Wireless communication device having variable gain device and method therefor

Wireless communication device having variable gain device and method therefor

  • CN 1,726,617 B
  • Filed: 11/12/2003
  • Issued: 12/05/2012
  • Est. Priority Date: 12/24/2002
  • Status: Active Grant
First Claim
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1. a radio communication device is characterized in that, said radio communication device comprises:

  • The aerial array that comprises first antenna and second antenna;

    Be coupled to the first gain modulation device of said first antenna, and the second gain modulation device that is coupled to said second antenna, each of the said first and second gain modulation devices comprises;

    First signal path;

    Comprise phase-shifting element;

    Said phase-shifting element will be through said first signal path the phase shifts one of signal be selected from about 1 and spend to the value of 180 degree, said first signal path is two-way, and first variable gain device;

    Said first variable gain device comprises a two-way attenuator, and two-way decay is through the amplitude of the signal of said first signal path;

    AndThe secondary signal path;

    Comprise second variable gain device;

    Said second variable gain device comprises a two-way attenuator;

    Two-way decay is through the amplitude of the signal of said secondary signal path, and each of the amplitude of the amplitude of the signal through said first signal path and the signal through said secondary signal path can be controlled differently, the output signal plus of the secondary signal path of the gain modulation device under the output signal of said first signal path and this first signal path;

    Forming added signal, and added signal one of correspondence of being coupled to said first antenna or said second antenna;

    AndProcessor can be according to forming the beam that calculates, and adjusting is through the amplitude of one signal of the correspondence of said first signal path and said secondary signal path;

    To pass through said aerial array;

    Transmission has the signal of the characteristic of wanting, or receives signal, perhaps its combination.

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