1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Microwave Engineering -- Noise figure of a cascade

  1. Mar 12, 2015 #1
    I am taking a course in Microwave Engineering and we were given the following problem to solve
    An amplifier with a gain of 12 dB, a bandwidth of 150 MHz, and a noise figure of 4 dB feeds a
    receiver with a noise temperature of 900 K. Find the noise figure of the overall system.
    Need I to use the following relation?:
    Fcas=F1 + (F2-1)/G = F1 + (T/T0)/G? Where T=900 K and T0=290 K.
    I'd appreciate some guidance.
  2. jcsd
  3. Mar 13, 2015 #2

    rude man

    User Avatar
    Homework Helper
    Gold Member

    You don't need any guidance since you got it right the 1st time! :smile: (assuming your G = 101.2).
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Threads - Microwave Engineering Noise Date
Linearizing a system of equations? Tuesday at 11:04 PM
Microwave rectangular cavity resonator ? Mar 11, 2015
Microwave Circuit: Quadrature Coupler Mar 25, 2014
Diodes in Tv / Microwave / Mobile ? Aug 2, 2010
Microwaved Superheated Water Nov 15, 2007