Analogue, Mixed Signal, LSI


SMT I/Q up-converter and PA

12 March 2014 Analogue, Mixed Signal, LSI

Hittite has announced a new GaAs MMIC I/Q up-converter and power amplifier (PA) that are ideal for high capacity point-to-point/point-to-multipoint radios, SATCOM and radar systems covering the 5,5 to 8,6 GHz frequency range.

The HMC6505LC5 is a compact I/Q up-converter that provides a small signal conversion gain of 15 dB with 22 dBc of sideband rejection. Available in a leadless RoHS compliant SMT package, it utilises an RF amplifier preceded by an I/Q mixer where the LO is driven by a driver amplifier.

IF1 and IF2 mixer inputs are provided and an external 90° hybrid is needed to select the required sideband. This I/Q mixer topology is highly beneficial for microwave radio applications, since unwanted sideband filtering is reduced. The HMC6505LC5 is a much smaller alternative to hybrid style single sideband up-converter assemblies, and exhibits excellent LO to RF rejection of 14 dBc with output IP3 as high as +35 dBm.

The HMC7357LP5GE is a GaAs pHEMT MMIC medium-power amplifier that operates between 5,5 and 8,5 GHz. It provides 29 dB of gain and +35 dBm of saturated output power at 34% PAE from a +8 V supply.

With an excellent output IP3 of +41,5 dBm, the HMC7357LP5GE is ideal for linear applications demanding +35 dBm of efficient saturated output power. It features RF I/Os that are internally matched to 50 Ω, and is available in a compact leadless 5 x 5 mm plastic surface-mount package.

For more information contact Andrew Hutton, RF Design, +27 (0)21 555 8400, [email protected], www.rfdesign.co.za



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