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5 results for «dB»
By relevance- Learning
dB, dBm and power
dB is a ratio
- Learning
Antenna gain, dBi and EIRP
The conventional difference is about 2.15 dB: 0 dBd is approximately 2.15 dBi.
- Learning
Building a radio link budget
Add transmit and receive antenna gains in dBi, then subtract cable and path losses in dB.
- Learning
Coaxial cable: loss and electrical length
An example 8.5 dB per 100 m gives 1.7 dB over 20 m.
- Learning
Noise, bandwidth and sensitivity
Doubling bandwidth doubles this noise power, an increase of about 3 dB.