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IQ Mixers Achieve High Level of Image Rejection and Sideband Suppression

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Fairview Microwave has announced a family of six unique models of IQ mixer. The RF and LO frequency bands range from 4 GHz to 38 GHz while the In-Phase and Quadrature IF bandwidths range from DC to 4.5 GHz. The MMIC IQ mixers also known as IQ modulators are manufactured with the GaAs MESFET semiconductor process. By combining a pair of matched double balanced mixer cells, a 90-degree hybrid and a 0-degree splitter/combiner, more accurate amplitude and phase balance can be achieved over the discrete module assembly approach. Adding an external 90-degree IF hybrid module, the IQ mixers can be used as either a Single Sideband Up-converter Mixer or an Image Reject Down-converter Mixer. These can be done without pre-selection filtering in the applications of point-to-point and point-to-multipoint radio, VSAT, military radar, electronic warfare, satellite communications, test equipment, and sensors.

In the image reject mixer (IRM) application, low conversion loss ranges from 7.5 to 10 dBm, high image rejection is up to 35 dB (typical) and LO to RF isolation is up to 42 dB.  The IQ mixer linearity is rated as +20 dB (with input of 1 dB compression) and +35 dB (input IP3) accordingly while the LO drive power ranges from +15 to +19 dBm. All units are compliant with MIL-STD-883.

Fairview Microwave
Allen, Texas
(972) 649-6678