Wave transmission lines and networks – Long line elements and components
Patent
1985-03-05
1987-12-15
Gensler, Paul
Wave transmission lines and networks
Long line elements and components
333247, 357 74, 361399, 174 52R, H05K 504
Patent
active
047136340
ABSTRACT:
A semiconductor device including a metallic container for containing a radio frequency semiconductor circuit on a bottom surface thereof; a cap for covering the container; and input and output terminals connected to the circuit and penetrating through a side wall of the container at locations opposite to each other. The bottom surface of the container includes space for mounting the radio frequency semiconductor circuit and supplementary space for mounting elements of a supplementary circuit. A cutoff member for increasing the cutoff frequency of the waveguide mode wave propagation between the input and output terminals within the container is provided on a part of the supplementary space, so that the cutoff frequency is higher than the wave frequency used in the radio frequency semiconductor circuit.
REFERENCES:
patent: 2673962 (1954-03-01), Kock
patent: 3936778 (1976-02-01), De Ronde
patent: 4270106 (1981-05-01), Woermbke
patent: 4427991 (1984-01-01), Yamamura et al.
patent: 4480290 (1984-10-01), Gould
Moochalla, Shaktur S.; "Semicircular Dome Housing of a RF amplifier", RCA Technical Note No. 1344, Apr. 9 1984.
Patent Abstracts of Japan, vol. 5, No. 95(E-62) [767], Jun. 20th 1981; & JP-A-56 40263 (Nippon Denki K.K.), 16-01-1981.
IEEE Transactions on Microwave Theory and Techniques, vol. MTT-29, No. 4, Apr. 1981, pp. 314-322, New York, US; J. Van Bladel: "Dielectric Resonator in a Waveguide Below Cutoff".
Fujitsu Limited
Gensler Paul
Lee Benny
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