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  2. Signal generator - Wikipedia

    en.wikipedia.org/wiki/Signal_generator

    A vector signal generator. With the advent of digital communications systems, it is no longer possible to adequately test these systems with traditional analog signal generators. This has led to the development of the vector signal generator, which is also known as a digital signal generator.

  3. Vector signal analyzer - Wikipedia

    en.wikipedia.org/wiki/Vector_signal_analyzer

    A vector signal analyzer operates by first down-converting the signal spectra by using superheterodyne techniques.A portion of the input signal spectrum is down-converted [broken anchor] (using a voltage-controlled oscillator and a mixer) to the center frequency of a band-pass filter.

  4. Signal analyzer - Wikipedia

    en.wikipedia.org/wiki/Signal_analyzer

    A signal analyzer is an instrument that measures the magnitude and phase of the input signal at a single frequency within the IF bandwidth of the instrument. It employs digital techniques to extract useful information that is carried by an electrical signal. [1] In common usage the term is related to both spectrum analyzers and vector signal ...

  5. In-phase and quadrature components - Wikipedia

    en.wikipedia.org/wiki/In-phase_and_quadrature...

    A vector signal generator will typically use I/Q data alongside some programmed frequency to generate its signal. [8] And similarly a vector signal analyser can provide a stream of I/Q data in its output. Many modulation schemes, e.g. quadrature amplitude modulation rely heavily on I/Q.

  6. Direct digital synthesis - Wikipedia

    en.wikipedia.org/wiki/Direct_digital_synthesis

    L. Cordesses, Direct Digital Synthesis: A Tool for Periodic Wave Generation (Part 2) IEEE Signal Processing Magazine, DSP Tips & Tricks column, pp. 110–117, Vol. 21, No. 5, Sep. 2004. Jouko Vankka & Kari A.I. Halonen (2010). Direct Digital Synthesizers: Theory, Design and Applications. The Kluwer international series in Engineering and ...

  7. Spectrum analyzer - Wikipedia

    en.wikipedia.org/wiki/Spectrum_analyzer

    A spectrum analyzer is also used to determine, by direct observation, the bandwidth of a digital or analog signal. A spectrum analyzer interface is a device that connects to a wireless receiver or a personal computer to allow visual detection and analysis of electromagnetic signals over a defined band of frequencies.