intermediate frequency


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intermediate frequency

[‚in·tər′mēd·ē·ət ′frē·kwən·sē]
(electronics)
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 ?
However, the torque magnitude has little impact on the intermediate frequency and high frequency intervals.
Now that we've chosen an acceptable Intermediate Frequency we are in a position to select a mixer.
The R2S15500SP converts Sound Intermediate Frequency (SIF) into digital data processing demodulation.
This digitizer, combined with NI's LabVIEW software running on a host computer, can be used to replace the measurement capabilities of audio and spectrum analyzers, IF (intermediate frequency) analyzers, DC and RMS (root mean square) analyzers, and frequency counters.
In addition, the chip cuts the external component count, and therefore cost, by eschewing IF (Intermediate Frequency) filters, ceramic capacitors, and varicaps.
The system provides two receive and one transmit channel at industry standard 213.33 megasamples per second (MSPS) supporting a 160-MHz intermediate frequency (IF) with bandwidths in excess of 80 MHz.
The low-IF (Intermediate Frequency) radio receiver architecture employed in this design, adapted from high-efficiency pager technology, offers lower power consumption and better immunity to interference than direct conversion receivers.
This paper describes the design of a 5th order elliptic filter for the Intermediate Frequency (IF) stage of a GSM transceiver.
Either the intermediate frequency (IF) or the RF signal is mixed with the LO signal, resulting in the frequency up- or down-conversion operation.
Like all members of the MSM6xxx family, the MSM6280 solution incorporates QUALCOMM's radioOne Zero Intermediate Frequency (ZIF) architecture, which eliminates the need for Intermediate Frequency (IF) components.
Also, the absence of intermediate frequency noise enables much simpler RF planning inside the complex environment of a cell phone.
There are 10 digital signal processor (DSP) chips inside a Symphony radio, of which nine are special purpose co-processors supporting a 24-bit core unit that contains the radio frequency (RF) front-end and intermediate frequency (IF) analog interface.

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