Carrier

Dbc to db converter

Dbc to db converter
  1. What is the difference between dB and dBc?
  2. What unit is dBc?
  3. How do you convert to dB?

What is the difference between dB and dBc?

dBc = dB relative to the carrier. This is used e.g. to specify the power of a sideband in a modulated signal relative to the carrier. For example, −30 dBc means that the sideband is 30 dB below the carrier, i.e., it has a 1000 times lower power.

What unit is dBc?

dBc (decibels relative to the carrier) is the power ratio of a signal to a carrier signal, expressed in decibels. For example, phase noise is expressed in dBc/Hz at a given frequency offset from the carrier.

How do you convert to dB?

The dB is calculated via two different expressions XdB=10log10(XlinXref)orYdB=20log10(YlinYref). If you convert a quantity X that relates to power or energy, the factor is 10. If you convert a quantity Y that relates to amplitude, the factor is 20.

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