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 antenna apparatus includes an antenna element having at least one slit, a first feeding point provided at a position on the antenna element, and a second feeding point provided along the slit. The antenna element is excited as an electric current antenna through the first feeding point, and at the same time, the slit is excited as a magnetic current antenna through the second feeding point.

Abstract: A mobile telephone device capable of acquiring a high sensitivity over a wide band without being obstructed by the antenna when in use and while being held by the hand of a user. In this device, a variable tuning circuit (106) and a band switching circuit (107) are connected with a loop element (104) acting as a TV receiving on-board antenna. The variable tuning circuit (106) is controlled with a tuning voltage (110) generated in a TV receiving circuit (109). A channel control unit (111) sets the received channel of the TV receiving circuit (109) and controls the band switching circuit (107) with a band switching signal (112).

Abstract: There is disclosed a mobile telephone device capable of getting a high reception sensitivity whatever the use state is. In this device, a loop element (104) is arranged in the vicinity of a hinge unit (103) of an upper case (101). The loop element (104) is connected via a matching circuit (105) to a broadcast reception circuit (106). The device is configured so that a helical element (111) is selected in an earphone connector (109) when an earphone cable (108) is removed. A reception signal of the antenna selected by the earphone connector (109) is inputted to a broadcast reception circuit (110). Demodulation signal selection circuit (113) operates to select a demodulation signal having a higher signal quality outputted from the broadcast reception circuit (106) or the broadcast reception circuit (110).

Abstract: An adaptive antenna apparatus includes two antenna elements and a parasitic element to which a variable reactance element is connected, and selects an adaptive control process according to detected signal quality. A controller executes a first adaptive control process for adaptively controlling respective signals received by the respective antenna elements and outputting the respective signals after the adaptive control as a combined received signal, and executes a second adaptive control process for reactance controlling an element value of the variable reactance element. The controller executes the first adaptive control process. The controller executes a communication process when the detected signal quality is equal to or larger than a predetermined threshold. The controller executes the second adaptive control process when the detected signal quality is not equal to or larger than the threshold.

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: A phase shift section phase-shifts the second band-restricted signal to a first phase-shifted signal and a second phase-shifted signal having a phase that is different from the phase of the first phase-shifted signal by 90 degrees. A first signal mixing section mixes the first band-restricted signal and the first phase-shifted signal. A second signal mixing section mixes the second band-restricted signal and the second phase-shifted signal. A phase difference calculation section calculates the phase difference value from the first mixed signal and the second mixed signal stripped of frequencies other than a desired baseband frequency. A polarization calculation section calculates reception polarization from the first reception field intensity value, second reception field intensity value and phase difference value.

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: By devising the case shape and antenna placement, it is possible to provide a mobile radio terminal capable of always having a high antenna sensitivity even when the mobile radio terminal is placed in a pocket of user's clothes. In this mobile radio terminal (1), the case (2) has a plane A having a flat shape and a plane B having a protruding portion (2a) at a part of the center portion or the entire portion. An antenna element (3) is placed on the protruding portion (2a) of the plane B in parallel to the plane A. Since the plane B has a protrusion or a curved shape, when the user puts the terminal into the pocket of his/her clothes, he/she unconsciously puts the terminal with the plane A in contact with his/her body side. Accordingly, the mobile radio terminal (1) is always contained in the clothes pocket with the antenna element (3) positioned at a distance from the user's body, i.e., at the farthest position from the user's body.

Abstract: A portable telephone with broadcast receiver realizing high sensitivity performance by interlocking with the screen display state both at the time of broadcast receiving and portable telephone communication, thereby attaining suitable antenna polarization characteristics. An antenna element (1) is mounted on a display section case (3) in such a manner that its helical axis direction is aligned with the longitudinal direction of a liquid crystal display section (2). The display section case (3) is connected to an upper case (5) rotatably through a rotary shaft (4). The upper case (5) is coupled to a lower case (7) to be opened/closed freely through a hinge part (6). Main polarization direction of the antenna element (1) is varied depending on the rotational state of the liquid crystal display section (2) where its screen becomes long laterally or longitudinally, thus ensuring antenna polarization characteristics suitable for both at the time of broadcast reception and portable telephone communication.

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: Provided is an antenna which has a small-sized planar constitution as can be easily mounted on a small-sized radio device and which can form a principal beam having a vertical polarization in directions of low and high elevation angles. On the surface of a substrate 11, slot elements 13A and 13B having a length of about one half wavelength are arranged in parallel at a predetermined distance d1, and a reflecting plate 14 is arranged at a predetermined distance h from the mounting face of the slot elements 13A and 13B. On the back of the substrate 11, parasitic elements 15A to 15D are made of a copper foil pattern and are arrayed to intersect the slot elements 13A and 13B at right angles. A switching element 16A is connected with the parasitic elements 15A and 15B, and a switching element 16B is connected with the parasitic elements 15C and 15D.

