Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Daigo Imano

Hironori Kikuchi

Kenichi Sato

Tatsuya Sano

Nobuhiro Iwai

Nobuaki Tanaka

Mitsuharu Nakasato

Takeshi Yamaguchi

Hiroyuki Uejima

Futoshi Kuriyama

Kenya Yasutomi

Keita Endo

Tatsuo Sawada

Yasuhiro Kitajima

Yasuhiro Katajima

Teruo Kato

Chizu Fukao

Kotaro Yoshida

In a communication antenna unit which is stored inside a casing, a flexible circuit board is supported by a support member in a bent state. A first antenna conductor pattern which configures a first communication antenna and a human body sensor are substantially formed on a flat plane section of the flexible circuit board adjacent to a curved section of the flexible circuit board. A second antenna conductor pattern which configures a second communication antenna is substantially formed on the curved section. The first antenna conductor pattern and the second antenna conductor pattern are connected to each other through an inductor coil which configures a resonant circuit portion.

Communication antenna unit and mobile terminal apparatus

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 (), a foldable portable cellular phone () is provided with a battery box () opened on the side of a rear surface (), and a circuit board () having an antenna power feed point () is arranged inside a lower case (). The battery box () is covered with a battery cover section () removably attached to the lower case (). The battery cover section () is formed of a member having conductivity, and attached to the lower case () by having contact point members () in between for carrying a current to a reinforcing conductive plate () which is to be a GND layer of the circuit board (). The battery cover section () attached to the lower case () is electrically connected to the reinforcing conductive plate () by making the battery cover section abut to contact point members ().

Portable wireless device

An object of the present invention is to provide an antenna device for a radio apparatus in which the amount of energy (SAR) absorbed by a head of a human body can be reduced without lowering the power of radio waves transmitted during a call. There is provided a boardserving as a base plate of an antenna element, an antenna elementdisposed in a longitudinally end portion of the boardthrough a feeding portion, a conductor platedisposed substantially in parallel with a main surface of the boardand disposed on the opposite side to a surface having a sound hole of a receiver portion, and a plurality of short-circuit conductorsdisposed on a lower end portion of the conductor plate. The conductor plateis short-circuited to a lower end portion of the boardthrough the short-circuit conductors

Antenna device for radio apparatus and portable radio apparatus

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 () controls switching means () to connect a sub-matching circuit () and a first circuit element () 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 () and a second circuit element () 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.

Portable and foldable radio terminal with multiple frequency antenna

Radio machine antenna device and portable radio machine

The present invention provides an antenna apparatus for a wireless unit, the antenna apparatus exhibiting a reduced specific absorption rate (SAR) without an additional component for reducing the SAR, which is the amount of energy of an electromagnetic wave absorbed by a human body. The antenna apparatus comprises a boardserving as a ground plate of an antenna, a first antenna elementtransmitting and receiving an electromagnetic wave in a first frequency band and provided on the boardthrough the first feeder, and a second antenna elementtransmitting and receiving an electromagnetic wave in a second frequency band and provided on the boardthrough the first feeder, wherein the total of an electrical length between the first and second feedersand, an electrical length of the first antenna element, and an electrical length of the second antenna elementis larger than a half wavelength of the first frequency band and equal to or smaller than one wavelength of the first frequency band.

Wireless unit antenna apparatus and mobile wireless unit

A portable wireless device is formed of a lower housing and an upper housing coupled together by a hinged section, which makes the device foldable. A lower circuit board is coupled to an upper circuit board by a flexible cable, which is placed away from a power feeder of an antenna element with a given space and near the hinged section along the width direction of this foldable device. An end of conductive element is shorted to the lower circuit board with a shorting conductor near a connector which couples the flexible cable to the lower circuit board. The foregoing structure allows the portable and foldable wireless device to reduce an amount of energy supposed to be absorbed into a temporal region of a human body while the electric power of the transmitted radio wave is maintained during a phone conversation.

Growing community of inventors

Miyagi, Japan

Daigo Imano