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Digital exciter/phasor/transmitter for directional antenna system

  • US 20010017602A1
  • Filed: 01/05/2001
  • Published: 08/30/2001
  • Est. Priority Date: 01/07/2000
  • Status: Active Grant
First Claim
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1. A radio frequency transmission system incorporating an envelope delay within a broadcast signal to achieve a directional pattern, the system comprising:

  • an oscillator configured to provide a digital carrier wave;

    a delay stage in electrical communication with the oscillator to receive the digital carrier wave and further receiving digital audio, the delay stage configured to delay the digital carrier wave and digital audio by a delay value and to convert the digital carrier wave to an analog carrier wave and the digital audio to analog audio; and

    a modulator in electrical communication with the delay stage and configured to provide amplitude modulation of the analog carrier wave with the analog audio to thereby generate an amplitude modulated carrier wave with an envelope delay.

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