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  2. Frequency mixer - Wikipedia

    en.wikipedia.org/wiki/Frequency_mixer

    Selection of a mixer type is a trade off for a particular application. [2] Mixer circuits are characterized by their properties such as conversion gain (or loss), noise figure and nonlinearity. [3] Nonlinear electronic components that are used as mixers include diodes and transistors biased near cutoff.

  3. Electronic mixer - Wikipedia

    en.wikipedia.org/wiki/Electronic_mixer

    Any nonlinear electronic block driven by two signals with frequencies f 1 and f 2 would generate intermodulation (mixing) products. A multiplier (which is a nonlinear device) will generate ideally only the sum and difference frequencies, whereas an arbitrary nonlinear block will also generate signals at 2·f 1-3·f 2, etc. Therefore, normal ...

  4. List of Mullard–Philips vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_Mullard–Philips...

    AC2 – Triode for use as AF amplifier or as oscillator together with an AH1 mixer; side-contact 8 base, EC2 with a different heater; AC50, 4686 – 3 mA avg, 300 mA peak, Argon-filled triode thyratron, side-contact 8 base with grid on top cap, for relaxation oscillators up to 50 kHz

  5. IQ imbalance - Wikipedia

    en.wikipedia.org/wiki/IQ_imbalance

    IQ imbalance is a performance-limiting issue in the design of a class of radio receivers known as direct conversion receivers. [a] These translate the received radio frequency (RF, or pass-band) signal directly from the carrier frequency to baseband using a single mixing stage.

  6. Beam deflection tube - Wikipedia

    en.wikipedia.org/wiki/Beam_deflection_tube

    They can be used as two-quadrant, single-balanced mixers or (de)modulators with very linear qualities. Their mode of operation is similar to one-half of a Gilbert cell by applying an unbalanced signal f 1 to the control grid and a balanced signal f 2 to the deflection electrodes, then extracting the balanced mixing products f 1 − f 2 and f 1 ...

  7. Heterodyne - Wikipedia

    en.wikipedia.org/wiki/Heterodyne

    [2] [4] The two input frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. [ 2 ] In the most common application, two signals at frequencies f 1 and f 2 are mixed, creating two new signals, one at the sum of the two frequencies f 1 + f 2 , and the other at the ...

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  9. Ring modulation - Wikipedia

    en.wikipedia.org/wiki/Ring_modulation

    Double balanced high level frequency mixer Mini-Circuits SBL-1 with four Schottky diodes. LO level +7 dBm (1.41 V p-p) and RF 1–500 MHz (ADE-1: 0.5–500 MHz) Macro of the ADE-1 An example of ring modulation on a sine wave of frequency and a square wave of frequency , resulting in a complex sound using analog FM known as diode-clipping or ...

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