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resistors connected in parallel. 40(4.78microV) 3. A3 stage amplifier is to have an overall noise temperature no greater than 70°K. The overall gain of the amplifier is to be at least 45 db. The amplifier is to be built by adding a low noise first stage to an existing amplifier with existing characteristic as follows; Stage 2 has 20 dB power gain; 3 dB noise figure. Stage 3 has 15 dB power gain and 6dB noise figure. Calculate the maximum noise figure (in dB) that the first stage can have. 30(0.56db)

resistors connected in parallel. 40(4.78microV) 3. A3 stage amplifier is to have an overall noise temperature no greater than 70°K. The overall gain of the amplifier is to be at least 45 db. The amplifier is to be built by adding a low noise first stage to an existing amplifier with existing characteristic as follows; Stage 2 has 20 dB power gain; 3 dB noise figure. Stage 3 has 15 dB power gain and 6dB noise figure. Calculate the maximum noise figure (in dB) that the first stage can have. 30(0.56db)

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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resistors connected in parallel. 40(4.78microV) 3. A3 stage amplifier is to have an overall noise temperature no greater than 70°K. The overall gain of the amplifier is to be at least 45 db. The amplifier is to be built by adding a low noise first stage to an existing amplifier with existing characteristic as follows; Stage 2 has 20 dB power gain; 3 dB noise figure. Stage 3 has 15 dB power gain and 6dB noise figure. Calculate the maximum noise figure (in dB) that the first stage can have. 30(0.56db)
Transcribed Image Text:resistors connected in parallel. 40(4.78microV) 3. A3 stage amplifier is to have an overall noise temperature no greater than 70°K. The overall gain of the amplifier is to be at least 45 db. The amplifier is to be built by adding a low noise first stage to an existing amplifier with existing characteristic as follows; Stage 2 has 20 dB power gain; 3 dB noise figure. Stage 3 has 15 dB power gain and 6dB noise figure. Calculate the maximum noise figure (in dB) that the first stage can have. 30(0.56db)
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