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
Fuse part in semiconductor device and method for forming the same
Method and apparatus for using virtual machine technology for managing parallel communicating applications
Imaging apparatus, control method thereof, and program
Wireless communication system using pilot allocation, method and pilot pattern thereof
Process for producing a carbon-comprising support
Stable nanoemulsions for ultrasound-mediated drug delivery and imaging
  Randomly Featured Patents
Radiation detector and radiation apparatus
Device in a machine handling package units
Binder composition, a construction compositon comprising said binder composition, as well as a method for preparing the construction composition and use thereof
Amino acid modulated extended release dosage form
Fabrication method for instrument material holder
Method for consolidation of fibrous nonwoven structures
Arrangement comprising an electrical printed-circuit board and an electrical pressure pick-up
Composite high strength to weight structure with fray resistance
Diffractive optical element and optical device
PBT-PC-rubber-brominated FR high tracking resistance+VO