| 摘要 |
A fine tuning system for adjusting the frequency of voltage controlled oscillators with fine resolution by mechanical tuning. A resonator is located on the dielectric substrate resonant frequency. The tuning system has metal strip located on a dielectric substrate. The metal strip has a pair of edges and a primary cut extending into the metal strip. The primary cut has a pair of ends. Several cavities in the metal strip are located adjacent an end of the primary cut. An elongated slot is cut into the metal strip. The slot is located between the cavities and an edge. The slot reduces the coupling of the tuning elements such as shorts, formed by cavities, to the resonator, and therefore allows fine tuning of the resonant frequency. Location of the slot closer to the cavities results in more fine tuning. Location of the slot further away from the cavities results in coarse tuning. An alternative embodiment is shown.
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