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In this paper, a frequency dispersion of transmission characteristics of shielded-flexible printed circuits (FPC) for differential-signaling is studied experimentally and numerical modeling based on an equivalent circuit model. Firstly, differential-mode impedance, the mixed-mode scattering parameters and eye-diagram are discussed. Secondly, the frequency dispersion of the transmission characteristics...
In this paper, a frequency dispersion of transmission characteristics of shielded-flexible printed circuits (FPC) for differential-signaling is studied experimentally and numerical modeling. Firstly, differential-mode impedance, the mixed-mode scattering parameters and eye-diagram are discussed. Secondly, frequency dispersion of transmission characteristics is discussed by using RLGC equivalent-circuit...
For differential-signaling system, the ideal balance or symmetrical topology cannot be established due to discontinuities at turnoff point (90-degree turn), so called bending, and hence, an imbalance component is excited. Therefore methodology and geometrical-structure for satisfying both SI and EMI performances are indispensable. In order to provide basic considerations for the realization of methods...
To provide the basic considerations for EM radiation from practical asymmetrical differential-paired lines with bend routing, this paper newly attempts to propose locally shielded differential-paired lines for establishing SI performance and suppressing imbalance component and EMI generated by differential-paired lines with bend (turnoff point) discontinuities. The conductive plane is placed on discontinuity...
For differential-signaling system, the ideal balance or symmetrical topology cannot be established due to bend (turnoff point) discontinuities, and hence, an imbalance component is excited. Therefore methodology and geometrical-structure for satisfying both SI and EMI performances are indispensable. In order to provide basic considerations for the realization of methods for predicting and suppressing...
To provide the basic considerations for establishment of predicting the EM radiation from practical differential-paired lines, this paper attempts to quantify the correlation between imbalance components and EM radiation from asymmetrical differential-paired line with different serpentine equi-distance routing. The differential-paired lines with different layouts were prepared for the discussion as...
For actual Differential-signaling (DS) techniques such as low-voltage differential-signaling (LVDS), the ideal balance or symmetrical topology cannot be established, and hence, an imbalance component is excited in practical high-density packaging systems. In this paper, we newly attempt to identify and quantify the frequency responses of the imbalance component and electromagnetic (EM) radiation from...
Negative group delay characteristics can be used to signal processing devices such as equalizer for compensation of the group delay of systems, and pulse compression circuit of radar systems. In this paper, to clarify negative group delay characteristics achieved by planar structure, we designed the Folded-Stepped Impedance Resonator (F-SIR) structure on printed circuit board (PCB), which has the...
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