https://en.wikipedia.org/wiki/Intermediate_frequency

So a high frequency signal is converted to a lower IF for ... as was necessary in the early tuned radio frequency receivers.

http://www.rfwireless-world.com/Terminology/RF-vs-IF.html

https://www.analog.com/media/en/training-seminars/design-handbooks/Basic-Linear-Design/Chapter4.pdf

A mixer takes an RF input signal at a frequency fRF, mixes it with a LO signal at a frequency fLO, and produces an IF output signal that consists of the sum and ..... a bandwidth of over 500 MHz. A block diagram is shown in Figure 4.17. +VS. A.

https://www.quora.com/What-is-the-difference-between-RF-and-IF-frequency

RF = Radio Frequency (LO + IF) IF = Intermediate Frequency (LO - RF) Relation Between RF and IF : See the figure below. When the IF is ...

Thus far, we have discussed RF signals in terms of two frequency bands: the ... We'll discuss IF in the context of RF receiver design, but as you're reading keep .... IF receivers, and we'll also discuss the heterodyne vs. direct-conversion issue.

https://blog.1000bulbs.com/home/ir-vs-rf-remotes-whats-the-difference

Feb 1, 2017 ... We're comparing the pros and cons of infrared (IR) and radio frequency (RF) remotes for lighting installations and other electronic systems.

https://electronics.stackexchange.com/questions/79901/why-the-conversion-to-intermediate-frequency

What an IF gets you is a break in the signal chain which prevents oscillation. So, you might have 60 dB of RF gain then convert to your IF and ...

https://support.logitech.com/article/12467

Aug 31, 2014 ... To check to see if your device is controlled by a RF (radio frequency) or IR ( infrared) remote: Power the device on manually; Cover the front of ...

https://www.markimicrowave.com/assets/appnotes/mixer_basics_primer.pdf

As Fig. 1 depicts, IF/RF signals tend to be information ... RF (IF) signal is frequency translated to the IF (RF) output. ... Single Diode Mixer: Ideal Commutator vs.