For general frequency, use FR-4 sheet, but high-frequency materials should be used in the frequency ratio of 1-5G, such as semi-ceramic materials. ROGERS 4350, 4003, 5880, etc. are commonly used ... If the frequency is higher than 5G, it is best to use PTFE material, which is polytetrafluoroethylene. This material has good high-frequency performance, but there are limitations in the processing arts, such as the surface technology that cannot be hot air leveled. The following is about ISOLA FR408 High Frequency PCB related, I hope to help you better understand ISOLA FR408 High Frequency PCB.
The delay per unit inch on the PCB is 0.167ns. However, if there are more vias, more device pins, and more constraints set on the network cable, the delay will increase. Generally, the signal rise time of high-speed logic devices is about 0.2ns. If there are GaAs chips on the board, the maximum wiring length is 7.62mm. The following is about RO3003 PCB related, I hope to help you better understand RO3003 PCB.
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.
The harmonic frequency of the signal edge is higher than the frequency of the signal itself, which is the unintended result of the signal transmission caused by the rapidly changing rising and falling edges (or signal jumps) of the signal. Therefore, it is generally agreed that if the line propagation delay is greater than the rise time of the 1/2 digital signal drive terminal, such signals are considered to be high-speed signals and produce transmission line effects. The following is about Ro4003CLoPro PCB related, I hope to help you better understand Ro4003CLoPro PCB.
The AP9111R Rigid-Flex PCB combines the advantages of the rigid characteristics of the rigid circuit board and the bendable characteristics of the flexible board, so that the PCB is no longer a two-dimensional plane layer of oil, but is folded by a three-dimensional internal connection and arbitrary bending. The following is about 12 Layer 8R4F Rigid Flex Board related, I hope to help you better understand 12 Layer AP9111R Rigid-Flex PCB.