Abstract: An object of the invention is to provide a portable radio apparatus capable of reducing a local SAR occurring when it is set close to a human head by suppressing concentration of the current flowing through an antenna element and a ground board. A portable radio apparatus according to the invention includes a first case 8; a second case 9; a plate-shaped antenna element 1 provided in the first case 8; a conductor ground board 2 provided in the second case 9 and having a ground potential; at least two feed points 3 spaced from each other, for energizing the antenna element 1; a radio circuit 5 provided on the conductor ground board 2; a power distributor 6 for outputting so as to distribute a high-frequency power input from the radio circuit 5; and a phase compensating unit 7 for compensating phases of high-frequency powers input from the power distributor in in-phase to output the compensated high-frequency powers to the at least two feed points respectively.

Abstract: In an apparatus for measuring a specific absorption rate (SAR), a first near magnetic field distribution of a radio wave radiated from an array antenna of a reference antenna including a plurality of minute antennas is measured, and an SAR distribution with respect to the radio wave radiated from the array antenna is measured with a predetermined phantom. Then a distribution of a transformation coefficient ? is calculated by dividing the measured SAR distribution by a square of the measured first near magnetic field distribution, a second near magnetic field distribution of a radio wave radiated from a measured radio communication apparatus is measured, and an SAR distribution with respect to the radio wave radiated from the radio communication apparatus is calculated by multiplying a square of the measured second near magnetic field distribution by the calculated distribution of the transformation coefficient ?.

Abstract: A conductive metal frame attached to an upper case is electrically connected to hinge metal member. The hinge metal member is connected to a hinge metal member by a rotary shaft in a rotatable manner. The hinge metal member, a further hinge metal member, and the rotary shaft are made of conductive metal so that electric continuity is obtained at contact points thereamong. The further hinge metal member is connected to a matching circuit on a circuit board via a feedpoint terminal. A conductor element is connected to a ground pattern of the circuit board at a position close to a point at which the matching circuit is grounded. The structure as described above provides a folding portable wireless unit that can secure a high antenna performance in a calling state and a waiting state.

Abstract: A radio terminal device has an antenna element, a coil, a switch, an RF circuit section and a conductive substrate. The switch is used to switch between a case where current distribution exists only in the antenna element and its vicinities and a case where the current distribution exists not only in the antenna element and its vicinities but also in other places. Additionally, the switch is switched in accordance with the usage pattern in which the user uses the radio terminal device (e.g., telephone call and data communication). This allows the transmission/reception to be performed with the antenna polarization and directivity suitable for the usage pattern. Thus, there can be provided a radio terminal device that exhibits a reception characteristic suitable for a respective situation.

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 antenna matching apparatus capable of eliminating impedance mismatching produced when the antenna element is placed close to the human body in a short time and reducing power loss due to impedance mismatching. This apparatus connects variable capacitance capacitors VC1 and VC2 for impedance adjustment to transmission antenna element TA1, connects variable capacitance capacitors VC3 and VC4 to reception antenna element RA1 respectively, provides beforehand capacitance values of respective variable capacitance capacitors which are impedance matched in a table in a one-to-one correspondence with the distances between the antenna elements and human body and stores the table in storage section (106).

Abstract: The present invention provides an immunodeficient mouse (NOG mouse) suitable for engraftment, differentiation and proliferation of heterologous cells, and a method of producing such a mouse. This mouse is obtained by backcrossing a C.B-17-scid mouse with an NOD/Shi mouse, and further backcrossing an interleukin 2-receptor ?-chain gene-knockout mouse with the thus backcrossed mouse. It is usable for producing a human antibody and establishing a stem cell assay system, a tumor model and a virus-infection model.

Abstract: An adaptive antenna apparatus including a reception adaptive control circuit is provided. The reception adaptive control circuit adaptively controls respective received signals received by a plurality of antenna elements, and outputs the adaptively-controlled received signals as a combined received signal. A demodulator demodulates the combined received signal to a demodulated signal, and demodulates the respective received signals separately received by the respective antenna elements to demodulated signals. A controller compares signal quality of the demodulated signal of the combined received signal with signal qualities of the demodulated signals of the respective received signals separately received by the respective antenna elements, respectively, selects a demodulated signal having the highest signal quality, and controls to receive a received signal including a selected demodulated signal.