The SMIQ-134H+ is a passive wideband in-phase/quadrature (I/Q) mixer fabricated using GaAs HBT technology. The SMIQ134H+ is usable as a single-sideband upconverter for transmit applications or an image rejection mixer for receiver applications. The SMIQ-134H+ is ideal for wideband frequency translation applications requiring inherent rejection of image signals and spurious mixing products. The mixer covers a broad band with RF and LO frequency ranges of 10 to 30 GHz and an IF frequency range of DC to 7 GHz. As a passive mixer, the SMIQ-134H+ offers a 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.