SMT, PCB Electronics Industry News

Basics of Control Impedance

Oct 18, 2018

With signal switching frequencies getting higher these days, impedance within tracks of Printed Circuit Boards has become an issue for modern day PCB designers. We can view PCB tracks as transmission lines since modern digital circuits operate at high clock frequencies and small signal switching periods. 

Controlled Impedance: 
The connector which feeds an incoming signal to a television set or wireless equipment is a frequently seen specimen of controlled impedance. The cable coming from an Aerial antenna can be a coaxial cable with low loss or more commonly a “flat twin” type of cable that comes with VHF receivers. The material from which cable is made and its length as well as width determine the feeder impedance. 

It is easy to imagine PCB tracks as very precise, short wires connecting different components on a PCB. Just like the inner cable of a coaxial cable, PCB tracks carry the signal and are insulated from the ground which is the return path by PCB material. PCB material insulates the tracks from ground which can be compared with the way inner signal carrying cable of a coaxial cable is insulated from its return path. 

Purpose of Controlling Impedance: 
According to rules governing RF transmission, input impedance of the aerial has to be matched with impedance at receiving side and signal feeder thus transferring all available power to ensure strength and integrity of the RF signal. To make it more clear, an RF signal in ideal conditions needs a path having similar impedance from feeder to receiver. 

Reflection of a signal towards its source diminishes signal strength, this happens when signal source and received are not matched and only a fraction of signal goes through. For high frequency transmissions, it becomes important for designers to ensure similar inductance, capacitance and other characteristics of a cable because it’s a signal path and not a simple conductor anymore. When these characteristics are strictly kept in check and cables are designed accordingly, they are called transmission lines.

http://www.flason-smt.com/new/Basics-of-Control-Impedance.html

When SMT matter to your business, partner with Flason. Where innovation takes form.
reflow oven lead free reflow oven LED strip reflow oven dual rail reflow oven custom reflow oven China reflow ovenSMT Peripheral Equipment SMT reflow oven 
wave soldering machine pick and place machine lead free wave soldering machine custom wave soldering machinecustom pick and place machine SMT Assembly line
SMT Reflow Oven Manufacturer Wave Soldering Mahchine Manufacturer Pick and Place Machine Manufacturer Reflow Oven Manufacturer SMT Spare Parts LED Pick and Place Machine
Andrey: sales@flason-smt.com Wechat whatsapp:+86 13691605420

Keywords: Reflow Oven SMT Reflow Oven Wave Soldering Machine SMT Stencil Printer Pick and Place Machine SMT Inspection machine SMT Assembly Line SMT Peripheral Equipment SMT Spare Parts reflow oven lead free reflow oven LED strip reflow oven dual rail reflow oven Custom reflow oven China reflow oven SMT Peripheral Equipment SMT reflow oven wave soldering machine pick and place machine lead free wave soldering machine custom wave soldering machine custom pick and place machine SMT Assembly line SMT Reflow Oven Manufacturer Wave Soldering Mahchine Manufacturer Pick and Place Machine Manufacturer Reflow Oven Manufacturer SMT Spare Parts LED Pick and Place Machine

For More information,visit US: Reflow Oven Manufacturer or SMT Reflow Oven Wave Soldering Machine SMT Stencil Printer Pick and Place Machine SMT Inspection machine SMT Assembly Line SMT Peripheral Equipment SMT Spare Parts SMT Feeder SMT Nozzle Feeder storage cart USB Flash Drive Manufacturer wave soldering machine manufacturer Email us: sales@flason-smt.com

Dec 08, 2018 -

Lead-Free (Pb-Free) Solder and Composition

Dec 08, 2018 -

All about Semiconductor

Dec 08, 2018 -

Top 10 Consumer Electronics Companies in the World

Dec 08, 2018 -

How Electronic / Electrical Circuit Works

Dec 08, 2018 -

Ball Grid Array (BGA) Package

Dec 08, 2018 -

SMT Dictionary – Surface Mount Technology Acronym and Abbreviation

Dec 08, 2018 -

Printed Circuit Board (PCB) for Surface Mount Technology (SMT)

Dec 08, 2018 -

Basic Soldering Guide – How to Solder Electronic Components

Dec 08, 2018 -

RoHS Guide in Electronics: RoHS, WEEE and Lead-Free FAQ

Dec 08, 2018 -

Electronic Components, Parts and Their Function

133 more news from Flason Electronic Co.,limited »

Mar 18, 2024 -

Kurtz Ersa Inc. Receives 2024 CIRCUITS ASSEMBLY NPI Award for the VERSAFLOW ONE X-Series

Mar 18, 2024 -

MicroCare, LLC Named a Best Place to Work in Connecticut for 2024

Mar 18, 2024 -

Solderstar to Showcase Advanced Solutions at EPP Innovations FORUM 2024

Mar 18, 2024 -

Solderstar to Showcase Advanced Solutions at EPP Innovations FORUM 2024

Mar 18, 2024 -

Solderstar to Showcase Advanced Solutions at EPP Innovations FORUM 2024

Mar 18, 2024 -

SHENMAO Low-Temperature Solder Paste PF735-PQ10-10 Is Designed for High-Speed Printing Processes

Mar 18, 2024 -

Ultrasonic Selective Fluxing System Excels in Efficiency

Mar 18, 2024 -

Silicon Mountain Accelerates Electronics Manufacturing with Universal Instruments Fuzion System Acquisition

Mar 18, 2024 -

BTU's Aurora Scores Another Award – 2024 NPI Award Recipient

Mar 18, 2024 -

Weller Tools Wins 2024 NPI Award for ZeroSmog Shield Pro Fume Extraction System

See electronics manufacturing industry news »

Basics of Control Impedance news release has been viewed 867 times

ICT Total SMT line Provider

See Your 2024 IPC Certification Training Schedule for Eptac