A low noise 3 stage cascaded power amplifier is to be used in a typical low noise communication receiver. The specifications of the three stages are given below: Amplifier -1: Gain G1 =30 dB ; Bandwidth = 1 kHz ; Total output Noise Power = - 141 dBW Amplifier -2 : Gain G2 = 20 dB ; Noise ratio (F2) = 2.547 Amplifier -3: Gain G3 = 12 dB ; Equivalent Noise Temperature (Te3)= 300 deg K. Assume that all amplifiers are kept at the same reference temperature = 27 deg C. Calculate (i) Noise ratio (F1) for Amplifier -1 (ii) Equivalent Noise Temperature Te2 (in deg K) for Amplifier -2 ( iii) Noise Ratio (F3) for Amplifier -3. (iv)Find the overall Noise Ratio after connecting the 3 stages in proper order. Toted (Note : All answers should be approximated to 3 decimal places before entering them in the boxes) Noise ratio (F1) for Amplifier -1 Equivalent Noise Temperature (Te2) for Amplifier -2 in deg K Noise Ratio (F3) for Amplifier -3. T Overall Noise Ratio after connecting the 3 stages in proper order.

A low noise 3 stage cascaded power amplifier is to be used in a typical low noise communication receiver. The specifications of the three stages are given below: Amplifier -1: Gain G1 =30 dB ; Bandwidth = 1 kHz ; Total output Noise Power = - 141 dBW Amplifier -2 : Gain G2 = 20 dB ; Noise ratio (F2) = 2.547 Amplifier -3: Gain G3 = 12 dB ; Equivalent Noise Temperature (Te3)= 300 deg K. Assume that all amplifiers are kept at the same reference temperature = 27 deg C. Calculate (i) Noise ratio (F1) for Amplifier -1 (ii) Equivalent Noise Temperature Te2 (in deg K) for Amplifier -2 ( iii) Noise Ratio (F3) for Amplifier -3. (iv)Find the overall Noise Ratio after connecting the 3 stages in proper order. Toted (Note : All answers should be approximated to 3 decimal places before entering them in the boxes) Noise ratio (F1) for Amplifier -1 Equivalent Noise Temperature (Te2) for Amplifier -2 in deg K Noise Ratio (F3) for Amplifier -3. T Overall Noise Ratio after connecting the 3 stages in proper order.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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