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: There is provided a foldable portable radio that can exhibit high phone call performance despite its low profile and small size. An antenna element 14 to be placed in the vicinity of a first hinge element 13A is connected to a power feed unit. The first hinge element 13A has a hinge fixing unit 131 and a hinge rotating unit 132. The hinge fixing unit 131 is connected to a second radio circuit 17B of a lower circuit board 12A by way of a second matching circuit 16B. The hinge rotating unit 132 is placed while spaced apart from a ground pattern on an upper circuit board 11A by a predetermined interval and connected to an end of the ground pattern of the upper circuit board that is close to the first hinge element 13A. The antenna element 14 and the first hinge element 13A configure a first dipole antenna. The ground pattern of the upper circuit board 11A and a ground pattern of the lower circuit board 12A configure a second dipole antenna that takes the hinge element 13A as a power feed system.

Abstract: There is provided a foldable portable radio capable of exhibiting high communication performance despite its slimness and compact housings. The portable radio has an upper housing 11 in which an upper circuit board 11A is placed; a lower housing 12A in which a lower circuit board 12 is placed; a conductive hinge 13A that joins the upper housing 11 to the lower housing 12 so as to be rotatable around one axis; an antenna element 14 placed in vicinity of the hinge 13A parallel to an axial direction of the hinge 13A; and a feed section 15 connected to a radio circuit 17 on the lower circuit board 12A. The antenna element 14 is electrically connected to the feed section 15, and the hinge 13A is connected as a ground, whereby the hinge 13A and the antenna element 14 operate as a dipole antenna.

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 behind-the-ear wireless device includes a main body casing including a wireless circuit housed therein and an audio transmission unit having a function of transmitting sound to an ear. The main body casing and the audio transmission unit are integrally connected to each other, whereby the wireless device can be fitted to the ear. An antenna element having a length of about half wave length is disposed in a hollow of the sound tube. A parasitic element having a length of about a half wave length is disposed in the main body casing.

Abstract: A collapsable portable wireless unit (100) comprises an upper case (101) and a lower case (102) coupled through a hinge member (103) to open/close freely. A planar conductor (105) is arranged on the upper case (101). First and second power supply sections (111, 112, 103) are arranged on the planar conductor (105) at a specified interval. A harmonic signal distributor (120) is arranged on a circuit board (110) provided in the lower case (102) and distributes a harmonic signal to the first and second power supply sections (111, 112, 103). A phase shifter (121) sets the exciting phase of the harmonic signal in the second power supply sections (112, 103) at a value different from that of the exciting phase of the harmonic signal in the first power supply sections (111, 103).

Abstract: There is provided a mobile telephone assuring a high reception sensitivity over a wide band without deteriorating the design of the mobile telephone. In the mobile telephone, a helical antenna (4) operating as an antenna for television reception is formed by winding a conductive element along the external surface of the case several times at the upper end of the upper case (1). The helical antenna (4) is impedance-matched by a matching circuit (5) in a range of the order from 470 MHz to 700 MHz which is the television broadcast frequency. The matching circuit (5) is connected to a broadcast reception circuit (6). The broadcast reception circuit (6) operates as a reception circuit for receiving the television broadcast wave.

Abstract: A portable wireless unit capable of ensuring high speed, large capacity communication by lowering the correlation coefficient between antennas under various use states of a user. An antenna element (1) is arranged outside from the upper end of a case (4) on the side opposite to the display section (23) of the case, an antenna element (2) is arranged in parallel with and on the same side of the antenna element (1) while spaced apart in the width direction, and an antenna element (3) is arranged in parallel with the antenna element (1) from the display section (23) side spaced apart from the antenna element (1) in the thickness direction. The antenna element (1) is connected with a transmitter/receiver (14), and any one of the antenna element (2) or (3) is selected by controlling a high frequency switch (11) by angle information from a gravity sensor (22) and connected with the transmitter/receiver (14).

