Fujitsu Corporation

Yasuyuki Tokumitsu

Naofumi Okubo

Toshiyuki Saito

Yoshiaki Kaneko

Hiroshi Kurihara

Yoshimasa Daido

A liquid cooling type high frequency solid state device comprising: a solid state chip; at least one matching circuit connected to the solid state chip; a carrier for mounting the solid state chip and the matching circuit, constituting a solid state circuit to be cooled; a coolant vessel for containing a liquid coolant, with a space for coolant vapor at the top thereof; and an element for condensing the coolant vapor contained in the top space of the vessel. At least a part of the solid state circuit contacts the liquid coolant for boiling and evaporating the coolant. Amplitude modulation of the solid state circuit due to the boiling of the coolant is prevented.

Liquid cooling type high frequency solid state device

A microwave power distributing and synthesizing device includes: a first base and a second base facing the first base at a predetermined distance and having a hole. A coaxial line element including an inner conductive member coaxially penetrates through the hole of the second base and is spaced from an inner wall of the hole by the second base of a predetermined distance. The coaxial line element is supported on the first base at a bottom end and forms an antenna protruding from the hole of the second base into an input waveguide at a top end. At least one electric field distributing and synthesizing member is arranged perpendicularly to the coaxial line element and a plurality of waveguides are connected to the electric field distributing and synthesizing member. Also, a microwave power amplifying apparatus includes a first microwave power distributing and synthesizing device as described above, for receiving and distributing an input microwave signal; a plurality of amplifiers connected to output ports of the first microwave power distributing and synthesizing device; and a second microwave power distributing and synthesizing device as described above, having input ports connected to the amplifiers.

Microwave power distributing and synthesizing device and microwave power

A device for distributing and combining microwave electric power which is used, for example, in a high power microwave amplifier and combines or distributes microwave electric power between a first microwave path such as a standard waveguide and a plurality of second microwave paths such as a plurality of waveguides or MIC transmission lines. The device comprises a horn whose throat portion is coupled to the first microwave path, a oversized waveguide coupled to the opening portion of the horn at one end and coupled to the plurality of the second microwave paths, and, for example, a dielectric lens, or one or more reflectors, for uniformalizing the phases of the microwave signals distributed by the horn or for adjusting the phases of the microwave signals output from the second microwave paths.

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Isehara, Japan

Yasuyuki Tokumitsu