Return to Memolist

MMA Memo #207

Wide Bandwidth, YIG-Based Sources and Modern Frequency Multipliers for the MMA Local Oscillator Sytem

R.F. Bradley

April 30, 1998


The conventional approach to generating local oscillator (LO) power for millimeter- and submillimeter-wave heterodyne mixers is to generate power at a lower frequency using a suitable phase-locked source, and to convert this power to the desired commensurate frequency using a nonlinear diode such as a varactor in a frequency multiplier circuit. Although useful for single-dish telescope receiver systems, the conventional approach, using current state-of- the-art components, is highly impractical for large array-type radio telescopes for which manageable cost and high reliability are important factors.

From here, you can:

View an HTML version of MMA Memo #207.

Download a 0.1MB gzipped postscript version of MMA Memo #207 from


Last modified: 09 December, 1999