Invention Grant
- Patent Title: Array antenna system and spread spectrum beamformer method
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Application No.: US12253446Application Date: 2008-10-17
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Publication No.: US09966989B2Publication Date: 2018-05-08
- Inventor: Marcos Antonio Bergamo
- Applicant: Marcos Antonio Bergamo
- Applicant Address: US RI North Kingstown
- Assignee: Applied Radar, Inc.
- Current Assignee: Applied Radar, Inc.
- Current Assignee Address: US RI North Kingstown
- Agent Maurice M. Lynch
- Main IPC: H04B1/707
- IPC: H04B1/707 ; H04B7/06 ; H04B7/08 ; H04J13/00 ; H04J13/10

Abstract:
A method for receiving direct-sequence spread spectrum signals containing a plurality of codes with digital beamforming in a receive array apparatus composed of a plurality of spaced antenna elements coupled to at least one receiver with at least one low noise amplifier, at least one frequency down-converter and at least one analog-to-digital converter and at least one digital signal processing computer or device for said plurality of spaced antenna elements, the method comprising the steps of: receiving said direct-sequence spread spectrum signals in said receive array apparatus, the signals emanating from a plurality of positions or from one or multiple transmitters; multiplying said received signals at each element by a reflecting code to produce reflected signals hereinafter referred to as Element Reflected Signals; combining said Element Reflected Signals forming a common signal for the array; converting said common signal to a convenient intermediary frequency signal; sampling said intermediary frequency-converted signal using said analog-to-digital converter; correlating resulting samples against codes or variations of said codes included in said Element Reflected Signals; demultiplexing said Element Reflected Signals to corresponding signals as received by each of said different array antenna elements using said correlated samples.
Public/Granted literature
- US20090103593A1 Array Antenna System and Spread Spectrum Beamformer Method Public/Granted day:2009-04-23
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