MULTI-CHANNEL RADIO FREQUENCY FRONT END CIRCUIT
First Claim
1. A front end circuit for coupling antennas to a multi-channel time domain duplex radio frequency (RF) transceiver, the front end circuit comprising:
- a first channel module selectively connecting a first transmit line, a first primary receive line, and a first secondary receive line of the transceiver to the antennas; and
a second channel module selectively connecting a second transmit line, a second primary receive line, and a second secondary receive line of the transceiver to the antennas;
wherein the first channel module and the second channel module have independently controllable shared switching elements.
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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.
76 Citations
21 Claims
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1. A front end circuit for coupling antennas to a multi-channel time domain duplex radio frequency (RF) transceiver, the front end circuit comprising:
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a first channel module selectively connecting a first transmit line, a first primary receive line, and a first secondary receive line of the transceiver to the antennas; and a second channel module selectively connecting a second transmit line, a second primary receive line, and a second secondary receive line of the transceiver to the antennas; wherein the first channel module and the second channel module have independently controllable shared switching elements. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A front end circuit for coupling a plurality of antennas to a multi-channel time domain duplex RF transceiver, the front end circuit comprising:
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a first transmit port; first receive chain primary and secondary ports; a first antenna port connectible to a first one of the plurality of antennas; a second transmit port; second receive chain primary and secondary ports; a second antenna port connectible to a second one of the plurality of antennas; a first switch with terminals connected to the first transmit port, the first receive chain primary port and the second receive chain secondary port, and a common terminal connected to the first antenna port; and a second switch with 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. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An RF front end circuit for coupling a pair of antennas to a transceiver having a first operational channel and a second operational channel, each operational channel including a corresponding transmit line, primary receive line, and secondary receive line, the front end circuit compising:
a plurality of switching elements including; a first switching mode connecting a first one of the transmit lines to a first one of the antennas; a second switching mode connecting a second one of the transmit lines to a second one of the antennas; a third switching mode connecting a first one of the primary receive lines to the first one of the antennas and a first one of the secondary receive lines to the second one of the antennas; and a fourth switching mode connecting a second one of the primary receive lines to the first one of the antennas and a second one of secondary receive lines to the second one of the antennas. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
Specification