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Devices and methods for ultra-wideband communications

  • US 7,822,097 B2
  • Filed: 08/22/2005
  • Issued: 10/26/2010
  • Est. Priority Date: 08/20/2004
  • Status: Expired due to Fees
First Claim
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1. A method for generating an ultra-wideband communications signal, comprising in combination:

  • generating at least one piecewise linear pulse having at least two substantially linear parts, wherein at least one of the substantially linear parts is formed by charging at least a first capacitor and a second capacitor and at least the other of the substantially linear parts is formed by discharging at least the first and second capacitors;

    generating a piecewise linear ultra-wideband baseband signal having at least one of the piecewise linear pulses, wherein the baseband signal is generated based on an inputted data signal;

    generating a carrier tone having a carrier frequency suitable for wireless transmission;

    upconverting the baseband signal with the carrier tone to the carrier frequency, thereby generating the ultra-wideband communications signal;

    generating a timing signal arranged for timing the charging and the discharging of at least the first and second capacitors, wherein the timing signal is based on the output of a comparator comparing a voltage on the first capacitor and the second capacitor with a reference voltage; and

    connecting and disconnecting at least the first capacitor from the comparator using a data signal controlled switch, wherein the second capacitor is parallel to the first capacitor and the switch.

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