How does frequency relate to PCB size?
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How does frequency relate to PCB size?
The shorter the lead between the pins of high-frequency circuits is, the better it is. The radiation intensity of the signal is directly proportional to the routing length of the signal line. The longer the high-frequency signal lead is, the more easily it can be coupled to its components.
What is high-frequency material?
The high-frequency material perhaps most familiar to users of PCB laminates is polytetrafluoroethylene (PTFE) which is a synthetic thermoplastic fluoropolymer that has excellent dielectric properties at microwave frequencies.
What is high speed circuit?
High-speed circuit switched data (HSCSD) [1, 4, 5] is a feature that enables the co-allocation of multiple full rate traffic channels (TCH/F) of GSM into an HSCSD configuration. The aim of HSCSD is to provide a mixture of services with different air interface user rates by a single physical layer structure.
Why impedance matching is required in high speeds signal?
Power needs to be propagated throughout the length of the trace. But maximum signal power can only be achieved with matching impedances on the PCB. So, that is why there is a need for impedance matching. We want as much of the power from the driver to end up at the receiver.
Which material is best for high frequency?
When making a choice in high-frequency circuit materials based on fabrication issues, the clear-cut favorite would be ceramic-filled hydrocarbon material with woven glass. These materials feature a low dissipation factor typically on the order of 0.003 and are robust in terms of most circuit fabrication processes.
What is high temperature circuit?
A high temperature circuit board is typically defined as one with the Tg (glass transition temperature) greater than 170°C. High temperature PCBs should follow a simple rule of thumb for continuous thermal load with an operating temperature ~25°C below the Tg.
What are high speed interfaces?
High-Speed Serial Interface (HSSI) is a short-distance (50′) communications interface that is used to interconnect routing and switching devices on slower local-area networks (LANs) with the higher-speed lines of a wide area network (WAN).