Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Method for producing vinyl acetate monomer
Processing financial documents
Ni-, Co-, and Mn- multi-element doped positive electrode material for lithium battery and its preparation method
Estimating travel time
Liquid crystal display device
Patterned MR device with controlled shape anisotropy
Semiconductor memory device
  Randomly Featured Patents
Motor driving circuit
Metal stud insulating pipe clamps
Pair of glasses with inclinable temples
Vehicle operating parameter determination system and method
Orienteering compass
System and method for providing location profile data for network nodes
Cleaning device with pivotable head
Apparatus for exhausting the combustion gases of a stove fired on liquid or gaseous fuel
System for enhancing the televised broadcast of a golf game
Temporary tatoo and method for manufacturing same