Howtosignalprocessing
What is IQ in RF?
Quadrature signals, also called IQ signals, IQ data or IQ samples, are often used in RF applications. They form the basis of complex RF signal modulation and demodulation, both in hardware and in software, as well as in complex signal analysis.
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.
What is IQ vector?
It is representation of the signal in the complex form i.e. real and imaginary. I refers to real part and Q refers to imaginary part. The binary data after data mapping(modulation bpsk,qpsk,qam) becomes complex and refers as IQ vector signal.
