New super-regenerative architectures for direct-sequence spread-spectrum communications

• Autores: Francisco Javier Moncunill Geniz
• Directores de la Tesis: Pere Palà Schönwälder (dir. tes.), Orestes Mas (codir. tes.)
• Lectura: En la Universitat Politècnica de Catalunya (UPC) ( España ) en 2002
• Idioma: español
• Número de páginas: 415
• Tribunal Calificador de la Tesis: Fernando José Casadevall Palacios (presid.), Joan Maria Miró Sans (secret.), José Manuel Páez Borrallo (voc.), Manuel Felipe Cátedra Pérez (voc.), Luis Vergara Domínguez (voc.)
• Materias:
  • Ciencias tecnológicas
    • Tecnología electrónica
      • Diseño de circuitos
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• Resumen

  • The superregenerative receiver has been used for many decades as a low-cost and low-power receiver in short-range narrow-band communications. In this paper, we present two new architectures that make use of the superregeneration principle to achieve noncoherent detection of direct-sequence spread-spectrum signals. The local pseudorandom code generator is clocked by the quench oscillator, making the quench frequency equal to the chip rate. Under this condition, it is possible to take advantage of the characteristic broad reception bandwidth and the pulsating nature of the receiver to filter and despread the signal. The two superregenerative architectures, operating under periodic and pseudorandom quench, respectively, are analyzed and compared. Theoretical predictions are confirmed by experimental results in the ISM band of 2.4 GHz.