SLIDE-TYPE WIRELESS TERMINAL APPARATUS

A slide-type wireless terminal apparatus includes a first casing and a second casing slidable relative to the first casing. The wireless terminal apparatus includes a first circuit board which is provided in the first casing, an antenna which is provided in the first casing, a second circuit board which is provided in the second casing, a sliding member which is disposed between the first circuit board and the second circuit board, the sliding member including a portion which faces the antenna, the sliding member having electrical conductivity and being electrically connected to the first circuit board, and a guide member which is provided in the second casing, the guide member being for guiding the sliding member such that the sliding member slides relative to the guiding member. 1. A slide-type wireless terminal apparatus including a first casing and a second casing slidable relative to the first casing , the wireless terminal apparatus comprising:a first circuit board which is provided in the first casing;an antenna which is provided in the first casing;a second circuit board which is provided in the second casing;a sliding member which is disposed between the first circuit board and the second circuit board, the sliding member including a portion which faces the antenna, the sliding member having electrical conductivity and being electrically connected to the first circuit board; anda guide member which is provided in the second casing, the guide member being for guiding the sliding member such that the sliding member slides relative to the guiding member.2. A slide-type wireless terminal apparatus including a first casing and a second casing slidable relative to the first casing , the wireless terminal apparatus comprising:a first circuit board which is provided in the first casing;an antenna which is provided in the first casing;a sliding member which is provided in the first casing, the sliding member having electrical conductivity and being electrically ...

Radio apparatus and antenna device

There is provided a radio apparatus which includes an antenna device and a housing to which the antenna device is attached. The antenna device includes a substrate includes an electrically conductive layer with a slit. The slit is formed at an end of the electrically conductive layer so that the slit includes an opening end. The antenna element is electrically coupled with the electrically conductive layer across the opening end via a matching circuit, and receives an electric power through one end of the antenna element.

Communication apparatus

A communication apparatus includes: a wiring group to couple wiring on a first board to wiring on a second board; antenna wiring including one end coupled to a feeding unit on the first board and the other end coupled to one end of a capacitor, the other end of the capacitor being coupled to a ground conductor of the second board; and ground conductor wiring for an antenna, disposed between the antenna wiring and the wiring group, including one end coupled to a ground conductor of the first board and the other end coupled to the ground conductor of the second board.

Wireless communication apparatus

A wireless communication apparatus performs a communication using high-frequency wave having a wavelength of λ. The apparatus includes a circuit board including a feeder point and a ground, an antenna element connected to the feeder point, and a wiring element including a first end portion and a second end portion different from the first end portion, the first end portion being connected to one of the feeder point and the antenna element, the second end portion being connected to the ground, wherein the antenna element has a length of λ/4, and the wiring element has a length of 3λ/4.

ANTENNA DEVICE AND MOBILE PHONE

There is provided an antenna device that includes a substrate, a slot provided in the substrate so that the slot includes a cut opening that is close to an edge of the substrate and the slot includes a crooked portion, a conductor section configured to include a slit in an area of the substrate, the area being sandwiched by the slot in the crooked portion, and an antenna that is placed close to the conductor section and is side by side with a surface of the substrate. 1. An antenna device comprising:a substrate;a slot provided in the substrate so that the slot includes a cut opening that is close to an edge of the substrate and the slot includes a crooked portion;a conductor section configured to include a slit in an area of the substrate, the area being sandwiched by the slot in the crooked portion; andan antenna that is placed close to the conductor section and is side by side with a surface of the substrate.2. The antenna device according to claim 1 , wherein a feeding point is provided between the antenna and the conductor section.3. The antenna device according to claim 1 , wherein the conductor section is formed by making a slit in a smaller area of two areas of the substrate claim 1 , the areas being sandwiched by the slot.4. The antenna device according to claim 1 , wherein the slot includes a meander shape.5. The antenna device according to claim 1 , wherein the conductor section includes a meander shape.6. The antenna device according to claim 1 , wherein the antenna forms a folded inverted-L antenna.7. The antenna device according to claim 1 , further comprising:a dielectric material including a plate shape, wherein the substrate is placed on one surface of the dielectric material, and the antenna extends from a point at which the antenna is connected to the substrate and further extends to come into contact with the other surface of the dielectric material.8. The antenna device according to claim 1 , further comprising:a dielectric material including a ...

DATA COMMUNICATION TERMINAL APPARATUS

A data communication terminal apparatus is disclosed that includes a printed circuit board, a ground plane formed in the printed circuit board, a connector disposed on an end portion of the printed circuit board, and an antenna configured to have a feeding portion at one end and another end, the other end being connected to the ground plane via a capacitor between the feeding portion and the connector, the antenna forming a loop with the ground plane. 1. A data communication terminal apparatus comprising:a printed circuit board;a ground plane formed in the printed circuit board;a connector disposed on an end portion of the printed circuit board; andan antenna configured to have a feeding portion at one end and another end, the other end being connected to the ground plane via a capacitor between the feeding portion and the connector, the antenna forming a loop with the ground plane.2. The data communication terminal apparatus as claimed in claim 1 , further comprising a main antenna formed on the printed circuit board claim 1 , the main antenna being disposed on an opposite side to that of the end portion of the printed circuit board.3. The data communication terminal apparatus as claimed in claim 1 , wherein the capacitor is a capacitor chip mounted on the printed circuit board claim 1 , or a capacitor formed by a first edge portion of the antenna and a second edge portion of the ground plane claim 1 , the first edge portion and the second edge portion facing each other in plan view.4. The data communication terminal apparatus as claimed in claim 1 , wherein the ground plane is formed in a rectangular shape having a cutoff area which is formed beside the connector in plan view claim 1 , andwherein the antenna forms the loop with an edge of the ground plane, the edge being formed along the cutoff area.5. The data communication terminal apparatus as claimed in claim 1 , wherein the antenna is formed by patterning a conductive layer of the printed circuit board.6. The ...

Portable communication apparatus and antenna switching method

There is provided a portable communication apparatus which includes a main antenna including a first element and a second element to be capable of being resonant at a first and a third frequencies, respectively, the third frequency being one between the first frequency and a second frequency higher than the first frequency, a switch provided between the main antenna and a high-frequency circuit, a capacitor disposed in parallel to the switch, the capacitor being connected between the main antenna and the high-frequency circuit, and a control circuit configured to control the switch to turn on and off such that when the switch is in an ON state, the first element is resonant at the first frequency, while when the switch is in an OFF state, the main antenna is coupled to the high-frequency circuit via the capacitor, and the second element is resonant at the second frequency.

Antenna, method of adjusting resonance frequency thereof, and wireless communication device

An antenna adaptable to a plurality of frequencies is comprised of a first element that is connected to a feeding point (feeding portion) for operation and a second element that is connected to a grounding point (grounding portion) in proximity to the first element to be operated by coupling feeding with the first element and is configured to be operated at either or both of a first frequency and a second frequency higher than the first frequency.

Communication apparatus

A communication apparatus includes: a wiring group to couple wiring on a first board to wiring on a second board; antenna wiring including one end coupled to a feeding unit on the first board and the other end coupled to one end of a capacitor, the other end of the capacitor being coupled to a ground conductor of the second board; and ground conductor wiring for an antenna, disposed between the antenna wiring and the wiring group, including one end coupled to a ground conductor of the first board and the other end coupled to the ground conductor of the second board.

Antenna device and mobile phone