Abstract: A radio frequency circuit includes an antenna terminal, a first switch, a power amplifier, a low noise amplifier, a regulator circuit, and a second switch. The first switch has a common terminal connected to the antenna terminal, a first selection terminal connectable to the common terminal, and a second selection terminal connectable to the common terminal. The regulator circuit is connected between a first signal path and a second signal path, the first signal path being between the antenna terminal and the common terminal, the second signal path being between the power amplifier and the first selection terminal. The second switch is connected between the second signal path and the ground. The regulator circuit includes at least one of an inductor or a capacitor.

Abstract: A communication system includes a communication apparatus comprising a plurality of first connectors; a controlling apparatus that comprises a plurality of second connectors; a first gathering unit that gathers first identifiers for the respective communication cables coupled to the plurality of first connectors of the communication apparatus; a second gathering unit that gathers second identifiers for the respective communication cables coupled to the plurality of second connectors of the controlling apparatus; and a connection normality determining unit that determines whether or not the communication cables that connect between the controlling apparatus and the communication apparatus are connected properly, by comparing the first identifiers with the second identifiers.

Abstract: By provided with a first extraction unit configured to extract a communication setting value corresponding to a communication cable provided to a first connector, from communication setting information, based on cable information gathered by a first gathering unit, a first setting unit configured to set the communication setting value, to a first storage device of a first communication switch, a first activation unit configured to activate a port of the first communication switch, and a first synchronization unit configured to cause a management apparatus to carry out an activation of a port of a second communication switch provided in a communication apparatus in synchronization with the activation of the port, the flexibility of configurations employing communication cables is improved.

Abstract: By provided with a first extraction unit configured to extract a communication setting value corresponding to a communication cable provided to a first connector, from communication setting information, based on cable information gathered by a first gathering unit, a first setting unit configured to set the communication setting value, to a first storage device of a first communication switch, a first activation unit configured to activate a port of the first communication switch, and a first synchronization unit configured to cause a management apparatus to carry out an activation of a port of a second communication switch provided in a communication apparatus in synchronization with the activation of the port, the flexibility of configurations employing communication cables is improved.

Abstract: A fluid bearing with an oil circulating hole therein has a bearing housing fixedly assembled to a stator base having a closed bottom surface; and upper and lower bearing portions; and a thrust receiving portion to rotatably support a rotating shaft. An opening oil reservoir is in the bearing housing and a lower oil reservoir is formed at the lower portion thereof. An intermediate oil reservoir is located between the upper and lower bearing portions. The oil circulating hole is formed in parallel with the rotating shaft in order to communicate with the opening oil reservoir, the intermediate oil reservoir and the lower oil reservoir. A space is defined at an opening portion which is covered with a cap in order to prevent oil from leaking.

Abstract: A fluid bearing with an oil circulating hole therein has a bearing housing fixedly assembled to a stator base having a closed bottom surface; and upper and lower bearing portions; and a thrust receiving portion to rotatably support a rotating shaft. An opening oil reservoir is in the bearing housing and a lower oil reservoir is formed at the lower portion thereof. An intermediate oil reservoir is located between the upper and lower bearing portions. The oil circulating hole is formed in parallel with the rotating shaft in order to communicate with the opening oil reservoir, the intermediate oil reservoir and the lower oil reservoir. A space is defined at an opening portion which is covered with a cap in order to prevent oil from leaking.