Abstract: A radio-frequency module is provided that includes a structure, a filtering element disposed on the structure, a switching element embedded in the structure, and an impedance element connected to the switching element and the filtering element. In a plan view of the structure, the switching element and the filtering element overlap each other in at least part thereof. The structure has a plurality of vias including a via , a via and a via. The via connects the input-output terminal and the filtering element. The via connects the ground terminal and an impedance adjustment circuit including the switching element and the impedance element. In a plan view, the via is located in a smallest rectangular region encompassing the vias.

Abstract: To provide excellent reception performance on a narrow area of an automotive window glass, it is provided an antenna to be arranged on a window glass of a vehicle, the antenna comprising: a core-side power feeding unit; an earth-side power feeding unit; a first element extending from the core-side power feeding unit; and a second element extending at an angle of approximately 90 degrees with respect to the first element from the core-side power feeding unit, the first element having a length of 3??/4+? and the second element having a length of ??/4??, or the first element having a length of 3??/4?? and the second element having a length of ??/4+?, where ? refers to a wavelength of a reception frequency, ? refers to a wavelength shortening rate of glass, and ? refers to an offset length for each of the first element and the second elements.

Abstract: To provide high sensitivity to high frequency band signals, it is provided an antenna to be arranged on a window glass of a vehicle, the antenna comprising: a planar conductor to be arranged on the window glass; a slot formed as a rectangular region obtained by removing a conductor from the planar conductor; a power feeding unit arranged on a first side of the slot; and an element extending from a core-side terminal of the power feeding unit to a second side of the slot opposite to the first side, the slot being disposed at a position offset from a center of the planar conductor in a direction toward the first side.

Abstract: To provide high sensitivity to high frequency band signals, it is provided an antenna to be arranged on a window glass of a vehicle, the antenna comprising: a planar conductor to be arranged on the window glass; a slot formed as a rectangular region obtained by removing a conductor from the planar conductor; a power feeding unit arranged on a first side of the slot; and an element extending from a core-side terminal of the power feeding unit to a second side of the slot opposite to the first side, the slot being disposed at a position offset from a center of the planar conductor in a direction toward the first side.

Abstract: To provide excellent reception performance on a narrow area of an automotive window glass, it is provided an antenna to be arranged on a window glass of a vehicle, the antenna comprising: a core-side power feeding unit; an earth-side power feeding unit; a first element extending from the core-side power feeding unit; and a second element extending at an angle of approximately 90 degrees with respect to the first element from the core-side power feeding unit, the first element having a length of 3a?/4+? and the second element having a length of a?/4??, or the first element having a length of 3a?/4?? and the second element having a length of a?/4+?, where A refers to a wavelength of a reception frequency, a refers to a wavelength shortening rate of glass, and ? refers to an offset length for each of the first element and the second elements.