Contents
What is frequency in PCB?
A high-frequency PCB can meet your needs when incorporating a special signal requirement into your electronic components and products. It offers a frequency range of 500MHz – 2GHz, making it ideally suited for high-speed designs, as well as radio frequency (RF), microwave and mobile applications.
What is EMI and EMC in PCB?
What are EMI and EMC in a PCB? Electromagnetic compatibility (EMC) is the ability of an electronic system to operate within an electromagnetic environment satisfactorily without generating intolerable EMI (electromagnetic interference) in nearby devices/systems.
What is considered high frequency PCB?
Generally speaking, high frequency can be defined as frequency above 1GHz. Currently, PTFE material is widely used in high frequency PCB manufacturing, it’s also called Teflon, which frequency is normally above 5GHz.
What are the best practices for RF circuitry?
I understand the standard best practices: short traces, ground planes, decoupling caps, guard rings, shielding traces, etc. I’ve also put together a few RF circuits, at 2.4GHz and ~6.5GHz ultra-wide band. I have a working understanding of characteristic impedance, ground stitching, balanced vs unbalanced RF feed lines, and impedance matching.
Which is the highest frequency component of a microcontroller?
I have designed many mixed-signal PCB’s where the highest-frequency component is the microcontroller’s crystal oscillator itself. I understand the standard best practices: short traces, ground planes, decoupling caps, guard rings, shielding traces, etc. I’ve also put together a few RF circuits, at 2.4GHz and ~6.5GHz ultra-wide band.
Is the trace always radiate in a RF circuit?
There are different rules of thumb depending on what you’re concerned the trace will radiate to. An RF circuit will always radiate. Picture the signal being guided by the trace, not existing inside the trace. The signal on one trace can jump onto another trace if they are close enough. Most people call this coupling.
Can a series of PF and 50 ohms terminate?
Even at slightly longer trace lengths you could terminate with a series combination of a few tens of pF and (say) 50 ohms. This avoids the problem of a 50 ohm terminator directly across a logic line.