Diversity receiver and transceiver
AssigneeFreescale Semiconductor, Inc.
InventorLaurent Gauthier
Life of this patent
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Abstract
A diversity receiver comprises a plurality of receiving paths connected to a receiver circuit. Each of the receiving paths comprises an antenna receiving a signal, connected to a matching network connected to a receive amplifier. The receiver circuit is connected to a signal level comparison circuit for providing a relative comparison value indicating one of the receiving paths receiving the signal with a relative maximum strength. The signal level comparison circuit comprises a comparator circuit connected to the receiver circuit receiving a currently received signal level, and to a logic control unit being arranged to select one of the receive paths to provide the currently received signal to the receiver circuit.
Claims14
A diversity receiver, comprising:
- a plurality of receiving paths connected to a receiver circuit, wherein
- each of said receiving paths comprises an antenna configured to receive a signal,
- each antenna is connected to a matching network
- each matching network is connected to a receive amplifier;
- and
- a signal level comparison circuit, coupled to the receiver circuit, and configured to provide a relative comparison value indicating one of said receiving paths receiving said signal with a relative maximum strength, said signal level comparison circuit comprising
- a comparator circuit connected to said receiver circuit and configured to receive a currently received signal level, and
- a logic control unit, coupled to the comparator circuit, configured to select one of said receive paths to provide said currently received signal to said receiver circuit.
A diversity transceiver, comprising:
- one receiver circuit;
- one transmit amplifier driver circuit;
- one phase-locked loop circuit;
- one logic control unit;
- and
- a plurality of antennas, matching networks, receive amplifiers and transmit amplifiers, wherein
- said plurality of antennas, matching networks and receive amplifiers are connected as a corresponding plurality of receive paths being connected to said receiver circuit, and
- said plurality of antennas, matching networks and transmit amplifiers are connected as a corresponding plurality of transmit paths being connected to said transmit amplifier driver circuit,
- said logic control unit is capable of activating in a receive mode one of said receive paths or sequentially activating two or more of said receive paths, and
- said logic control unit is capable of activating in a transmit mode one of said transmit paths or sequentially activating two or more of said transmit paths.
Dependencies are inferred from the claim text.