Development of Band 7+8 Cartridge Receiver

We will present the design and performance of a cartridge receiver which covers both ALMA band 7 and band 8 frequency ranges (275-500 GHz). The receiver has dual-linear polarization and sideband-separation capabilities providing four IF outputs of 4-8 GHz IF frequency.  Wideband components such as a splined horn, an OMT, high-jc AlN barrier SIS mixers, RF hybrids, and LO diplexers have been developed meeting requirements and assembled into a standard ALMA cartridge.