Carrier less modulator using saw filters

Details Carrier less modulator using saw filters Carrier less modulator using saw filters

H - Electricity

01

L

H01L 41/00 (2006.01)

Patent

CA 2643304

A system and method of carrier less modulation is described in this disclosure that uses SAW filters as a modulator in addition to their conventional use as filters for band limiting an UWB system. This system and method is primarily designed to be used with any integer cycle, ultra-wide band or impulse type modulation and more particularly is designed to work with a method of modulation named xMax. This technique exploits the impulse response of the SAW filter producing a carrier less impulse radio system with limited bandwidth, low average power, but high peak power.

La présente invention concerne un système et un procédé de modulation sans porteur qui utilise des filtres SAW en tant que modulateur en plus de leur utilisation conventionnelle en tant que filtres de limitation de bande d'un système UWB. Ce système et ce procédé sont principalement conçus pour être utilisés avec n'importe quel cycle d'entier, une bande ultra-large ou une modulation de type impulsion et plus particulièrement conçu pour fonctionner avec un procédé de modulation nommé xMax. Cette technique exploite la réponse d'impulsion du filtre SAW produisant un système radio à impulsion sans porteur à largeur de bande limitée, une alimentation moyenne faible mais une alimentation crête élevée.

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