Abstract: An antenna includes a dielectric substrate, a ground element, a feed element, a microstrip line, and a feed point. The ground element is disposed on a first surface of the dielectric substrate. The ground element includes a slit. The feed element is disposed on a second surface of the dielectric substrate. The microstrip line extends from the feed element toward the slit. The feed point is disposed on the second surface of the dielectric substrate, and connected to the feed element via the microstrip line. The feed point is positioned between the feed element and the slit, and disposed at an end of the microstrip line.

Abstract: A first antenna element includes a first end connected to a feedpoint, a second end connected to a connection point on a ground conductor, and a fold disposed between the first and the second ends. A part of a segment between the first end and the fold of the first antenna element is disposed along the ground conductor. A second antenna element branches off the first antenna element. The second antenna element is disposed between the part of the first antenna element disposed along the ground conductor and the ground conductor. The segment between the first end and the fold of the first antenna element resonates at a first frequency. The second antenna element and a segment between the first end and a branch point of the first antenna element resonate at a second frequency that is higher than the first frequency.

Abstract: An antenna includes a dielectric substrate, a ground element, a feed element, a microstrip line, and a feed point. The ground element is disposed on a first surface of the dielectric substrate. The ground element includes a slit. The feed element is disposed on a second surface of the dielectric substrate. The microstrip line extends from the feed element toward the slit. The feed point is disposed on the second surface of the dielectric substrate, and connected to the feed element via the microstrip line. The feed point is positioned between the feed element and the slit, and disposed at an end of the microstrip line.

Abstract: A first antenna element includes a first end connected to a feedpoint, a second end connected to a connection point on a ground conductor, and a fold disposed between the first and the second ends. A part of a segment between the first end and the fold of the first antenna element is disposed along the ground conductor. A second antenna element branches off the first antenna element. The second antenna element is disposed between the part of the first antenna element disposed along the ground conductor and the ground conductor. The segment between the first end and the fold of the first antenna element resonates at a first frequency. The second antenna element and a segment between the first end and a branch point of the first antenna element resonate at a second frequency that is higher than the first frequency.

Abstract: There is provided an antenna element capable of implementing miniaturization, acquisition of a high gain, and broadening of a band and coping with multiple bands.

Abstract: There are provided an antenna element and a portable radio that enable miniaturization, acquisition of a high gain, and broadening of a band and that copies compatible with multiple bands.

Abstract: A portable radio communication device includes a first circuit board provided in a first housing, first and second radio frequency sections provided on the first circuit board, a first power supply section that supplies power from the first radio frequency section to a core wire of a coaxial cable, a second power supply section that supplies power from the second radio frequency section to an outer conductor of the coaxial cable, and an antenna element provided in the first housing. One end portion of the outer conductor is connected to a ground pattern of the first circuit board via a first reactance element, and the other end portion of the outer conductor is connected to the ground pattern of the first circuit board via a second reactance element.

Abstract: There is provided a wireless communication terminal that can accept plural wireless systems different in operating frequency by one antenna element. An antenna element 1 and a second conductive element 33 are connected to each other through a first blocking part 22 that blocks a second frequency band, the antenna element 1 and a first conductive element 23 are connected to each other through a second blocking part 32 that blocks a first frequency band, and the first wireless circuit 21 and the second wireless circuit 31 are arranged on boards different in potential to improve an isolation performance between the plural wireless systems, thereby enabling an excellent antenna performance to be obtained.

Abstract: There is provided an antenna element capable of implementing miniaturization, acquisition of a high gain, and broadening of a band and coping with multiple bands.

Abstract: There are provided an antenna element and a portable radio that enable miniaturization, acquisition of a high gain, and broadening of a band and that copies compatible with multiple bands.

Abstract: An antenna element 5 includes a substantially rectangular first conductor plate 51 that is arranged at a predetermined space S from a lower circuit board (a ground plate) 21 and in the vicinity of a hinge 4; a substantially rectangular second conductor plate 52 that shares one widthwise side of the first conductor plate 51 and that is placed while bent at an angle of about 90° with respect to the first conductor plate; and a substantially rectangular third conductor plate 53 that shares another widthwise side of the second conductor plate 52 opposing the one side of the second conductor plate 52 shared by the first conductor plate 51 and that is arranged at an angle of about 90° so as to oppose the first conductor plate 51. The rectangular parallelepiped antenna element 5 is formed by folding a rectangular, board-shaped monopole element into two faces or more.

Abstract: A slidable-type portable terminal has a first enclosure; a second enclosure; a first board arranged in the first enclosure; a second board arranged in the second enclosure; an antenna electrically connected to the first board; a connecting unit that electrically connects together the first board and the second board; a plurality of sliding units that slidably connects the first enclosure to the second enclosure; and a conductor for electrically connecting the connecting unit to one of the plurality of sliding units. The one of the plurality of sliding units is electrically connected to a ground of the connecting unit by means of the conductor.