Transcription of Amplifier Terms Defined (AN-60-038) - Mini-Circuits
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Amplifier Terms Defined (AN-60-038) - Mini-Circuits
Amplifier Terms Defined (AN-60-038) 1 dB compression point defines the output level at which the Amplifier 's gain is 1 dB less than the small signal gain, or is compressed by 1 dB (P1dB). Output Power Saturated Output Power (PSAT) = 1dBP1dB (Output Power at 1 dB Compression) Input Power NOTE: Most amplifiers start to compress approximately 5 to 10 dB below P1dB. Applying signal power levels above this point results in a decrease in Gain therefore, the change in output power will not be linear with respect to a corresponding change in input power to the point where the Amplifier is at saturation (PSAT) and the gain equals zero.
Directivity (active directivity) is defined as the difference between isolation and forward gain in dB. It is an indication of the isolation of the source from the load, or how much the load impedance affects the input impedance and the source impedance
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