Matsushita Electric Works, Ltd.

Other

Masayuki Matsuo

Toshio Abiko

Kazuhiro Matsumoto

Minoru Kanda

Katsuya Tsukamoto

Takashi Saeki

Yasuhiro Fujii

Yoshihiro Kitsuda

Mikio Komatsu

Yoshiaki Ueno

Kyoji Masamoto

Sadahiko Nishimura

Toshio Makimoto

Hidetsugu Nunoya

Yasumasa Ogawa

Hajime Takeda

Sadaaki Kondo

Hirohumi Ishizaki

Hiroshi Chujo

Yasuo Yabu

Hiroshi Yokota

Hideki Oka

Shinsuke Ueda

Masakatsu Niwa

Shuji Taniguchi

Shoji Miyanari

Naoyuki Noda

Kazunori Matsumoto

This antenna unit is adapted to be connected to an electronic device for transmitting a received radio signal to the electronic device. The antenna unit comprises a noise canceller for canceling noise generated in the electronic device and transmitted to the antenna unit through a ground line. The noise canceller is a conductive stub piece one end of which is electrically connected to an electromagnetic shield of the antenna unit and the other end of which is a free end. The stub piece has a length of about &#xbc; of a wavelength of the radio signal.

Antenna unit

A top loaded antenna unit is provided for concealed mounting within a vehicle below a covering or panel of dielectric material. The antenna unit includes a top load plate, a ground plate disposed in a spaced relation to the top load plate and electromagnetically coupled thereto through a matching element. The antenna unit additionally includes a dielectric member which is disposed in proximity to the top load plate for shifting resonance frequency of the antenna to a predetermined extent. The top load plate and the ground plate are assembled together with the dielectric member into a unitary structure for mounting within the vehicle below the covering or panel of dielectric material, at which condition resonance frequency of the antenna can be free from being affected from the covering or panel of the vehicle but affected solely from the dielectric member of which effect on the frequency shifting is known. Whereby, the antenna can give stable resonance frequency as intended only in consideration of the dielectric member and without being substantially influenced by other outside environments.

Concealedly mounted top loaded vehicular antenna unit

A top loaded antenna comprises a spaced pair of top load plate and a ground plate. A matching element integrally formed with a feedline and a shortline is disposed between the top plate and the ground plate for coupling between the plates, eliminating the necessity of separately and individually coupling the feedline element and shortline element to the plates.

Top loaded antenna

A microwave plane antenna including rows comprising pairs of parallel conductive line antenna elements configured as a pair of out-of-phase square waves and a signal feed circuit of strip lines arranged as a corporate feed network. The respective conducting paths which run from a main feed inlet end of the circuit to each signal receiving end of the respective elements being varied in length, so that the main beam direction can be set in a plane including that of the antenna and normal to lengthwise axis of the antenna elements for a remarkable increase in the reception gain.

Microwave plane antenna with two arrays which have beams aligned in the

A plane antenna comprises a power-supply circuit, a radiator circuit and an earthing conductor which are stacked respectively with a dielectric layer interposed between them, in which the power-supply and radiator circuits are made independent of each other as electromagnetically coupled to each other and at least one of the dielectric layers is formed with a foamed resin, whereby insertion loss can be reduced to remarkably improve the antenna characteristics. Only with the interposition of the foamed resin dielectric layer or layers, an effective separation is achieved between at least the power-supply circuit and the earthing conductor or the power-supply circuit and the radiator circuit, for a large extent improvement in the assembling ability.

Planar antenna

A microwave plane antenna comprises a plurality of pairs of antenna elements connected at their one end to a power supply circuit and respectively including at the other terminating end an impedance-matched patch antenna means, whereby signal energy remaining at the terminating ends of the antenna elements is caused to be effectively utilized as radiation energy, and any power loss is restrained for a high antenna gain and improved aperture efficiency.

Planar microwave antenna having high antenna gain

A microwave plane antenna in which antenna bodies carrying thereon respectively at least a pair of microstrip lines are mounted to a supporting frame through means for movably positioning the antenna bodies along a plane including an axis perpendicular to the plane of the antenna body and another axis in the width direction of each pair of the microstrip lines, whereby the main beam direction of the plane antenna is made settable optionally in three-dimensional zone to be in the optimum direction with respect to a geostationary broadcasting satellite for remarkably improving the reception gain.

Microwave plane antenna

This invention relates to a hand simulator usable for hand sign or signal. The hand simulator comprises a palm portion of cushiony material and five finger portions of cushiony material integrally extending from the palm portion. The five finger portions are normally extended and spaced at their finger tips. The palm portion has a plurality of holes provided therein. The finger portions are selectively inserted into the corresponding holes to give a manual sign or signal.

Hand simulator

An asynchronous multichannel signal processing system comprises a transmitter and a receiver. A transmitter is adapted to transmit a signal converted from data being transmitted including address data and control data such that one information unit comprises a plurality of units each including one frequency signal. The receiver is adapted to reproduce the received data by discriminating the frequency component included in the received signal. At that time, a plurality of readings of received data are reproduced in one unit time period of the transmitted signal. If and when the address data included in at least one of the plurality of readings of received data coincides with its own address data of the receiver, the control data is extracted from the received data including the coincided address data.

Asynchronous type multichannel signal processing system

Growing community of inventors

Neyagawa, Japan

Masayuki Matsuo