Resources Contact Us Home
Channel selective repeater

Image Number 3 for United States Patent #5809398.

An improved repeater for receiving and re-transmitting radio signals for a cell in a cellular telecommunication system. The repeater raises the levels and is capable of converting the frequencies of the radio signals used in the telecommunication system. Due to the power amplifiers being provided between the channel selecting means and combiner, the power amplifier needs only to amplify one frequency band. In this way the repeater gets a simpler design, demands less maintenance, and gets a higher degree of efficiency in combination of high power capacity and generation of low levels only of intermodulation products.

  Recently Added Patents
Selective security termination in next generation mobile networks
Bulk message identification
Method, apparatus and system for registering in universal service interface system
Silver-containing antiseptic welding flux for stainless steel
Process for preparing 3,6-dihydro-1,3,5-triazine derivatives
Workflow execution model
Receptor holding device
  Randomly Featured Patents
Internal-combustion piston driving apparatus having a decompression channel
Foot supporting rolling device with speed reducer and brake
Separation of methanol from acetone by extractive distillation
Apparatus and method for administration of IV liquid medication and IV flush solutions
Ladle cover for vacuum refining process
Adjustable retention latch assembly
Framework of hierarchical sensory grammars for inferring behaviors using distributed sensors
Vehicle brake safety system apparatus and methods
One-shot circuit for use in a PLL clock recovery circuit
Friction rock stabilizer and method of forming same, and a method of stabilizing an earth structure