Abstract: A portable wireless apparatus has an antenna capable of resonating in frequency bands of various communication systems. The portable wireless apparatus comprises an upper case 5; a lower case 4 pivotably connected to the upper case 5; a circuit board 1 formed with wireless circuits 14 to 18 and a grounded planar conductor electrically connected to one ends of the wireless circuits 14 to 18; a planar conductor 2 provided in the upper case 5 and having a feed section electrically connected to the other ends of the wireless circuits 14 to 18; and a conductive element 3 provided in the upper case 5 and spaced from the planar conductor 2, the conductive element 3 having a length different from the length of the planar conductor 2 wherein the planar conductor 2 and the grounded planar conductor function as a dipole antenna, and the conductive element 3 functions as a parasitic element electromagnetically coupled with the dipole antenna.

Abstract: A portable wireless device in which, in various states where the user uses the portable wireless device, the correlation coefficient between antennas can be reduced, and high-speed and high-capacity communication can be ensured is provided. In a portable wireless device 10, from the upper end of a case on the side opposed to a side of a display portion 37 of a case 11, a first antenna element 12 which is slightly shorter by 0.05 wavelengths than the half wavelength is placed, and a second antenna element 13 in which the element length is slightly shorter by 0.05 wavelengths than the half wavelength is placed at a predetermined gap in the width direction in parallel to the first antenna element 12. The first antenna element 12 is connected to a first shared transmitting/receiving unit 23, and the second antenna element 13 is connected to a second shared transmitting/receiving unit 24.

Abstract: A portable wireless apparatus has an antenna capable of resonating in frequency bands of various communication systems. The portable wireless apparatus comprises an upper case 5; a lower case 4 pivotably connected to the upper case 5; a circuit board 1 formed with wireless circuits 14 to 18 and a grounded planar conductor electrically connected to one ends of the wireless circuits 14 to 18; a planar conductor 2 provided in the upper case 5 and having a feed section electrically connected to the other ends of the wireless circuits 14 to 18; and a conductive element 3 provided in the upper case 5 and spaced from the planar conductor 2, the conductive element 3 having a length different from the length of the planar conductor 2 wherein the planar conductor 2 and the grounded planar conductor function as a dipole antenna, and the conductive element 3 functions as a parasitic element electromagnetically coupled with the dipole antenna.

Abstract: A portable wireless device realizing high-speed transmission in downlink communication in a used state that a foldable portable wireless device is held in a hand of the user and ensuring a high antenna radiation efficiency. In the portable wireless device, platy conductors (1, 3, 4) are arranged in the longitudinal direction on the back of a display section (35) of an upper case (5). The signal of a transmission circuit (25) is distributed by a power distributor (18). One signal is fed to a platy conductor (1) through a phase shifter (17) and the other is fed to the platy conductor (3) or the platy conductor (4) from a high-frequency switch (19) through a transmission/reception duplexer (20) or a transmission/reception duplexer (21). The high-frequency switch (19) selectively feeds power to either the platy conductor (3) or the platy conductor (4) according to the signal from a gravity sensor (26).

Abstract: A mobile radio apparatus that achieves high radiation efficiency in various usage states of a foldable mobile radio apparatus without causing negative impact on communication, and that can realize a thin model. In this mobile radio apparatus that is foldable and that has a mechanism joining a first case and second case at a hinge part and allowing the mobile radio apparatus to open and close, flat conductor (104), flat conductor (106) and flat conductor (107) that are placed distant from flat conductor (104) are placed in the first case, gravity sensor (122) detects an inclination angle of the mobile radio apparatus to judge the usage state of the mobile radio apparatus, and control section (123) controls high frequency switch (112) according to the inclination angle and supplies power selectively to flat conductor (106) and flat conductor (107).

