Abstract
This paper has a deal with the frequency range extension of millimeter wave synthesizers (26-118 GHz) through frequency multiplication to provide a reliable, relatively inexpensive, and simple in operation tunable synthesized sources up to submillimeter-wave length band. Frequency doublers and triplers using planar GaAs Schottky barrier diodes as the non-linear element have been developed. Description of their waveguide mounts having no any external tunings and biasing is given. Harmonic generation conversion loss at various frequencies for several practical multiplier assemblies are presented. Examples of practical application of such source (synthesizer + multiplier) in microwave spectroscopy are demonstrated.
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