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: Disclosed is a mobile wireless device, which has an antenna structure for feeding a hinge core with an electric power and which can be adapted to wireless communications of low-frequency bands without enlarging a casing itself. In this wireless device, an upper casing (101) equipped with a first circuit substrate (111) and a lower casing (102) equipped with a second circuit substrate (112) having a wireless unit (118) mounted thereon are connected to open and close through a hinge unit having a conductive hinge (130). A feeding unit (113) mounted in the upper casing (101) feeds the conductive hinge (130) with an electric power from the first circuit substrate (111).

Abstract: There is provided a mobile wireless device capable of preventing antenna characteristics from degrading by feeding electric power at a position hardly affected by a human body such as a hand or other body part. In the mobile wireless device, a first circuit board (101) is provided on a first chassis (110) and has a ground layer; a second circuit board (105) is provided on a second chassis (120) and has a ground layer. A ground terminal of a wireless portion (104) is connected to the ground layer of the first circuit board (101) at the same voltage level and is also electrically connected through the wireless portion (104) to a matching circuit (103). The ground layer of the second circuit board (105) is electrically connected to a hinge conducting portion (106) by electrostatic capacitance coupling. The hinge conducting portion (106) is connected through a third conduction portion (107) to a board connection portion (102) and feeds power to the wireless portion through the matching circuit (103).

Abstract: A challenge to be met by the present invention is to provide a radio communication apparatus that enables prevention of a drop in antenna gain, which would otherwise arise when an apparatus main body is placed on a metal plate, such as a metallic desk, at low cost. A second antenna element (3) is placed at such a position where resonance arises at a frequency band of a first antenna element (2) and connected to a ground pattern of a circuit board (10) by way of an antenna grounding unit (8) connected exclusively to a radio system unit (7). Further, a reactance unit (82) of the antenna grounding unit (8) performs regulation such that the second antenna element (3) is electromagnetically coupled with the metal plate, to thus cause resonance at a predetermined frequency, when the apparatus main body is placed on the metal plate and that the resonance frequency becomes a frequency band of the first antenna element (2).

Abstract: Provided is a portable communication device, specifically a portable wireless device which is thin while maintaining excellent reception sensitivity even when the device is laid on a metal top panel. As such device (100), a foldable portable cellular phone (100) is provided with a battery box (117) opened on the side of a rear surface (115), and a circuit board (121) having an antenna power feed point (124) is arranged inside a lower case (114). The battery box (117) is covered with a battery cover section (140) removably attached to the lower case (114). The battery cover section (140) is formed of a member having conductivity, and attached to the lower case (114) by having contact point members (151, 152) in between for carrying a current to a reinforcing conductive plate (125) which is to be a GND layer of the circuit board (121).

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: A pneumatic tire improved in on-ice performance and on-snow performance in good balance. The pneumatic tire includes a tread portion extending in a tire circumferential direction and forming a ring shape, a pair of sidewall portions on both sides of the tread portion, respectively, and a pair of bead portions on inner sides of the sidewall portions in a tire radial direction, respectively. The tread portion includes a plurality of longitudinal grooves extending in the tire circumferential direction and a plurality of lateral grooves extending in a tire width direction. The longitudinal and lateral grooves define a plurality of block rows each including a plurality of blocks. Each of the plurality of blocks included in at least one of the block rows includes at least three closed grooves including at least one first closed groove and at least one second closed groove.

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: Disclosed is a composition containing carbon nanotubes which meets all of the following conditions (1) to (4). (1) When observed via transmission electron microscopy, at least 50 out of every 100 carbon nanotubes are double-walled carbon nanotubes. (2) The carbon nanotubes have an average outer diameter in the range of 1.0 to 3.0 nm. (3) During thermogravimetric analysis under atmosphere at a temperature increase rate of 10° C./minute, a high temperature combustion peak is at 700 to 850° C., and the relationship between low temperature weight loss (TG(L)) and high temperature weight loss (TG(H)) is TG(H)/(TG(L)+TG(H))?0.75. (4) The composition containing carbon nanotubes has a volume resistance value between 1.0×10?2 ?·cm and 1.0×10?4 ?·cm, inclusive. The disclosed composition containing carbon nanotubes primarily has double-walled carbon nanotubes with high electrical conductivity and high heat resistance.

Abstract: A foldable portable radio device adapted to a plurality of frequency bands has a good antenna performance in all the use frequency bands even in both open and folded states. In the foldable portable radio device, a control section (24) controls switching means (20) to connect a sub-matching circuit (19) and a first circuit element (21) when a first use frequency band is used and further when the foldable portable radio device is in the open state and to connect the sub-matching circuit (19) and a second circuit element (22) when a first use frequency band is used and further when the foldable portable radio device is in the closed state, or when a second use frequency band is used irrespective of the open/closed state of the foldable portable radio device.

Abstract: A light modulation panel is inserted into an optical path of an imaging lens composed of an image-forming optical system to make the imaging lens function as a depth-of-field-extended optical system. The light modulation panel has power that makes a peak position of defocus MTF when the imaging lens is used alone to function as the image-forming optical system and a peak position of defocus MTF when the imaging lens functions as the depth-of-field-extended optical system by insertion of the light modulation panel into the optical path of the imaging lens coincide with each other.

