THE EFFECT Transmission characteristics, simulation conditions • Analytical software: Ansys HFSS 19.0 • Frequency: 0-40 GHz • Cable: Micro-coaxial cable, AWG #36, 42.5 ohm • Cable length: 254 mm (10 inches) • Connector with both ends • Pin assignment: GSSGSSGSSG (G: Ground, S: Signal) • Improved characteristic impedance • Existing product was 73 ohm-94 ohm • However, the paddle card product has improved to 84-93 ohm. Table 3 shows a comparison of the characteristic impedance of conventional and improved product using a paddle card.
• Improved NEXT and FEXT Paddle card products can shift the resonance frequency. As shown in the table below, the resonance frequency has been shifted from 17 GHz to 33 GHz. Thus, transmission up to the 25 GHz band is now possible. Tables 4 and 5 show results for NEXT and FEXT. These are comparisons between existing product and improved product with a paddle card. The red circles indicate resonance points.
Table 4: Near End Crosstalk
Table 3: Characteristic impedance
Table 5: Far-end Crosstalk
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