Resources Contact Us Home
Indoor mobile communication device

Image Number 5 for United States Patent #7110719.

It is an object of the present invention to provide an indoor mobile communication device having a simple structure, providing a sufficient communication range, and also providing for stable communication with a small fading effect. In order to attain this object, the present invention provides an indoor mobile communication device which is equipped with an antenna with fixed direction characteristics such as electromagnetic wave emission direction and half-power angle and is capable of mobile communications, while freely changing the position and direction inside an indoor space, this device comprising an antenna for transmission and reception of linearly polarized waves, the antenna having a half-power angle within 180 degrees and a directivity such that the emission level within a range of from 90 degrees to 270 degrees, as measured from the maximum emission direction, is less than the maximum emission level by 10 dB or more and a wireless unit for conducting modulation and demodulation of the signals superimposed on the electromagnetic waves transmitted and received via the antenna.

  Recently Added Patents
Light emitting device
Image capturing apparatus, control method thereof, and program
Adaptive frame scanning scheme for pulsed X-ray imaging
Architecture and method for multi-aspect touchscreen scanning
Image heating device
Gestures for presentation of different views of a system diagram
Image forming apparatus assembled with a fixing member and a pressing member
  Randomly Featured Patents
Venting plunger for caulk cartridges
Shoe outsole
Fingerless palm glove
Optical read/write apparatus
Method and apparatus for compactly coupling an optical fiber and a planar optical waveguide
Product for assisting a smoker in giving up the habit
Concealed biaxial card to frame grounding scheme
Insulated sleeve with conductive electrodes to reduce borehole effects for an induction tool
Refractory NZP-type structures and method of making and using same
Method and apparatus for gas analysis