Xilinx Virtex-5 RocketIO GTP User Manual page 248

Chapter 13: Design of Transitions
For wide traces, curved routing can also be helpful as shown in
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Figure 13-18: Simulated Return Loss of 45 Degree Bends with Jog-Outs
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Figure 13-19: Simulated Phase Response of 45 Degree Bends with Jog-Outs
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Frequency, Hz
Frequency, GHz
Figure
Virtex-5 RocketIO GTP Transceiver User Guide
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UG196 (v1.3) May 25, 2007