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

  1. MONCUNILL GENIZ, FRANCISCO JAVIER
Supervised by:
  1. Pere Palà Schönwälder Director
  2. Orestes Mas Co-director

Defence university: Universitat Politècnica de Catalunya (UPC)

Fecha de defensa: 27 September 2002

Committee:
  1. Fernando José Casadevall Palacios Chair
  2. Joan Maria Miró Sans Secretary
  3. Luis Vergara Domínguez Committee member
  4. José Manuel Páez Borrallo Committee member
  5. Manuel Felipe Cátedra Pérez Committee member

Type: Thesis

Teseo: 91096 DIALNET

Abstract

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.