When shopping for loudspeakers or headphones, most consumers don’t even look at the impedance of the products they are considering. Do they need to? What is Impedance? Glad you asked. Most consumers ...

What is the significance of impedance for PCB manufacturer? Why? This article first introduces what is the type of impedance, and secondly describes why the PCB circuit board is to be impedance.

All engineers know resistance is usually bad news. It generates heat. It reduces efficiency. It wears out components and cuts operational lifetimes. However, resistance is not the only kind of ...

The Smith chart is a staple for analyzing complex impedance. [W2AEW] notes that a lot of inexpensive test gear like the MFJ-259B gives you complex readings, but fails to provide the sign of the ...

The theory developed in II is extended to cover the case of a superconductor, and a formula is derived relating the r.f. resistivity to the superconducting penetration depth and other parameters of ...

We are specifically and deliberately going to do without the Smith chart today and look at some transmission line properties from a very basic perspective. Consider a transmission line, a coaxial ...

Providing all the well-known measurement parameters: Impedance |Z|, Admittance |Y|, Phase Angle(?), Reactance(X), Conductance(G), Susceptance(B), Inductance(L ...

There was a time when the measure of a transmitting radio antenna was having it light an incandescent bulb. A step up was a classic SWR/Power meter that showed you forward and reflected power. Over ...

We have a number of recognized transmission and distribution experts serving on our board of "Grid Masters." Several times each month we’ll post what we judge to be the toughest questions that also ...