Electrical Engineering Stack Exchange
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Questions tagged [mixer]

A mixer or frequency mixer is a nonlinear electrical circuit that creates new frequencies from two signals applied to it.

219 questions
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Multiple Options for Passive Audio Mixer

I have two mono audio inputs that I need to passively combine into a single output. Both inputs have built-in volume controls so I don't need any volume control in the mixer. I've been looking at ways to do this, and have seen a couple common…
Jordan
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Passively mixing two (or perhaps more) speaker-level audio signals, without additional downstream amplification

I have several voice-radios with amplified mono outputs. The radios are designed to connect directly to a 4Ω speaker. I would like to connect two (or more) of them to the same speaker. The radio transmits human voice (think walkie-talkies), so the…
Kenn Sebesta
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How is "conversion loss" defined for an IQ mixer?

Suppose I use an IQ mixer to downconvert an RF (i.e. 8 GHz) signal to IF (i.e. 50 MHz). For example, the RF signal might be \$V_\text{RF}(t) = A \cos((\Omega + \omega) t + \phi)\$ and the LO signal could be at frequency \$\Omega \$, resulting in IF…
DanielSank
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Frequency mixing at low frequencies (with AD835)

I am using the AD835 to downconvert signals from around 1 kHz to around 10 Hz. While testing I found that the mixer behaves differently when using for example an LO at 1 MHz and RF at 999,99 kHz opposed to an LO at 1 kHz and RF at 1.01 kHz - both…
Irenaius
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Resistor choice for passively mixing line level and speaker level

There are a lot of great resources here for people who want to mix together multiple outputs of the same or similar load impedance. However, in my case, I want to mix a mono, amplified, ground-referenced output designed to drive 2.5W into 4 Ohms…
Kenn Sebesta
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RF mixer output

I have three questions with respect to an RF mixer. Let us consider this component - ADE-35MH+ from mini-circuits. The component has three pins - LO, RF, and IF. What is the output on IF? Is it LO + RF or LO - RF? Are the pins bidirectional mixer?…
enemra
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What is the difference between IQ mixers and normal mixers?

What is the difference between IQ mixers and multiplication mixers? How do we know which ones to use?
Desk Reference
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reduce power consumption on this audio mixer

I'm wondering if you can reduce the mA consumed by this discrete audio mixer (on both +12V and -6V) by changing the resistors values, but keeping the same functionality (same gain, same asymmetrical clipping levels). Also, as second question, is it…
Dimitri Petrucci
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100kHz Downconverter conversion

I've got a 900MHz downconverter design which I'm trying to convert for a 100kHz single ended RF input and LO input. I'm not sure how to calculate the required capacitor and inductor values, so any help would be greatly appreciated!
Shane
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What is LO rejection in a mixer?

Could anyone please tell me how LO rejection is defined in a mixer? I've heard Image Rejection but not LO rejection. Please help! Thanks.
Missfresstyle
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