Apparatus for digital representation of angular difference

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12267081
APP PUB NO 20240039543A1
SERIAL NO

18256059

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Abstract

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An apparatus is disclosed for provision of an indication of an angular difference between first and second input signals. The apparatus comprises a phase frequency detector (PFD) configured to receive the first and second input signals and to provide first and second outputs based on the first and second input signals. A difference in pulse length between signals provided at the first and second outputs is indicative of the phase difference between the first and second input signals. The apparatus also comprises first and second time-to-digital converters (TDCs) each configured to receive one of the signals provided by the PFD and to provide a corresponding digital pulse length representation. Each of the TDCs is a pulse length modifying TDC, wherein pulse length modification may comprise pulse length shrinking or pulse length extension. The apparatus also comprises a comparator configured to provide the indication of the phase difference based on the digital pulse length representations provided by the first and second TDCs. Corresponding digital phase-locked loop (DPLL) and communication device are also disclosed.

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Patent Owner(s)

Patent OwnerAddress
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)STOCKHOLM SWE STOCKHOLM

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abdulaziz, Mohammed Lund, SE 18 6
Påhlsson, Tony Lund, SE 19 35
Sjöland, Henrik Lund, SE 95 469

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