×

Communication base station system for transmitting data to a movable body

  • US 5,574,980 A
  • Filed: 06/24/1994
  • Issued: 11/12/1996
  • Est. Priority Date: 06/24/1993
  • Status: Expired due to Fees
First Claim
Patent Images

1. A communication base station system for transmitting data to a movable body comprising:

  • a plurality of transmission means, each of said plurality of transmission means for receiving a transmission data, modulating the received transmission data, and generating an output signal by converting a frequency of the modulated transmission data to a preset transmission frequency;

    a control means for controlling said plurality of transmission means, wherein if at least two of said plurality of transmission means are not in use, said control means outputs a respective specified signal instead of said transmission data to each of two of said plurality of transmission means among said at least two of said plurality transmission means;

    an amplification means for collectively amplifying the output signal from each of said plurality of transmission means; and

    a compensation means for compensating for intermodulation distortion components generated in said amplification means based on respective preset transmission frequencies of said two of said plurality of transmission means and on respective output signals of said two transmission means.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×