Kategorie: Projektowanie PCB

Co sprawia, że ​​PCB RF/mikrofalowe są wyjątkowe od innych konwencjonalnych?

When working with high-frequency signals design, the placement and routing of PCB traces are of greater importance than DV or low-frequency circuits.

When traces are laid down parallel to each other (either adjacent or on opposite sides/different layers of the board) they form a very tiny capacitor.

When traces are routed around components they can form very tiny inductors.

Teraz, as anyone who knows about AC circuits will attest, two things are unavoidable:

  1. Capacitive reactance is inversely proportional to frequency.
  2. Inductive reactance is directly proportional to frequency.

Both of the above are measured in Ohms (as they are a measure of a circuit’s resistance to current flow).

A zatem, those tiny capacitors created by the parallel traces will cause leakage. Co więcej, the interference and the inductors created by wiggling traces around components will introduce a non-linear resistance into the circuit (and could even act as an antenna, producing undesirable interference elsewhere).

These issues are sometimes used for constructive purposes to reduce noise but make HF circuit design more of a challenge.

Na przykład, you might see traces that are deliberately “wiggly”.

Czytaj więcej: 16 Kroki na projektowaniu płytki mikrofalowej

#Consumer Electronic #PCB Design

Olivera Smitha

Oliver jest doświadczonym inżynierem elektronikiem specjalizującym się w projektowaniu płytek PCB, obwody analogowe, systemy wbudowane, i prototypowanie. Jego głęboka wiedza obejmuje ujęcie schematyczne, kodowanie oprogramowania sprzętowego, symulacja, układ, testowanie, i rozwiązywanie problemów. Oliver specjalizuje się w przeprowadzaniu projektów od koncepcji do masowej produkcji, wykorzystując swoje talenty w zakresie projektowania elektrycznego i zdolności mechaniczne.

Najnowsze posty

What Is a PCB Netlist? Wszystko, co musisz wiedzieć, jest tutaj

In the world of printed circuit board design and manufacturing, precision and accuracy are paramount.

1 week ago

What Is Solder Wetting and How to Prevent Poor Wetting?

Soldering is a cornerstone technique in electronics assembly, it's used to connect electrical pieces and

4 weeks ago

7 Critical Techniques to Improve PCB Thermal Management

dzisiaj, electronic products are both compact and lightweight while performing a variety of functions. To…

1 month ago

What Is BGA on a PCB? A Complete Guide to Ball Grid Array Technology

As technology continues to advance in the electronics industry, packaging remains one of the key

2 months ago

How to Create a PCB Drawing: A Step-by-Step Guide for Beginners

Bringing your electronic ideas to life begins with PCB drawing, which is the process of

3 months ago

8 Leading PCB Design Software: A Comprehensive Comparison

Printed Circuit Board design is one of the most significant processes in electronics production. Deciding

3 months ago