Wave transmission lines and networks – Coupling networks – Nonreciprocal gyromagnetic type
Reexamination Certificate
2008-01-30
2011-12-27
Takaoka, Dean O (Department: 2817)
Wave transmission lines and networks
Coupling networks
Nonreciprocal gyromagnetic type
C333S033000
Reexamination Certificate
active
08085110
ABSTRACT:
Since the loss of the conventional microwave device is large, when this device is applied to the microwave component, there are problems; for example, a low-noise amplifier, the noise figure is degraded, and when applied to a high-output amplifier, output and efficiency may be decreased. In particular, in the high-output amplifier of over 100 W class, heat generation at a capacitor which forms the microwave device increases, which causes a problem that the reliability of the microwave device may be decreased. A structure is formed to include a capacitor loaded between two high impedance lines the length of which has ¼ wavelength in the desired frequency band and the characteristic impedance is higher than 50Ω.
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Hunada Masahiko
Seino Kiyoharu
Mitsubishi Electric Corporation
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Takaoka Dean O
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