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Phases array communication system utilizing variable frequency oscillator and delay line network for phase shift compensation

  • US 20040087294A1
  • Filed: 11/04/2002
  • Published: 05/06/2004
  • Est. Priority Date: 11/04/2002
  • Status: Abandoned Application
First Claim
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1. A communication receiver comprising:

  • a) an array of antenna elements each receiving electromagnetic radiation that includes a received signal within a first frequency band;

    b) a plurality of tuners corresponding to said array of antenna elements, each tuner comprising an amplification stage, mixer and bandpass filter stage, said amplification stage and mixer operably coupled to a corresponding antenna element and operating on said received signal received at said corresponding antenna element to downconvert said received signal to a second frequency band lower than said first frequency band, and said bandpass filter stage operating on output of said mixer to remove unwanted signal components therein; and

    c) a summing amplifier for summing output of each bandpass filter stage in said plurality of tuners to produce a combined signal that is output for subsequent processing;

    wherein oscillating waveform signals supplied to the mixers of said plurality of tuners have different phase delays to compensate for phase difference in said received signal over said array of antenna elements.

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