MULTI-CHANNEL RADIO FREQUENCY FRONT END CIRCUIT WITH FULL RECEIVE DIVERSITY FOR MULTI-PATH MITIGATION
First Claim
1. A front end circuit for coupling a plurality of antennas to a multi-channel radio frequency (RF) transceiver, the front end circuit comprising:
- first and second transmit chains;
first and second power dividers;
first and second receive chains each including a first split and a second split interconnected to a common by a respective one of the first and second power dividers;
a first network selectively connecting a first one of the plurality of antennas to the first transmit chain and the first receive chain; and
a second network selectively connecting a second one of the plurality of antennas to the second transmit chain and the second receive chain.
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Accused Products
Abstract
A front end circuit for coupling a plurality of antennas to a multi-channel time domain duplex RF transceiver is disclosed. The front end circuit has a first transmit port, a first receive chain primary port, a first receive chain secondary ports, and a first antenna port connectible to a first one of the plurality of antennas. The front end circuit also has a second transmit port, a second receive chain primary port, and a second receive chain secondary port connectible to a second one of the plurality of antennas. A first switch has terminals connected to the first transmit port, the first receive chain primary port, and the second receive chain secondary port, as well as a common terminal that is connected to the first antenna port. Additionally, the front end circuit has a second switch that has terminals connected to the second transmit port, the second receive chain primary port and the first receive chain secondary port, and a common terminal connected to the second antenna port.
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Citations
30 Claims
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1. A front end circuit for coupling a plurality of antennas to a multi-channel radio frequency (RF) transceiver, the front end circuit comprising:
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first and second transmit chains; first and second power dividers; first and second receive chains each including a first split and a second split interconnected to a common by a respective one of the first and second power dividers; a first network selectively connecting a first one of the plurality of antennas to the first transmit chain and the first receive chain; and a second network selectively connecting a second one of the plurality of antennas to the second transmit chain and the second receive chain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 29, 30)
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23. An RF front end circuit for coupling antennas to a transceiver having a first operational channel and a second operational channel, each of the first and second operational channels including a transmit line, a first receive line and a second receive line, the front end circuit comprising:
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a first antenna chain and a second antenna chain each having; a transmit mode connecting the transmit line to a one of the antennas; a first receive mode connecting a one of the receive lines of one of the operational channels to the one of the antennas; a second receive mode connecting a one of the receive lines of a different one of the operational channels to the one of the antennas; and a third receive mode connecting the one of the receive lines of the one of the operational channels and the one of the receive lines of the different one of the operational channels to the one of the antennas; wherein the transmit modes of each antenna chain is exclusive of the receive modes of the corresponding antenna chain. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification