Novel model of 2:1 balance-to-unbalance transmission-line transformer

Kuo, Ching Chuan; Kuo, Ming Ying; Kuo, Mei Shong

doi:10.1049/el:19951346

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…Later Kuo and Kahighi [7] employed computational fluid dynamics (CFD) to simulate flow in pipe junctions. Prediction of pressure drop compared to data was reasonable for 90…”

Section: Introductionmentioning

confidence: 99%

Fluid flow in an impacting symmetrical tee junction: I single‐phase flow and experimental

Doherty

Murphy

Spedding

2009

Asia-Pacific J Chem Eng

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Experiments were conducted on single-phase fluid flow in a horizontal 90• symmetrical impacting tee junction of 0.026 m i.d. The impacting geometry was chosen because, unlike the combining tee, the pressure loss of the system was not amenable to modelling. Various methods of presentation of the junction pressure drop were attempted and a simple dimensionless model suggested based on the inlet Reynolds number and the equivalent length parameter le/d. 

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“…Later Kuo and Kahighi [7] employed computational fluid dynamics (CFD) to simulate flow in pipe junctions. Prediction of pressure drop compared to data was reasonable for 90…”

Section: Introductionmentioning

confidence: 99%

Fluid flow in an impacting symmetrical tee junction: I single‐phase flow and experimental

Doherty

Murphy

Spedding

2009

Asia-Pacific J Chem Eng

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“…In order to improve the restrain characteristics, the weighted values determined by the window function are subsequently processed. The processed results should satisfy the following equation [11]:…”

Section: Methodsmentioning

confidence: 99%

“…2019, 9, 2349 2 of 14 interferometry [5], Fourier transform profilometry [6], random tilt phase-shifting [7], and 3D profilometry based on modulation measurement [8]. White-light interferometry and confocal microscopy have also been used for optical thickness and profile measurement of transparent plates [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…For example, these include the excess fraction method, digital phase-measuring interferometry [5], Fourier transform profilometry [6], random tilt phase-shifting [7], and 3D profilometry based on modulation measurement [8]. White-light interferometry and confocal microscopy have also been used for optical thickness and profile measurement of transparent plates [9][10][11][12]. Depending on the spectrum of the light source used, the methods applied to measure thickness variation can be classified as monochromatic or spectral.…”

Section: Introductionmentioning

confidence: 99%

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Algorithm for Surfaces Profiles and Thickness Variation Measurement of a Transparent Plate Using a Fizeau Interferometer with Wavelength Tuning

Sun

Zheng

et al. 2019

Applied Sciences

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An interferogram obtained from a transparent plate contains information on the profiles of both surfaces and on the thickness variation. The present work is devoted to the processing of interferograms of this type. The processing technique is based on a 36-step algorithm developed by the authors for characterization of transparent plates having approximately equal reflections from both sides. The algorithm utilizes weighted multi-step phase shifting that enables one not only separately to extract the front and rear surface profiles together with the thickness variation of the tested plate but also to suppress the coupling errors between the higher harmonics and phase-shift deviation. The proposed measuring method was studied on a wavelength tunable Fizeau interferometer. The tested sample had an optical thickness and surface profile deviations equal to 0.51 µm, 1.38 µm and 0.89 µm, respectively. According to the results obtained using 10 repeated measurements, the root mean square (RMS) errors for determining both surface profiles did not exceed 1.5 nm. Experimental results show that the setup and presented 36-step algorithm are suitable for the measurement of a transparent plate of arbitrary thickness.

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180° hybrid using a novel planar balun on suspended substrate for beam forming network applications

Moghaddam

Ahmadi

2020

Int J RF Microw Comput Aided Eng

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Novel model of 2:1 balance-to-unbalance transmission-line transformer

Cited by 4 publications

References 3 publications

Fluid flow in an impacting symmetrical tee junction: I single‐phase flow and experimental

Fluid flow in an impacting symmetrical tee junction: I single‐phase flow and experimental

Algorithm for Surfaces Profiles and Thickness Variation Measurement of a Transparent Plate Using a Fizeau Interferometer with Wavelength Tuning

180° hybrid using a novel planar balun on suspended substrate for beam forming network applications

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