Gain

Iq imbalance effect

Iq imbalance effect
  1. What is gain imbalance?
  2. What is IQ modulation?

What is gain imbalance?

IQ gain imbalance is the ratio of the gain of the in-phase (I) portion of the signal to the gain of the quadrature phase (Q) portion of the signal at a point in the time signal. Because Gain Imbalance is expressed as a logarithmic value, it may have a positive or negative value.

What is IQ modulation?

What's an IQ Modulator? An IQ modulator is a device that converts baseband information into RF signals. Internally, two double-balanced mixers are combined as shown below. By modulating with both in-phase (I) and quadrature (Q) inputs, any arbitrary output amplitude and phase can be selected.

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