hi brad, you can build an IQ mixer with six connectorized passive parts, which you can purchase from minicircuits or synergy microwave, or others:
a) 90 degree phase splitter to split the LO, b) a 0 degree phase splitter to split the RF c) a pair of mixers d) a pair of 250 MHz low pass filters you can also purchase active IQ mixers from linear technology and analog devices - i think some of these chips have 500 MHz bandwidths and you can get eval boards for them. best wishes, dan On Wed, Apr 24, 2013 at 9:50 AM, Brad Dober <do...@sas.upenn.edu> wrote: > Hello All, > > Has anyone encountered an IQ mixer that operates below 1 GHz with a 500 > MHz bandwidth? Rick Raffanti's IF board has a lower limit of 1GHz, and we > want our RF band to be ~500 MHz +/- 250 MHz. > > Is there an alternative that I may be missing? Some passive combiner? > > Thanks for the help. > > -- > Brad Dober > Ph.D. Candidate > Department of Physics and Astronomy > University of Pennsylvania > Cell: 262-949-4668 >
