Oscillators – With electromagnetic or electrostatic shield
Patent
1995-07-31
1997-08-26
Grimm, Siegfried H.
Oscillators
With electromagnetic or electrostatic shield
331 68, 331 96, 331107DP, 331117D, 3332191, 361743, H03B 518
Patent
active
056614411
ABSTRACT:
A microwave oscillator includes a substrate having a circuit pattern on the top surface, a thin copper foil covering the bottom surface, and a hole. An electronic component is mounted to the top surface of the substrate. A metal plate is attached to the bottom surface of the substrate thereby closing the bottom of the hole. A dielectric resonator is attached to the metal plate through the hole. Since the dielectric resonator is attached to the metal plate by soldering, the bond between the dielectric resonator and the metal plate is stronger and more stable than that achieved by using a conventional adhesive. This enhances the reliability against temperature changes; mechanical impact or humidity.
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patent: 5249100 (1993-09-01), Satoh et al.
patent: 5498575 (1996-03-01), Onishi et al.
W. Goedbloed et al., "Microwave Integrated Circuits--Design and Realisation", Electronic Components And Applications, vol. 5, No. 2, Feb. 1983, pp. 85-99.
Kashima Yukiro
Morino Takayoshi
Grimm Siegfried H.
Matsushita Electric - Industrial Co., Ltd.
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