intermediate frequency

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intermediate frequency

[‚in·tər′mēd·ē·ət ′frē·kwən·sē]
The frequency produced by combining the received signal with that of the local oscillator in a superheterodyne receiver. Abbreviated i-f.

intermediate frequency (IF)

In superheterodyne receivers, a frequency resulting from the combination of the received modulated carrier frequency and the locally generated oscillator frequency. An intermediate frequency is so called because it lies between the modulated radio frequency and the audio frequency.
References in periodicals archive ?
2 GHz RF/IF quadrature modulator - announced today, the ADL5385 quadrature modulator operates from 50 MHz to 2200 MHz, making it well-suited for low intermediate frequency (IF) and RF applications such as broadband wireless access systems, microwave radio link transmitters, cable modem termination systems and cellular infrastructure.
This eliminates the intermediate frequency stages in the transmit signal chain, improving transmission quality and lowering system cost.
They expand the range of OEM modulators from TeamCast, which already includes versions for the VHF and UHF bands, and versions with Intermediate Frequency outputs.
It operates from 20 MHz to 3 GHz with intermediate frequency (IF) bandwidths of up to 30 MHz.
The SDR-3002 EWRDP covers up to 480 MHz of bandwidth over six coherent intermediate frequency (IF) input and output channels, with a multitude of field programmable gate array (FPGA) and general purpose processing (GPP) capabilities.
Most current radios require amplification, filtering and conversion of the incoming analog signal to an intermediate frequency (IF) before digitization by the radio modem.
A representative from SK Telecom was quoted in the article, explaining (as translated): "Current technology requires intermediate frequency processing to convert radio signals to digital data.

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