Rf-35TC PCB is Taconic high thermal conductivity low loss laminate, high Tc, DK 3.5 substrate, DF 0.0011, is a good choice for high frequency, radio frequency, Microwave PCB
Ro4835LoPro PCB--For the processing of high cost performance SIW circuits, another advantage of using ro4835blopro and ro4835lopro materials is that the processing cost can be reduced through the standard FR-4 epoxy / glass process.
Taconic PCB is a company name in the United States. Taconic is the largest manufacturer of PTFE copper clad laminate in the world. It has the patent of evenly coating PTFE on glass woven cloth, and is one of the technology leaders in PTFE microwave copper clad laminate industry.
Signal transmission occurs at the moment when the signal state changes, such as rise or fall time. The signal passes a fixed time from the driving end to the receiving end. If the transmission time is less than 1/2 of the rise or fall time, the reflected signal from the receiving end will reach the driving end before the signal changes state. Conversely, the reflected signal will reach the drive end after the signal changes state. If the reflected signal is strong, the superimposed waveform may change the logic state. The following is about 12 Layer Taconic High Frequency Board related, I hope to help you better understand 12-Layer Taconic High Frequency PCB.