristics of Micro-Structured Photoconductive Antennas: A Simulation Study

The Impact of Structural Parameters of Split-Ring Resonators on the Terahertz Radiation Characteristics of Micro-Structured Photoconductive Antennas: A Simulation Study

THz Measurements, Antennas, and Simulations: From the Past to the Future

Terahertz antenna technology for imaging applications: a technical review

Contact Info

Product

Resources

About