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I am looking to create a PCB to provide bias for my 30 GHz PA . My PA chip has instability issues around 3-4 GHz due to the bias path. So I am building a PCB board to mount the chip. The PCB provides the gate and drain bias with additional bypass circuitry to stabilize the PA(by providing...
Here is a full schematic where i showing the discrepancy. I verified that the global ground is wired properly to the DC sources
The transmission lines have a apparent voltage drop. even though the right transmission line is grounded, the differential port is showing -500 mV
I am planning to use differential ports(SMD or auto) for series elements, but neither of the two pins in the differential port are at 0V. So is it better to skip the differential port to avoid the floating voltages? Interestingly the voltages outside the momentum block in the schematic do not...
I have noticed this recently, whenever I EM a structure with differential ports somewhere in the layout and do DC/ HB simulations. The DC voltages shown at the differential port seem incorrect. Am I looking at it incorrectly? I have attached two pictures. In the first image, i have a resistor of...
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