Abstract: It is an object of the invention to provide a portable wireless apparatus capable of maintaining high quality of a communication in various using configurations obtained by a two-axis hinge mechanism. A portable wireless apparatus (100) having a two-axis hinge portion includes a first antenna (102) which is suitable for a talking state and a second antenna (104) which is suitable for a waiting state. The first antenna (102) or the second antenna (104) is selected based on a result of opening/closing detection decided from an angle ? of a first axis (106) and the result of opening/closing detection decided from an angle ? of a second axis (107). Consequently, it is possible to select either of the antennas which is not influenced by hands or fingers of a user.

Abstract: A collapsable portable wireless unit (100) comprises an upper case (101) and a lower case (102) coupled through a hinge member (103) to open/close freely. A planar conductor (105) is arranged on the upper case (101). First and second power supply sections (111, 112, 103) are arranged on the planar conductor (105) at a specified interval. A harmonic signal distributor (120) is arranged on a circuit board (110) provided in the lower case (102) and distributes a harmonic signal to the first and second power supply sections (111, 112, 103). A phase shifter (121) sets the exciting phase of the harmonic signal in the second power supply sections (112, 103) at a value different from that of the exciting phase of the harmonic signal in the first power supply sections (111, 103).

Abstract: There is provided a mobile telephone assuring a high reception sensitivity over a wide band without deteriorating the design of the mobile telephone. In the mobile telephone, a helical antenna (4) operating as an antenna for television reception is formed by winding a conductive element along the external surface of the case several times at the upper end of the upper case (1). The helical antenna (4) is impedance-matched by a matching circuit (5) in a range of the order from 470 MHz to 700 MHz which is the television broadcast frequency. The matching circuit (5) is connected to a broadcast reception circuit (6). The broadcast reception circuit (6) operates as a reception circuit for receiving the television broadcast wave.

Abstract: A portable wireless device realizing high-speed transmission in downlink communication in a used state that a foldable portable wireless device is held in a hand of the user and ensuring a high antenna radiation efficiency. In the portable wireless device, platy conductors (1, 3, 4) are arranged in the longitudinal direction on the back of a display section (35) of an upper case (5). The signal of a transmission circuit (25) is distributed by a power distributor (18). One signal is fed to a platy conductor (1) through a phase shifter (17) and the other is fed to the platy conductor (3) or the platy conductor (4) from a high-frequency switch (19) through a transmission/reception duplexer (20) or a transmission/reception duplexer (21). The high-frequency switch (19) selectively feeds power to either the platy conductor (3) or the platy conductor (4) according to the signal from a gravity sensor (26).

Abstract: A mobile radio apparatus that achieves high radiation efficiency in various usage states of a foldable mobile radio apparatus without causing negative impact on communication, and that can realize a thin model. In this mobile radio apparatus that is foldable and that has a mechanism joining a first case and second case at a hinge part and allowing the mobile radio apparatus to open and close, flat conductor (104), flat conductor (106) and flat conductor (107) that are placed distant from flat conductor (104) are placed in the first case, gravity sensor (122) detects an inclination angle of the mobile radio apparatus to judge the usage state of the mobile radio apparatus, and control section (123) controls high frequency switch (112) according to the inclination angle and supplies power selectively to flat conductor (106) and flat conductor (107).

Abstract: An object of the invention is that a user obtains high antenna gain with a simple construction in various use conditions of a portable wireless unit. To achieve the above object, in the invention, of a conductive antenna element, a part of a length of a substantially half-wavelength is used as a monopole part (1), and is disposed along the inside of a housing at the upper end of a portable wireless unit. Of the antenna element, the remaining part of a length of a substantially ¼ wavelength is used for an inverted-F antenna part (2), and disposed parallel to a ground plate surface within the housing of the portable wireless unit. The inverted-F antenna part (2) is disposed parallel to the upper end of the portable wireless unit (6). One end of the inverted-F antenna part (2) is connected to the ground plate (5) through an earthing point (3) provided at one end. A feeding point (4) is provided spaced from the earthing point by a predetermined distance.

Abstract: An object of the invention is that a user obtains high antenna gain with a simple construction in various use conditions of a portable wireless unit.