What is RRH (Remote Radio Head), How it is connected to BBU (Base Band Unit) ?
The remote radio head (RRH) contains the base station’s RF circuitry plus analog-to-digital or digital-to-analog converters and up/down converters. It...
Tagged: RF
What are E-UTRA Test Models (E-TM) in LTE ?
The E-UTRA test models (E-TM) are set of signals defined by 3GPP for the radio frequecy standard testing of LTE...
What is Skin Depth, Why it matters in Radio Frequencies ?
Skin depth is a measure of how far electrical conduction takes place in a conductor, and is a function of...
What is SAW Filter ?
A Surface Acoustic Wave filter, or SAW filter is a filter whereby the electrical input signal is converted to a...
RF Sampling, making smaller base station for 3G, 4G, 5G Systems
“RF sampling” is the technology of digitizing an RF signal with an ADC directly, without an analog frequency conversion to...
dB , dBm Terminology
I keep seeing people using the terms “dB” and “dBm”, interchangeably, when they actually mean very different things. So, here’s...
Radio Frequency Bands
Radio frequency (RF) is any of the electromagnetic wave frequencies that lie in the range extending from around 3 kHz to 300 GHz. Following is the...
1dB Compression Point (P1dB Point)
1dB Compression Point When operating in the linear region of a device (such as power amplifier, mixer etc.), gain through...
VSWR
Impedance mismatches in a radio-frequency (RF) electrical transmission line cause reflection of rf power and thus power loss. VSWR is...
Mobile Phone Architecture
When we say a mobile, it is not just a piece of plastic/metallic body, as it looks from outside, there...