  We report on the development and characterization of a compact,
full-waveguide bandwidth (WR-10) signal source for general-purpose testing of
mm-wave components. The MMIC-based multichip module is designed for compactness
and ease-of-use, especially in size-constrained test sets such as a wafer probe
station. It takes as input a cm-wave CW reference and provides a factor of
three frequency multiplication as well as amplification, output power
adjustment, and in-situ output power monitoring. It utilizes a number of custom
MMIC chips such as a Schottky-diode limiter and a broadband mm-wave detector,
both designed explicitly for this module, as well as custom millimeter-wave
multipliers and amplifiers reported in previous papers.
