The SMIQ-5143H+ is a passive, wideband in-phase/quadrature (I/Q) mixer fabricated using GaAs HBT technology. This model is usable as a single-sideband upconverter for transmit applications or an image rejection mixer for receiver applications. The SMIQ-5143H+ is ideal for wideband frequency translation applications that require inherent rejection of image signals and spurious mixing products. The mixer covers a broad band with RF and LO frequency ranges of 5 to 14 GHz and an IF frequency range of DC to 7 GHz. As a passive mixer, the SMIQ-5143H+ offers lower noise figure than active mixers, enabling superior dynamic range for high-performance applications. The mixer is housed in a compact 4×4 mm 24-Lead QFN-style package, and no DC bias is needed for operation.