High linearity, low noise I/Q converters target 17 to 27 GHz applications

May 09, 2012 // By Jean-Pierre Joosting
Four MMIC upconverter and downconverter devices from RFMD offer high performance and low cost for high frequency applications. The RFUV1702 and RFUV1703 upconverters incorporate an integrated frequency multiplier (x2), LO buffer amplifier, a balanced single sideband (image rejection) mixer followed by variable gain amplifier, and DC-decoupling capacitors.

The RFRX1701 and RFRX1702 downconverters incorporate an image rejection mixer, LO buffer amplifier, and integrated LNA. Each device is packaged in a 5 x 5mm QFN to simplify both system-level board design and volume assembly.

The combination of high performance and low cost packaging makes each of these devices a cost effective solution, ideally suited for point-to-point radio and satellite communications.

The RFUV1702 upconverter covers 17.7 GHz to 19.7 GHz with a minimum conversion gain of -5 dB and OIP3 (maximum gain) of +28 dBm. The RFUV1703 upconverter covers 21 GHz to 26.5 GHz with a minimum conversion gain of -10 dB and OIP3 (maximum gain) of +27 dBm. Both devices feature an IF frequency of DC to 4 GHz, maximum conversion gain of 21 db, Noise Figure (NF) of 9 dB and image rejection of ≥15 dBc.

The RFRX1701 downconverter covers 17.7 GHz to 26.5 GHz with an LO frequency of 6.85 GHz to 15.25 GHz, conversion gain of 13 dB, and NF of 2.5 dB. The RFRX1702 downconverter covers 17.75 GHz to 19.7 GHz with an LO frequency of 6.85 GHz to 11.85 GHz, conversion gain of 12 dB, and NF of 2 dB. Both feature an IF frequency of DC to 4 GHz, IIP3 of 6 dBm and image rejection of 15 dBc.

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