PowerWise® Design University

Non-PLL Radio Frequency (RF) Basics

Research Assignement Answers

   
Q:

Define the 1 dB Compression Point. What is the 1 dB Compression Point a measure for in a device?

A:

It is a point at which the power gain is down 1 dB from its ideal measure. It is a measure of nonlinearity for a device.
See reference:
"Gain Compression" slide of the Non-PLL RF Basics presentation

   
Q:

If a 1 GHz signal and a 900 MHz signal are input to a mixer:
What will be the frequencies of the two strongest output frequencies?

A:
  • 1.9 GHz and 100 MHz.
    See reference: "Ideal Mixers" slide of the Non-PLL RF Basics presentation
  •    
    Q:

    If a 1 GHz signal and a 900 MHz signal are input to a mixer:
    What are the frequencies of the two intermodulation products?

    A:
  • 1.1 GHz and 800 MHz.
    See reference: "Interdemodulation Distortion" slide of the Non-PLL RF Basics presentation
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