A series of wideband, passive, in-phase quadrature RF mixers has been introduced by Analog Devices (ADI). Supporting the entire 2.5-42GHz spectrum, the HMC819x mixers provide significant benefits compared to alternative discrete options available today and are suitable solutions for industrial applications such as test and measurement and defense electronics that require wideband support.
Over ten discrete components would be required to cover this same frequency range, as compared to what can be achieved with ADI’s three new devices without any compromise in performance. ADI claims its HMC819x mixers are the industry’s only wideband solutions available in a standard SMT package, allowing them to be integrated efficiently in order to decrease overall design time and risk, while speeding time to market.
The HMC819x series’ RF and LO bandwidth of 2.5-42GHz along with wide IF bandwidth enable military or test and measurement applications to simplify design implementation while still maintaining superb RF performance. The series achieves isolation on the order of 35dB or greater for both LO to RF and LO to IF isolation and greater than 20dB of RF to IF isolation.
The inherent I/Q architecture of the mixers accomplishes image/sideband rejection of 25dBc or greater without the use of expensive external filtering thus overall reducing bill of materials cost. Input IP3 greater than 20dBm is realised over the wide bandwidth while maintaining low conversion loss and high dynamic range. Well-matched LO driver amplifiers have been listed to drive the LO port of each mixer with low input power.