categorie: Progettazione PCB

Ciò che rende i PCB RF/microonde speciali rispetto ad altri convenzionali?

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.

Adesso, 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).

così, those tiny capacitors created by the parallel traces will cause leakage. Cosa c'è di più, 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.

Per esempio, you might see traces that are deliberately “wiggly”.

Leggi di più: 16 Passaggi sulla progettazione di PCB a microonde

#Consumer Electronic #PCB Design

Oliver Smith

Oliver è un ingegnere elettronico esperto specializzato nella progettazione di PCB, circuiti analogici, sistemi integrati, e prototipazione. La sua profonda conoscenza spazia dall'acquisizione di schemi, codifica del firmware, simulazione, disposizione, analisi, e risoluzione dei problemi. Oliver eccelle nel portare i progetti dall'ideazione alla produzione di massa utilizzando il suo talento nella progettazione elettrica e la sua attitudine meccanica.

messaggi recenti

What Is a PCB Netlist? Tutto ciò che devi sapere è qui

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

Al giorno d'oggi, electronic products are both compact and lightweight while performing a variety of functions. Questo…

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