The SMIQ-263H+ is a passive, wideband, in-phase/quadrature (I/Q) mixer fabricated using GaAs HBT technology. The SMIQ-263H+ is usable as a single-sideband upconverter for transmitter applications or an image rejection mixer for receiver applications. The SMIQ-263H+ is ideal for wideband frequency translation applications that require inherent rejection of image signals and spurious mixing products. The mixer covers a broad RF and LO frequency range of 2000 to 6000 MHz and an IF frequency range of DC to 3000 MHz. As a passive mixer, the SMIQ-263H+ 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 QFNstyle package, and no DC bias is needed for operation.