Efficient wideband phased antenna array using true time delays and interpolation

P.G.M. Baltus (Inventor), M. Matters - Kammerer (Inventor), A.M.J. Koonen (Inventor), B. Wang (Inventor)

Research output: PatentPatent publication

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Abstract

A wireless front-end includes a phased antenna array [400], a weighting factor computation circuit [434], and hybrid time delays including a set of variable true time delays [420,422] and a set of phase-shifting interpolators [418] that interpolate between the true time delays using weighting factors computed by the weighting factor computation circuit [434], where the weighting factor computation circuit uses non-orthogonal base vectors to compute the weighting factors. The phase-shifting interpolators [418] may be implemented using signal splitters [410], weighting multipliers [412], and signal combiners [414]. The weighting multipliers [412] may be implemented using variable gain amplifiers, variable attenuators, or switched resistor networks. The number of variable true time delays [420,422] is preferably less than half the number of antenna elements in the phased antenna array [400]. In the case were the phased antenna array is a linear array, the number of variable true time delays may be just one. In the case where the phased antenna array is a 2-dimensional array, the number of variable true time delays may be just two, but preferably three.
Original languageEnglish
Patent numberWO2018215647
Publication statusPublished - 29 Nov 2018

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Antenna phased arrays
Time delay
Interpolation
Networks (circuits)
Resistors
Antennas

Keywords

  • Millimeter-Wave
  • phased array
  • Wireless communication
  • interpolation
  • delay

Cite this

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title = "Efficient wideband phased antenna array using true time delays and interpolation",
abstract = "A wireless front-end includes a phased antenna array [400], a weighting factor computation circuit [434], and hybrid time delays including a set of variable true time delays [420,422] and a set of phase-shifting interpolators [418] that interpolate between the true time delays using weighting factors computed by the weighting factor computation circuit [434], where the weighting factor computation circuit uses non-orthogonal base vectors to compute the weighting factors. The phase-shifting interpolators [418] may be implemented using signal splitters [410], weighting multipliers [412], and signal combiners [414]. The weighting multipliers [412] may be implemented using variable gain amplifiers, variable attenuators, or switched resistor networks. The number of variable true time delays [420,422] is preferably less than half the number of antenna elements in the phased antenna array [400]. In the case were the phased antenna array is a linear array, the number of variable true time delays may be just one. In the case where the phased antenna array is a 2-dimensional array, the number of variable true time delays may be just two, but preferably three.",
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AU - Baltus, P.G.M.

AU - Matters - Kammerer, M.

AU - Koonen, A.M.J.

AU - Wang, B.

PY - 2018/11/29

Y1 - 2018/11/29

N2 - A wireless front-end includes a phased antenna array [400], a weighting factor computation circuit [434], and hybrid time delays including a set of variable true time delays [420,422] and a set of phase-shifting interpolators [418] that interpolate between the true time delays using weighting factors computed by the weighting factor computation circuit [434], where the weighting factor computation circuit uses non-orthogonal base vectors to compute the weighting factors. The phase-shifting interpolators [418] may be implemented using signal splitters [410], weighting multipliers [412], and signal combiners [414]. The weighting multipliers [412] may be implemented using variable gain amplifiers, variable attenuators, or switched resistor networks. The number of variable true time delays [420,422] is preferably less than half the number of antenna elements in the phased antenna array [400]. In the case were the phased antenna array is a linear array, the number of variable true time delays may be just one. In the case where the phased antenna array is a 2-dimensional array, the number of variable true time delays may be just two, but preferably three.

AB - A wireless front-end includes a phased antenna array [400], a weighting factor computation circuit [434], and hybrid time delays including a set of variable true time delays [420,422] and a set of phase-shifting interpolators [418] that interpolate between the true time delays using weighting factors computed by the weighting factor computation circuit [434], where the weighting factor computation circuit uses non-orthogonal base vectors to compute the weighting factors. The phase-shifting interpolators [418] may be implemented using signal splitters [410], weighting multipliers [412], and signal combiners [414]. The weighting multipliers [412] may be implemented using variable gain amplifiers, variable attenuators, or switched resistor networks. The number of variable true time delays [420,422] is preferably less than half the number of antenna elements in the phased antenna array [400]. In the case were the phased antenna array is a linear array, the number of variable true time delays may be just one. In the case where the phased antenna array is a 2-dimensional array, the number of variable true time delays may be just two, but preferably three.

KW - Millimeter-Wave

KW - phased array

KW - Wireless communication

KW - interpolation

KW - delay

M3 - Patent publication

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