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ANSOFT Q3D TRANING - ntuemc.tw

ANSOFT Q3D TRANING . Introduction HFSS Q3D. 3D EM Analysis R/L/C/G Extraction S-parameter Model 0. -5. -10. magnitude [dB]. -15. -20. -25. S11. -30. S21. -35. 0 1 2 3 4 5 6 7 8 9 10. Frequency [GHz]. Quasi-static or full-wave techniques Measure the size of the interconnect in units of wavelength! Size < /10, use quasi-static solvers. Output circuit model in RLGC. > /10, and/or radiation important, use full-wave solvers. Size Output S, Y, and Z parameters and fields. Wavelength issues low frequencies (lump model) : /10 wavelengths >> wire length p= f Q3D Extractor 1. 3D Fast Quasi-static EM solver 2. 2D Fast R/L/C/G EM solver Arbitrary 3D. structure Capacitance matrix Theequation relating the total charge on a capacitor with the potential difference relative to a ground at zero volts is : Q=CV. In a three-conductor system, matrix notation is used: Q1 C11 C12 C13 V1.

Quasi-static or full-wave techniques Measure the size of the interconnect in units of wavelength! Size < λ/10, use quasi-static solvers. Output circuit model in RLGC.

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