Pulse or digital communications – Transmitters – Plural diversity
Reexamination Certificate
2006-05-12
2010-11-09
Payne, David C (Department: 2611)
Pulse or digital communications
Transmitters
Plural diversity
C375S347000, C375S327000, C342S081000, C342S150000, C342S352000, C342S354000, C342S377000, C455S003020, C455S550100, C455S553100
Reexamination Certificate
active
07830982
ABSTRACT:
An apparatus comprises a plurality of antenna elements, a plurality of digital signal processing devices for supplying phase-and-amplitude-weighted digital baseband signals, a beamforming processor for processing the weighted digital baseband signals to adaptively form a plurality of beam patterns for the antenna elements, a plurality of digital modulators for converting the digital baseband signals into intermediate frequency digital signals, and a modulator for modulating in-phase and quadrature components of the intermediate frequency digital signals to produce composite radio frequency output signals for the antenna elements. Receiving apparatus, and methods of transmitting and receiving a plurality of signals on a plurality of antenna elements are also provided.
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Guarino Rahel
Lenart, Esq. Robert P.
Northrop Grumman Systems Corporation
Payne David C
Pietragallo Gordon Alfano Bosick & Raspanti, LLP
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