image reject mixer

image reject mixer

[′im·ij ′rē‚jekt ‚mik·sər]
(electronics)
Combination of two balanced mixers and associated hybrid circuits designed to separate the image channel from the signal channels normally present in a conventional mixer; the arrangement gives image rejection up to 30 decibels without the use of filters.
References in periodicals archive ?
Two CMD179s can be configured as an image reject mixer or single sideband modulator with external hybrids and power splitters.
In particular, the company's microwave and millimeter-wave mixer ICs have been used to implement image reject mixer (IRM) and single sideband (SSB) upconverter circuits.
AMMC-6550: Image reject mixer, 15-50 GHz, supports a wide range of radio bands with 20 dBm image rejection ratio.
A gallium arsenide (GaAs) monolithic microwave integrated circuit (MMIC) image reject mixer (IRM) is available covering discrete frequency bands of 12 to 34 GHz.
The AMMP-6530, a 5 GHz to 30 GHz image reject mixer (5 GHz to 30 GHz LO and RF, DC to 5 GHz IF) featuring -7 dB conversion loss and 15 dB image suppression.
The image reject mixer eliminates the need for an image bandpass filter after the ouptut amplifier to remove signal power at the image frequency.
The device integrates an Image Reject Mixer (IRM), Low Noise Amplifier (LNAs) and Reference-VCXO to reduce external component count and system costs.
The image reject mixer removes the need for a bandpass filter after the LNA to remove thermal noise at the image frequency.
The product's key innovations comprise integration of a tri-band Image Reject Mixer (IRM) with Low Noise Amplifiers (LNAs) for the receiver front end architecture combined with an integrated Reference-VCXO (Voltage Controlled Crystal Oscillator) reducing external component count and cost.
The image reject mixer eliminates the need for an image bandpass filter after the output amplifier to remove thermal noise at the image frequency.
An L-band transmitter IF is upconverted to 60 GHz in an image reject mixer and then amplified to the final output level.
The image reject mixer suffers from other shortcomings as well.