Richardson RFPD Inc. introduced two GaAs MMIC fundamental mixers from Analog Devices. The HMC557A is a general-purpose, double balanced mixer in a 24-lead, ceramic 4 mm x 4 mm LCC package that can be used as an up-converter/down-converter from 2.5 to 7 GHz. The HMC773A general-purpose, double balanced mixer, available in a 24-lead, ceramic 3 mm x 3 mm LCC package, can be used as an up-converter/down-converter from 6 to 26 GHz.