Abstract: An imaging system is provided and includes an imaging lens and an imaging device such that the maximum diameter of an effective region of a point image covers three or more pixels of light receiving pixels, the point image being projected onto a light receiving surface through the imaging lens from an intended position. A signal processing unit executes restoration processing on first image data output from the imaging device, and the restoration processing is executed to generate second image data equivalent to the first image data output from the imaging device when the resolving power of the imaging lens is higher. The imaging lens has a first lens group having a positive power, a second lens group having a negative power, and a third lens group in which a lens positioned closest to an image side has a positive power, in order from the object side.

Abstract: A light modulation panel is inserted into an optical path of an imaging lens composed of an image-forming optical system to make the imaging lens function as a depth-of-field-extended optical system. The light modulation panel has power that makes a peak position of defocus MTF when the imaging lens is used alone to function as the image-forming optical system and a peak position of defocus MTF when the imaging lens functions as the depth-of-field-extended optical system by insertion of the light modulation panel into the optical path of the imaging lens coincide with each other.

Abstract: A problem of the invention is to provide a small-size communication terminal apparatus capable of reducing an SAR and also widening a band of an antenna and further achieving thinning. The communication terminal apparatus has a substrate (13) disposed inside a housing, a power feeding part (12) disposed in the substrate (13), a monopole antenna (11) having plural elements of multi-frequency sharing, the monopole antenna for feeding power by electrically connecting one end to the power feeding part, and a ground wire (14) electrically connected to a wireless ground of the substrate (13), and the monopole antenna (11) having the plural elements is arranged in a direction vertical to a surface of the substrate (13) and in a back surface direction of the housing so as to be opposed to a human body at the time of a call.

Abstract: An aggregate of carbon nanotubes satisfying all of the following requirements (1) to (3): (1) the volume resistivity is from 1×10?5 ?·cm to 5×10?3 ?·cm; (2) at least 50 out of 100 carbon nanotubes are double-walled carbon nanotubes in observation by a transmission electron microscope; and (3) the weight loss from 200° C. to 400° C. in thermogravimetry at a temperature rise of 10° C/min is from 5% to 20%.

Abstract: A cabin for a work vehicle comprises: a driver's seat positioned within the cabin; cabin frames including at least a transverse frame located in a rear region of the cabin; a roof supported by at least some of the cabin frames; at least one air-conditioning duct located within the roof; an air conditioning unit located rearwardly with respect to a rearward end of a seat portion of the driver's seat and adjacent the transverse frame for conditioning air and for feeding air-conditioned air into the at least one air-conditioning duct.

Abstract: A photodiode array 1 has a plurality of photodetector channels 10 which are formed on an n-type substrate 2 having an n-type semiconductor layer 12, with a light to be detected being incident to the plurality of photodetector channels 10. The photodiode array 1 comprises: a p?-type semiconductor layer 13 formed on the n-type semiconductor layer 12 of the substrate 2; resistors 4 each of which is provided to each of the photodetector channels 10 and is connected to a signal conductor 3 at one end thereof; and an n-type separating part 20 formed between the plurality of photodetector channels 10. The p?-type semiconductor layer 13 forms a pn junction at the interface between the substrate 2, and comprises a plurality of multiplication regions AM for avalanche multiplication of carriers produced by the incidence of the light to be detected so that each of the multiplication regions corresponds to each of the photodetector channels.

Abstract: A photodiode array 1 has a plurality of photodetector channels 10 which are formed on an n-type substrate 2 having an n-type semiconductor layer 12, with a light to be detected being incident to the plurality of photodetector channels 10. The photodiode array 1 comprises: a p?-type semiconductor layer 13 formed on the n-type semiconductor layer 12 of the substrate 2; resistors 4 each of which is provided to each of the photodetector channels 10 and is connected to a signal conductor 3 at one end thereof; and an n-type separating part 20 formed between the plurality of photodetector channels 10. The p?-type semiconductor layer 13 forms a pn junction at the interface between the substrate 2, and comprises a plurality of multiplication regions AM for avalanche multiplication of carriers produced by the incidence of the light to be detected so that each of the multiplication regions corresponds to each of the photodetector channels.

Abstract: An imaging lens comprises, in order from an object side: a first lens having a positive refractive power; a second lens having a negative refractive power whose concave surface faces to the object; and a third lens having a positive refractive power and having a meniscus form that has a convex surface, facing to the object, in a portion at and around an optical axis of the imaging lens; wherein the first, second and third lenses have at least one aspheric surface, and wherein the imaging lens satisfies conditional expressions given below: 0.7<f1/f<1.3 ??(1) 0.3<D2/f<0.5 ??(2) 1.0<|f2/f|<3.0 ??(3) 1.2<f3/f<4.0 ??(4) where f: a focal length of an overall system, f1: a focal length of the first lens, f2: a focal length of the second lens, f3: a focal length of the third lens, and D2: a spacing, on the optical axis, between the first lens and the second lens.