Abstract: A mobile phone includes a lower housing having one and and the other end, an upper housing having one end pivotally connected to the lower housing, and an antenna accommodated close to one end of the lower housing. The other end of the upper housing pivots toward and away from the other end of the lower housing. The mobile phone is used in close proximity to a user's head with the other end of the upper housing being distanced from the other end of the lower housing. Upon use, the lower housing is disposed relative to the upper housing so that the upper housing intervenes between the antenna and the user's head.

Abstract: A mobile phone unit is provided in which a characteristic of an antenna is improved and SAR is reduced without lowering an antenna gain during communication. An antenna 26 (electrical length ?/4), an antenna connection conductive member 22 (electrical length ?/4) that is a circuit board connected to the antenna 26, an opposite side conductive member 42 that is a circuit board opposed to the antenna connection conductive member 22, and an electric connection portion 24 that electrically connects an edge portion 222, which is on the opposite side to the antenna 26, of the antenna connection conductive member 22 and an opposite side edge portion 422, which is opposed to the edge portion 222, of the opposite side conductive member 42 (electrical length ?/4) are included. A gain on the opposite side to an LCD side casing 4 becomes large when seen from the antenna 26, and the electric currents are counteracted to be small and consequently a gain becomes small on the side of the LCD side casing 4.

Abstract: A portable wireless communication apparatus capable of attaining a broadband antenna characteristic with a simple structure is that incorporated in a mobile phone having first and second casings foldable through a hinge part and comprises first and second ground conductors respectively incorporated in the first and second casings, and a flexible printed circuit board for connecting the first and second ground conductors. The flexible printed circuit board is of a structure that signal lines for electrically connecting circuits respectively on the first and second ground conductors that are spaced at a prescribed interval are integral, through an insulator, with a conductor line for supplying a high frequency signal to either first or second ground conductor to electrically connect the first and second ground conductors through the conductor line. Then, feeding is effected with an end of a feeder connected to the conductor line.

Abstract: In a foldable portable telephone, a shield box provided within an upper casing is connected via a flexible cable to an output terminal of a transmitting circuit provided within a lower casing, and the shield box is used as an antenna. Thus, compared to the conventional case where a rod antenna is provided at an upper end of the lower casing, variation in gain dependent on a state of the user's hand holding the portable telephone is lessened.

Abstract: An antenna device and a mobile radio communication terminal adapted for improving the performance of an antenna. The antenna device includes a radio circuit for transmitting and receiving a high-frequency signal, a notch antenna having a feeder, and a notch antenna operating through electromagnetic coupling with the notch antenna, and a substrate independent of the radio circuit with respect to high frequencies. The notch antenna includes a linear slit having a length of ?/4 and cut from one edge of the substrate on the reverse side to the position of the radio circuit. The notch antenna includes a linear slit having a length slightly shorter than ?/4 and cut in parallel with the notch antenna from the same edge thereof at a position spaced apart by a predetermined distance d from the notch antenna.

Abstract: A mobile phone unit is provided in which a characteristic of an antenna is improved and SAR is reduced without lowering an antenna gain during communication. An antenna 26 (electrical length ?/4), an antenna connection conductive member 22 (electrical length ?/4) that is a circuit board connected to the antenna 26, an opposite side conductive member 42 that is a circuit board opposed to the antenna connection conductive member 22, and an electric connection portion 24 that electrically connects an edge portion 222, which is on the opposite side to the antenna 26, of the antenna connection conductive member 22 and an opposite side edge portion 422, which is opposed to the edge portion 222, of the opposite side conductive member 42 (electrical length ?/4) are included. A gain on the opposite side to an LCD side casing 4 becomes large when seen from the antenna 26, and the electric currents are counteracted to be small and consequently a gain becomes small on the side of the LCD side casing 4.

Abstract: A mobile phone includes a lower housing having one end and the other end, an upper housing having one end pivotally connected to the lower housing, and an antenna accommodated close to one end of the lower housing. The other end of the upper housing pivots toward and away from the other end of the lower housing. The mobile phone is used in close proximity to a user's head with the other end of the upper housing being distanced from the other end of the lower housing. Upon use, the lower housing is disposed relative to the upper housing so that the upper housing intervenes between the antenna and the user's head.

Abstract: A mobile phone includes a lower housing having one and and the other end, an upper housing having one end pivotally connected to the lower housing, and an antenna accommodated close to one end of the lower housing. The other end of the upper housing pivots toward and away from the other end of the lower housing. The mobile phone is used in close proximity to a user's head with the other end of the upper housing being distanced from the other end of the lower housing. Upon use, the lower housing is disposed relative to the upper housing so that the upper housing intervenes between the antenna and the user's head.

Abstract: The present invention relates to an antenna device and a mobile radio communication terminal adapted for improving the performance of an antenna. The antenna device includes a radio circuit 22 for transmitting and receiving a high-frequency signal, a notch antenna 23 having a feeder 25, and a notch antenna 24 operating through electromagnetic coupling with the notch antenna 23, and a substrate 21 independent of the radio circuit 22 with respect to high frequencies. The notch antenna 23 includes a linear slit having a length of &lgr;/4 and cut from one edge of the substrate 21 on the reverse side to the position of the radio circuit 22. The notch antenna 24 includes a linear slit having a length slightly shorter than &lgr;/4 and cut in parallel with the notch antenna 23 from the same edge thereof at a position spaced apart by a predetermined distance d from the notch antenna 23. The present invention is applicable to a mobile telephone.

