Modulators – Pulse or interrupted continuous wave modulator – Pulse position – frequency – phase – or spacing modulator
Reexamination Certificate
2006-02-21
2006-02-21
Kinkead, Arnold (Department: 2817)
Modulators
Pulse or interrupted continuous wave modulator
Pulse position, frequency, phase, or spacing modulator
C713S500000, C327S164000, C327S291000
Reexamination Certificate
active
07002425
ABSTRACT:
A pulse modulator comprises a delay arrangement for receiving a first sequence of pulses and for delaying each received pulse several times to obtain a plurality of sequences of pulses having different phases. The pulse modulator further comprises a selection component for receiving from the delay arrangement a plurality of sequences of pulses having different phases, for receiving a modulating signal, wherein each possible value of the modulating signal is associated to one of the different phases, for selecting for each pulse of the first sequence of pulses a pulse of the respective sequence of pulses which sequence of pulses has a phase associated to a current value of the modulating signal, and for outputting the selected pulse as part of a pulse position modulated sequence of pulses. The invention relates equally to a modulating system comprising such a phase modulator and to a corresponding method.
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A. Jayaraman et al., “Linear High-Efficiency Microwave Power Amplifiers Using Bandpass Delta-Sigma Modulators,” IEEE Microwave and Guided Wave Letters, vol. 8, No. 3, Mar. 1998, pp. 121-123.
Fressola Alfred A.
Kinkead Arnold
Nokia Corporation
Ware Fressola Van Der Sluys & Adolphson LLP
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