Murata Manufacturing Co., Ltd.

Asahi Kasei Fibers Corporation

Asahi Kasei Kabushiki Kaisha

Masato Enoki

Fumiaki Ise

Yasunori Takaki

Kenji Hayashi

Takeshi Tanaka

Tokio Okuno

A planar antenna includes a planar radiation conductor, a common ground conductor, a first strip conductorlocated between the planar radiation conductorand the common ground conductorand extending in a direction in parallel to a first axis in a first right rectangular coordinate system including first, second, and third axes, a second strip conductorlocated between the planar radiation conductor and the common ground conductor and extending in a direction orthogonal to a direction of extension of the first strip conductor, and at least one pair of passive conductorstoeach including a side at an angle of 45±3° or −45±3° with respect to the first axis and opposed to the planar radiation conductor.

Planar antenna, planar array antenna, multi-axis array antenna, and wireless communication module

A multi-band antenna is capable of transmitting/receiving electromagnetic waves at least in a first wavelength band of a first center wavelength &#x3bb;and a second wavelength band of a second center wavelength &#x3bb;, which is shorter than the first center wavelength &#x3bb;, the multi-band antenna including at least one antenna unit, wherein the at least one antenna unit includes: a first radiation conductor; and a first ground conductor spaced apart from the first radiation conductor with a dielectric having a relative dielectric constant &#x3b5;r interposed therebetween, wherein: the first radiation conductor and the first ground conductor each have a planar shape having a pair of opposing first sides; and a distance Lrfbetween the pair of opposing first sides of the first radiation conductor and a distance Lgbetween the pair of opposing sides of the first ground conductor satisfy expressions below:0.2&#x3bb;1/&#x3b5;1&#x2264;0.7&#x3bb;1/&#x3b5;; and0.7&#x3bb;2/&#x3b5;1&#x2264;1.75&#x3bb;2/&#x3b5;.

Multi-band antenna and method for designing multi-band antenna

The purpose of the present invention is to provide a base fabric for airbags with excellent deployment speed, internal pressure retention and workability, and an airbag using the same. The inventive base fabric for airbags has resin arranged in at least one surface of the cloth which comprises synthetic fibers, and is characterized in that the amount of resin adhered is from 10 to 50 g/mand, further, the weaving thread's filaments is exposed on the resin surface, and the weaving thread's filaments exposure rate is from 1 to 25%.

Base fabric for airbags

An object of the present invention is to provide a base fabric suitable for the production of a general-purpose airbag having a higher airtight performance with reduced air permeability, a high pressure resistance in the boundary portion between the inflating part and the non-inflating part, and a high impact absorption for an occupant, and a base fabric for an airbag of the present invention comprises a woven fabric formed of a multifilament synthetic fiber having a total fineness of 200 to 550 dtex and a single filament fineness of 2.0 to 7.0 dtex, wherein the elongation is, on average of warp and weft, from 5 to 15% and from 15 to 30% under loads of 50 N/cm and 300 N/cm, respectively, and the pullout resistance of the constituent yarn is from 50 to 200 N/cm/cm on average of warp and weft.

Growing community of inventors

Tokyo, Japan

Masato Enoki