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en.wikipedia.org/wiki/Intermediate_frequency

A first intermediate frequency may even be higher than the input signal, so that all undesired responses can be easily filtered out by a fixed-tuned RF stage. In a digital receiver, the analog to digital converter operates at low sampling rates, so input RF must be mixed down to IF to be processed. Intermediate frequency tends to be lower ...

www.allaboutcircuits.com/textbook/radio-frequency-analysis-design/selected...

Many RF systems incorporate an intermediate frequency (IF) that is lower than the carrier frequency and higher than the baseband frequency. An IF-based receiver is known as a heterodyne receiver. The use of an IF simplifies the design of tunable receivers and reduces the number of components that must be compatible with high frequencies.

www.physicsforums.com/threads/intermediate-frequency-vs-baseband-signal...

In the digital communication class I took, people talk about how to do detection and processing at the baseband. But from what I read, it seems that many systems do the signal processing at some intermediate frequency without mixing it all the way back to baseband. My questions are why and how: 1 ...

coreel.com/.../radar/digital-intermediate-frequency-receiver-board

Digital Intermediate Frequency (DIF) Receiver Board is a FPGA based high speed data acquisition board. High speed ADCs are used for digitization of analog IF signals and Virtex-5 series FPGAs for front-end digital signal processing and data streaming over high speed links.

www.thefreedictionary.com/intermediate+frequency

Define intermediate frequency. intermediate frequency synonyms, intermediate frequency pronunciation, intermediate frequency translation, English dictionary definition of intermediate frequency. n electronics the frequency to which the signal carrier frequency is changed in a superheterodyne receiver and at which most of the amplification takes ...

www.hindawi.com/journals/jece/2016/6123832

Aiming at high-cost, large-size, and inflexibility problems of traditional analog intermediate frequency receiver in the aerospace telemetry, tracking, and command (TTC) system, we have proposed a new intermediate frequency (IF) digital receiver based on Multi-FPGA system in this paper. Digital beam forming (DBF) is realized by coordinated rotation digital computer (CORDIC) algorithm.

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

RF vs IF. This page describes difference between RF(Radio Frequency) and IF(Intermediate Frequency).It also explains how one frequency is converted to the other and viceversa. Both the terms are used in wireless system, IF to RF and RF to IF conversion can be done using a device called mixer. The same conversion can be achieved by way of single conversion or dual conversion.

www.ti.com/lit/wp/snaa107/snaa107.pdf

As the ADC input frequency increases, the Signal-to-Noise Ratio (SNR) for large signals will decrease due to clock jitter. Small signal SNR is not affected. For the ADC12DL080, the large signal SNR will be 65 dBFS (dB relative to Full Scale) at a 244 MHz IF. When the Intermediate Frequency (IF) Sampling Receiver Concepts ANALOG edge SM

en.wikipedia.org/wiki/Digital_down_converter

In digital signal processing, a digital down-converter (DDC) converts a digitized, band limited signal to a lower frequency signal at a lower sampling rate in order to simplify the subsequent radio stages. The process preserves all the information in the original signal less that which is lost to rounding errors in the mathematical processes.

ahzo7.blogspot.com/2011/03/intermediate-frequency-cable-if-cable.html

Intermediate frequency (IF) are generated by mixing the RF and LO frequency together to create a lower frequency called IF. Most of the ADC/DAC operates in low sampling rates, so input RF must be mixed down to IF to be processed. Intermediate frequency tends to be lower frequency range compared to the transmitted RF frequency.