dB , dBm Terminology

I keep seeing people using the terms “dB” and “dBm”, interchangeably, when they actually mean very different things. So, here’s a little background on the correct usage of the terms. […]

Passive Inter-modulation (PIM)

Passive Inter-modulation (PIM) is the generation of interfering signals caused by non-linearities that occurs in passive components such as antennas, cables, connectors, or duplexers with two or more high-power input signals. […]

Error Vector Magnitude (EVM)

The error vector magnitude (EVM) is a measure of modulation quality of a digital radio transmitter or receiver. A signal sent by an ideal transmitter or received by a receiver would have all constellation points precisely […]

Mobile Phone Architecture

When we say a mobile, it is not just a piece of plastic/metallic body, as it looks from outside, there are lots of different components/modules inside that mobile. This article […]

Noise Figure

Noise figure (NF) and noise factor (F) are measures of degradation of the signal-to-noise ratio (SNR), caused by components in a radio-frequency (RF) signal chain. It is a number by which the performance of an amplifier or a […]