Near-field microwave microscopy. Capabilities. Application areas

Усанов, Д. А.; Skripal, A. V.

doi:10.1109/mikon.2012.6233532

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…Recently, a lot of research has studied methods for increasing the transmission efficiency of a small aperture by modifying its geometrical shape like C-shape, H-shape or bow-tie-shape in the design area of a nano-scale optical probe, i.e., in the design area of a near-field scanning optical microscope (NSOM) probe, for near-field optical applications such as optical data storage, nano-lithography, and nano-microscopy [3,4,5,6,7,8,9].…”

Section: Introductionmentioning

confidence: 99%

Experimental verification of electromagnetic scattering via two-dimensional periodic array of small resonant apertures

Cho

Yeo

Ko³

et al. 2017

IEICE Electron. Express

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Abstract:The transmission characteristics of a frequency selective surface (FSS) consisting of small resonant circular apertures with a ridge are related to the transmission cross section of a single ridged aperture, and the performance is verified experimentally. The FSS structure with a ridged circular aperture has a lower resonant frequency, enlarged fractional bandwidth, and a larger wavelength-to-periodicity ratio compared to an FSS with a conventional circular aperture. Experiment results show that the resonant frequency of the proposed FSS structure can be lowered from 13.98 GHz to 7.30 GHz (47.8%) by adding the ridge. Keywords: frequency selective surface, small resonant aperture, ridge, band pass filter, lower resonant frequency Classification: Microwave and millimeter-wave devices, circuits, and modules References

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Section: Introductionmentioning

confidence: 99%

Experimental verification of electromagnetic scattering via two-dimensional periodic array of small resonant apertures

Cho

Yeo

Ko³

et al. 2017

IEICE Electron. Express

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“…It was confirmed that the above-mentioned small resonant structures increased transmission power at the resonant frequency, compared with the simple circular or square structure, thereby improving the transmission efficiency. A resonant aperture structure with improved transmission efficiency can be applied to a frequency selective surface [11], a near-field probe [12,13], a waveguide limiter [14], optical data storage [15,16,17], and so on.…”

Section: Introductionmentioning

confidence: 99%

Design and experiment of miniaturized small resonant aperture using modified ridge structure

Yoo

Cho

Yeo

et al. 2017

IEICE Electron. Express

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A design method for a miniaturized small resonant aperture by modifying a ridge structure is presented, and its performance is verified experimentally. The proposed miniaturized aperture was designed by deforming the straight ridge structure of an H-shaped aperture with a two-step ridge of different lengths and widths, which resembles the capacitor symbol shape of the electric circuit. Experiment results show that the resonant frequency of the proposed aperture decreases from 5.06 GHz to 2.565 GHz (49.3%) compared to the conventional H-shaped aperture. Its transmission cross section increased by 3.78 times, and the aperture length-to-wavelength ratio is reduced to 0.09.

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“…서 론 최근에는 비접촉, 비파괴적으로 물체의 이미지와 물 성을 조사하기 위해 근접장 마이크로파 현미경(near-field microwave microscopy)에 관심이 모아지고 있다 [1]～ [5] . 근 접장 마이크로파 현미경의 구성은 참고문헌 [3] 감지되고, 이 감지 신호를 해석하여 물체의 이미지와 물 성에 대한 데이터를 얻게 된다.…”

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“…근 접장 마이크로파 현미경의 구성은 참고문헌 [3] 감지되고, 이 감지 신호를 해석하여 물체의 이미지와 물 성에 대한 데이터를 얻게 된다. 이 마이크로파 현미경에 서 주요한 핵심 부품은 도파관 탐침이며 [1], [4] , 물체에 의한 반사파를 해석하여 획득한 이미지에 대해 높은 해상도를 얻기 위해서는 도파관 탐침의 개구를 매우 작게 만들어 피측정 물체에 조사되는 전자파 에너지의 스팟 크기(spot size) 줄어야만 한다. 동시에 이런 소형 개구를 공진시켜 파가 잘 방사되게, 즉 개구의 투과 효율을 높일 수 있게 만들어야 한다 [1]～ [5] .…”

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Equivalent Circuit Analysis of a Rectangular Waveguide Probe with H-type Small Aperture

Ko¹,

Cho²

2014

The Journal of Korean Institute of Electromagnetic Engineering

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Equivalent circuits for the waveguide probe with H-shaped small aperture, as a key ingredient of near field microwave microscope, is described along with a working principle of the probe. Small rectangular or circular aperture in comparison with the wavelength behaves like the inductive element. So adding the ridged structure (corresponding to capacitive component) to the small aperture allows the transmission resonance to occur. For verification, we represents the equivalent circuit descriptions for the two types, ridged aperture and cavity types. The values of obtained by use of the equivalent circuit approaches are compared with those obtained by use of the available numerical software. The results are also experimentally verified.

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Near-field microwave microscopy. Capabilities. Application areas

Cited by 3 publications

References 5 publications

Experimental verification of electromagnetic scattering via two-dimensional periodic array of small resonant apertures

Experimental verification of electromagnetic scattering via two-dimensional periodic array of small resonant apertures

Design and experiment of miniaturized small resonant aperture using modified ridge structure

Equivalent Circuit Analysis of a Rectangular Waveguide Probe with H-type Small Aperture

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