Abstract: A main line (transmission line) has a first end and a second end. A sub-line (transmission line) coupled to the main line has a third end and a fourth end. The main line and the sub-line are coupled to each other. A direction of the main line is identical to a direction of the sub-line. An unbalanced node is connected to the first end. The first balanced node is connected to the first end, and the second balanced node is connected to the fourth end. The second end and the third end are connected to a reference potential. A first LC resonant circuit is connected between the first balanced node and the unbalanced node, the second balanced node and the fourth end, or the first end and the unbalanced node.

Abstract: A main line (transmission line) having a first end and a second end. A sub-line (transmission line) coupled to the main line. An unbalanced signal is input to and output from an unbalanced node connected to the first end. A balanced signal is input to and output from a first balanced node and a second balanced node. The main line and the sub-line are coupled to each other. A direction of the main line is identical to a direction of the sub-line. The second end and the third end are connected to a reference potential. The first balanced node and the second balanced node are connected to the unbalanced node and the fourth end, respectively. A first LC resonant circuit is connected between the second end and the reference potential or the third end and the reference potential.

Abstract: A first transmission line transformer receives and outputs an unbalanced signal and performs impedance transformation. A second transmission line transformer performs unbalanced-to-balanced transformation. The first transmission line transformer includes a first main line and a first sub-line. The direction of the first main line is identical to the direction of the first sub-line. An end of the first sub-line is grounded. An end of the first main line is coupled to the unbalanced-signal input/output node. The second transmission line transformer includes a second main line and a second sub-line. The direction of the second main line is identical to a direction of the second sub-line. An end of the second main line and the second sub-line are grounded. An end of the second main line and the second sub-line are coupled to the balanced-signal input/output nodes.

Abstract: An information determination device includes an occupant identification unit configured to identify a plurality of occupants in a vehicle, a group specification unit configured to specify, based on an identification result of the occupants, a group composed of the occupants, a storage unit configured to store group behavior information of the group and individual behavior information of the occupants, a derivation unit configured to derive group preference information based on the individual behavior information of the occupants identified by the occupant identification unit and the group behavior information of the group composed by the occupants, and a determination unit configured to determine, based on the group preference information that is derived, suggestion information to be provided to the occupants.

Abstract: An information processing apparatus includes a first acquisition unit configured to acquire a value of a stress index measured for a user of a vehicle shared by a plurality of persons during use of the vehicle, a storage processing unit configured to store the value to be associated with the user and the vehicle into a storage unit, and a selection unit configured to select a vehicle recommended to the user based on the value stored to be associated with the user in the storage unit in response to a vehicle use request from the user.