A Study of Microwave Measurement System Using Optically Modulated Scattering TechniqueOptically Modulated Scattering 기법을 이용한 초고주파 측정 시스템에 관한 연구

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The accuracies of the conventional electric field measurements utilizing open-ended rectangular waveguide type of probe and coaxial type of probe are affected by a feeding cable and near-by conducting objects, which are causing distortion of the measured fields. In order to minimize the perturbation of microwave fields and improve the accuracies, the scattering technique have been popularly used for the rapid microwave fields measurement. The modulated component includes the amplitude and phase information that characterizes microwave fields at the location of the scatterer. Firstly, the new architecture of the automatic measurement system is proposed for the simultaneous measurement of the amplitude and phase of microwave fields with optically modulated scatterer. The conventional system for measurement of the modulated scattering fields has an unstable measurement ability and a measurement limitation in terms of a wide band frequency range due to the imperfection of in-phase and quadrature phase operation of the coupler. The measurement results of the proposed system are compared with those of the conventional system to demonstrate the superior performance with the phase prediction result in the near and far-field range and to validate performance of the proposed system. Secondly, the new technique for simultaneous measurement of co and cross-polarized components of microwave fields is presented. This technique is based on using dual-polarized scattering probes modulated at different frequencies and aligning two linearly polarized antennas orthogonally. Finally, microwave characteristics of indium bump for flip-chip bonding are investigated for the package of the photodiode to utilize the modulated scattering technique in microwave and millimeter wave regions. Because of several advantages compared to wire bonding, flip-chip bonding technique is increasingly used instead of wire bonding.
Advisors
Park, Seong-Ookresearcher박성욱researcher
Description
한국정보통신대학교 : 공학부,
Publisher
한국정보통신대학교
Issue Date
2005
Identifier
392472/225023 / 020024146
Language
eng
Description

학위논문(석사) - 한국정보통신대학교 : 공학부, 2005, [ iv, 120 p. ]

Keywords

modulated scattering technique; Antenna measurement; EM field measurement; 초고주파 필드 측정; 변조산란 기법; 안테나 측정

URI
http://hdl.handle.net/10203/55332
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=392472&flag=dissertation
Appears in Collection
School of Engineering-Theses_Master(공학부 석사논문)
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