Abstract: Disclosed is a radio device comprising a notch antenna, wherein the notch antenna is comprised of a circuit substrate including a ground portion and a notch portion opened at one end thereof, and a radio circuit portion provided on the circuit substrate for supplying a high-frequency current to the notch portion. In the radio device, a bent-back portion formed so as to be connected to the ground portion and to extend the notch portion is provided on one end side of the circuit substrate. This ensures that the length of the notch antenna is reduced, the size of the antenna can be reduced, antenna efficiency is enhanced, and deterioration of gain due to the influence of a human body can be suppressed.

Abstract: A noncontact transmitting apparatus includes first and second noncontact transmitting units mounted on a main device and an attachment device, respectively. The second noncontact transmitting unit is removably attachable to the first noncontact transmitting unit for enabling noncontact signal transfer between the main device and the attachment device. Each of the noncontact transmitting units includes a power coil and a signal coil. The power coil is wound on a first core to supply power from the main device to the attachment device by electromagnetic induction. The first cores of the first and second noncontact transmitting units face each other at a first position when the attachment device is loaded on the main device. The signal coil is wound on a second core for signal transfer between the main device and the attachment device by electromagnetic induction.

Abstract: The antenna device includes a linear antenna (2, 11, 15), a fixing member (7), and a power feed member (10, 12, 14). The fixing member (7) is formed from a dielectric, and holds a portion (11) of the antenna. The power feed member (12, 10) contacts the antenna (11, 15). The fixing member (7) holds the antenna (2, 11, 15) in a movable manner.

Abstract: An antenna device includes: a conductive board (3) having one end portion and the other end portion opposite the one end portion; a flat plate antenna(4, 18a, 18b, 19) mounted on the board (3) with a dielectric interposing therebetween wherein when feeding a current thereto to excite, a current also flows in said board (3); a first current direction change means (5a, 6, 6a, 6c, 7, 7a, 7c, 14a, 17a, 17c, 21a, 22a, 22b, 24a) changing a direction of the current flowing in the board (3) to a first direction when exciting the antenna (4, 18a, 18b, 19) and located on said one end portion of the board (3); and a second current direction change means (5b, 6, 6b, 6d, 7, 7b, 7d, 14b, 17b, 17d, 21b, 22c, 22d, 24b) changing a direction of the current flowing in the board (3) to a second direction different from the first direction when exciting said antenna (4, 18a, 18b, 19) and located on the other end portion of the board (3).

Abstract: A portable telephone including a main unit case and an antenna element. The antenna element includes a meander line antenna as the first antenna unit arranged within the main unit case and formed to extend in one direction, and a second antenna unit extending substantially orthogonal to the extending direction of the meander line antenna, and arranged projectable from the main unit case, having an electrical length of approximately (&lgr;/2)×A (A is an integer), and coupled to the meander line antenna.

Abstract: The present invention provides a wireless communication apparatus that allows miniaturization of the wireless communication apparatus as a whole and improvement of characteristics of an antenna device. A notch portion is formed in a shield case formed of a conductive material that covers a radio-frequency wireless communication circuit provided on a printed wiring board so as to house the radio-frequency wireless communication circuit within the shield case. By feeding power to the notch portion, the shield case is operated as a slot antenna. At the same time, the shield case blocks undesired electromagnetic waves emitted from the radio-frequency wireless communication circuit. Alternatively, a notch antenna is formed by opening one end of the notch portion formed in the shield case. By thus making the shield case function as electromagnetic wave shielding member and also function as the slot antenna or the notch antenna, the wireless communication apparatus as a whole is miniaturized.

Abstract: A portable wireless communication apparatus capable of attaining a broadband antenna characteristic with a simple structure is that incorporated in a mobile phone having first and second casings foldable through a hinge part and comprises first and second ground conductors respectively incorporated in the first and second casings, and a flexible printed circuit board for connecting the first and second ground conductors. The flexible printed circuit board is of a structure that signal lines for electrically connecting circuits respectively on the first and second ground conductors that are spaced at a prescribed interval are integral, through an insulator, with a conductor line for supplying a high frequency signal to either first or second ground conductor to electrically connect the first and second ground conductors through the conductor line. Then, feeding is effected with an end of a feeder connected to the conductor line.

Abstract: An antenna device (3a) includes a substrate (11) and an antenna (21) provided on the substrate (11) and having an electrical length of (&lgr;/2)×A (A is an integer). The antenna (21) includes a plate antenna (21b) positioned at a portion where an electrical length from an end portion (21d) is approximately &lgr;/4+(&lgr;/2)×B (B is an integer), and a meander line antenna (21a, 21c) connected to the plate antenna (21b).

Abstract: An antenna element includes a plate antenna which is substantially equivalent to a series resonant circuit, and a monopole antenna which is connected to the plate antenna and is substantially equivalent to a parallel resonant circuit.

Abstract: A portable telephone includes a metal substrate, a shield box, a monopole antenna and a feed unit. The surface of the metal substrate includes a conductive metal layer. The shield box covers a radio transmitter-receiver unit provided on the metal substrate to electromagnetically shield the radio transmitter-receiver unit, and has conductivity. The monopole antenna extends in a predetermined direction, and has an electrical length of (&lgr;/2)×N (N is an integer). The feed unit is provided at the metal substrate so as to be apart from the shield box in the extending direction of the monopole antenna. The feed unit includes a matching circuit.

Abstract: A slide lever (6) is provided to a cabinet (2) of portable radio equipment, and an antenna (3) formed by nickel elastic alloy is held by a holding member (5). A lower portion of the antenna engages with an engaging portion (61) of slide lever (6), and by sliding slide lever (6), the lower portion of antenna (3) is bent at engaging portion (61) such that the entire antenna is inclined in a vertical direction by a desired angle, thereby reducing loss due to nonconformity of polarization with respect to an antenna of a base station.