Telecommunications – Receiver or analog modulated signal frequency converter – Plural receivers
Reexamination Certificate
2011-01-11
2011-01-11
Dao, Minh D (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Plural receivers
C455S146000, C455S147000, C455S084000, C455S426200
Reexamination Certificate
active
07869778
ABSTRACT:
A technique to share a local oscillator signal between two radio frequency integrated circuits (RFICs). The local oscillator signal generated internally by one RFIC is ported to the other RFIC for use in transmit or receive operation. The local oscillator signal that is ported may be an RF local oscillator signal. Each RFIC may include a bi-directional port circuit that can be operated to make the RFIC a master, slave or may be totally disabled to disable the porting feature. This is particularly useful in RFICs that are used to communicate using MIMO radio algorithms which rely for optimum performance on phase and frequency coherency among a plurality of transmitters and a plurality of receivers.
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Dao Minh D
IPR Licensing Inc.
Volpe and Koenig P.C.
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