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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 language | English |
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Patent number | WO2018215647 |
Publication status | Published - 29 Nov 2018 |
Keywords
- Millimeter-Wave
- phased array
- Wireless communication
- interpolation
- delay
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Dive into the research topics of 'Efficient wideband phased antenna array using true time delays and interpolation'. Together they form a unique fingerprint.Projects
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Zwaartekracht ECO Research Centre for Integrated Nanophotonics
Koonen, A. M. J., van Zantvoort, J. H. C., Smit, M., Cao, Z., van der Heide, S., Shi, B., Spiegelberg, M., Raz, O., Al-Daffaie, S., Mukit, M., Shi, B., Lei, Y. & Spiegelberg, M.
1/01/14 → 31/12/23
Project: Research direct