http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A Novel Transmission Line Characterization Based on Measurement Data Reconfirmation
Yungseon Eo(어영선) 한국전자파학회 2016 전자파기술 Vol.27 No.3
In the high-frequency characterizations of planar circuit components, measurement data may not be physical. It is mainly due to resonance effects concerned with discontinuities which are inevitable for a planar component characterization. In this paper, a novel accurate transmission line characterization method is presented that excludes the resonance effects based on measurement data reconfirmation. For the physically obvious data acquisition near the resonance frequencies of a transmission line, the additional lines with different line lengths are fabricated on the same substrate. The test transmission lines are characterized by using vector network analyzer (VNA) in 100 MHz to 26.5 GHz. It is shown that an accurate transmission line characterization can be achieved with the proposed measurement data reconfirmation technique.
어영선 漢陽大學校 工學技術硏究所 1998 工學技術論文集 Vol.7 No.1
A coupling noise due to a silicon substrate is presented. The coupling parameters between the transmission lines are extracted, taking the silicon substrate effects into account. Since the electromagnetic fields in the silicon-based IC interconnects are propagated with slow wave mode, effective dielectric constant and different ground planes with the multi-layer dielectric structures were employed for inductance and capacitance matrix determination. Then accurate signal transient simulations were performed with HSPICE by using the parameters. It was shown that the simulation results have excellent agreements with high-speed time domain measurements, i.e., TDR/TDT measurements.
어영선 漢陽大學校 工學技術硏究所 1999 工學技術論文集 Vol.8 No.1
전자 패키지의 고주파 효과를 고려한 파워 및 그라운드 평판에 대한 새로운 마이크로웨이브 회로 시뮬레이션 모델을 제시한다. 패키지의 평판에 대한 등가 회로는 그리드 형태로 모델하였고 각각의 셀에 대한 파라미터의 추출은 Fasthenry를 이용하였다. 제시된 평판 모델의 검중을 위해 측정한 S-파라미터 결과[2]와 full-wave 시뮬레이션을 통한 S-파라미터 결과를 모두 5-파라미터 영역에서 상호 비교한다. 마이크로웨이브 회로 시뮬레이션 모델을 이용하여 고주파 영역에서 문제가 될 수 있는 패키지의 불완전한 그라운드 및 파워 효과 등을 보다 정확히 예측할 수 있는 것을 보인다. A new microwave circuit simulation model of the power and ground plane of a package is presented. The equivalent circuit is modeled with grid cells. The circuit parameters of each cell were extracted by using Fasthenry. To verify the developed circuit model, its s-parameters are compared with the measured s-parameters[2] and the full-wave simulation-based s-parameters. Consequently, it is shown that our microwave circuit simulation model of the package can accurately predict imperfect ground/power effects under the high frequency operation of the electronic package.
A Novel Transmission Line Characterization Based on Measurement Data Reconfirmation
어영선,Eo, Yungseon The Korean Institute of Electromagnetic Engineerin 2016 전자파기술 Vol.27 No.3
In the high-frequency characterizations of planar circuit components, measurement data may not be physical. It is mainly due to resonance effects concerned with discontinuities which are inevitable for a planar component characterization. In this paper, a novel accurate transmission line characterization method is presented that excludes the resonance effects based on measurement data reconfirmation. For the physically obvious data acquisition near the resonance frequencies of a transmission line, the additional lines with different line lengths are fabricated on the same substrate. The test transmission lines are characterized by using vector network analyzer (VNA) in 100 MHz to 26.5 GHz. It is shown that an accurate transmission line characterization can be achieved with the proposed measurement data reconfirmation technique.
Compact CAD Models for the Signal Integrity Verification of Multi-Coupled Transmission Lines
KIM, Hyunsik,EO, Yungseon The Institute of Electronics, Information and Comm 2010 IEICE transactions on fundamentals of electronics, Vol.93 No.4
<P>A novel modal signal decoupling algorithm for multi-coupled transmission lines is developed. Since the proposed method exploits a set of basis vectors associated with the characteristic impedances of the transmission line system, these multi-coupled signals can be efficiently decoupled regardless of dielectric media and conductors. Thus, compact forms of the signal integrity verification CAD models for multi-coupled transmission lines can be readily determined. It is shown that the analytical models are in excellent agreement with those obtained with SPICE simulation and its computation time is much faster than the conventional macro model (W-model) in the order of two.</P>
Dongchul Kim,Yungseon Eo IEEE 2009 IEEE TRANSACTIONS ON ADVANCED PACKAGING Vol.32 No.1
<P>Coupled transmission lines are experimentally characterized by using 4-port <I>S</I>-parameter measurements in a broad frequency band (up to 20 GHz). Test patterns are designed and fabricated by using a ball grid array (BGA) package process. Symmetrically coupled transmission lines are decoupled into two eigen modes that can be readily determined from the measured <I>S</I>-parameters. Then transmission line parameters and signal transient waveforms are directly determined by using the measured <I>S</I>-parameters. It is shown that not only are the transmission line parameters frequency-dependent, but also the frequency-variant effects and nonideal characteristics of transmission lines have a substantial effect on signal transients and crosstalk noises.</P>