Two new broadband GaAs MMIC mixers with ultra low conversion loss

Custom MMIC has added two new low loss, high linearity and high isolation MMIC mixers to their growing family of fundamental, IQ, and IRM mixers. The CMD181 and CMD261 are both general purpose double balanced mixers that can be used for upconversion and downconversion, or as image rejection mixers or single sideband modulators with the appropriate external hybrids and power splitters. The CMD181 fundamental mixer’s RF and LO operates from 26GHz to 45GHz with a wide IF bandwidth of DC to 12GHz. With a low conversion loss of -6.5dB, the mixer also features high LO to RF isolation of -37dB and LO to IF isolation of -29dB. This mixer is also highly linear, with an input IP3 of +22dBm. The CMD261 mixer enables frequency band translation, with an RF from 30GHz to 46GHz, an LO frequency range of 16GHz to 31GHz and an IF frequency range from 5GHz to 20GHz. With only -8dB conversion loss the mixer also features high LO to RF isolation of -30dB and LO to IF isolation of -20dB. These new GaAs mixers are available in compact die form and can operate reliably from -55C to +85C.