Transmitter/receiver for use in multichannel time division duplexing system providing isolation between transmission channels and reception channels
First Claim
1. A transmitter/receiver for use in a multichannel time division duplexing system having a first transceiver and a second transceiver, and an antenna, said transmitter/receiver comprising:
- a combiner, operatively coupled to said first and second transceiver, for combining a first transmission signal generated by said first transceiver with a second transmission signal generated by said second transceiver;
a first circulator, operatively connected between said combiner and said antenna, for isolating said combined first and second transmission signal from a reception signal received through said antenna;
a divider, operatively coupled to said first circulator, for dividing said reception signal from said antenna into a first reception signal and a second reception signal;
a second circulator, operatively connected between said first transceiver and said divider, for isolating said first reception signal from said first transmission signal; and
a third circulator, operatively connected between said second transceiver and said divider, for isolating said second reception signal from said second transmission signal.
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Accused Products
Abstract
A transmitter/receiver for use in a multichannel time division duplexing system having an independent combiner and divider to isolate a transmission channel from a reception channel. The transmitter/receiver includes a first and second circulator connected, respectively, to a first and second transceiver. A transmission channel, formed between the first and second circulators and an antenna, transfers transmission signals from the first and second transceivers to the antenna in response to a transmission enable signal. A reception channel, formed between the first and second circulators and the antenna, transfers a reception signal from the antenna to the first and second transceiver in response to a reception enable signal. A switching control circuit is provided for generating the transmission enable signal during a transmission mode of operation and for generating the reception enable signal during a reception mode of operation.
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Citations
11 Claims
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1. A transmitter/receiver for use in a multichannel time division duplexing system having a first transceiver and a second transceiver, and an antenna, said transmitter/receiver comprising:
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a combiner, operatively coupled to said first and second transceiver, for combining a first transmission signal generated by said first transceiver with a second transmission signal generated by said second transceiver; a first circulator, operatively connected between said combiner and said antenna, for isolating said combined first and second transmission signal from a reception signal received through said antenna; a divider, operatively coupled to said first circulator, for dividing said reception signal from said antenna into a first reception signal and a second reception signal; a second circulator, operatively connected between said first transceiver and said divider, for isolating said first reception signal from said first transmission signal; and a third circulator, operatively connected between said second transceiver and said divider, for isolating said second reception signal from said second transmission signal. - View Dependent Claims (2, 3, 4)
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5. A transmitter/receiver for use in a multi channel time division duplexing system having a first transceiver and a second transceiver, and an antenna, said transmitter/receiver comprising:
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a first circulator, operatively coupled to said first transceiver, for isolating a first transmission signal generated by said first transceiver from a reception signal received through said antenna; a second circulator, operatively coupled to said second transceiver, for isolating a second transmission signal generated by said second transceiver from said reception signal received through said antenna; a transmission channel, operatively connected between said first and second circulators and said antenna, for transferring said first and second transmission signals to said antenna during a transmission mode of operation of said transmitter/receiver; a reception channel, operatively connected between said first and second circulators and said antenna, for transferring said reception signal received by said antenna to said first and second transceivers during a reception mode of operation of said transmitter/receiver; and a switching control circuit, operatively coupled to said transmission channel and said reception channel, for generating a transmission enable signal to enable said transmission channel during said transmission mode of operation, and for generating a reception enable signal to enable said reception channel during said reception mode of operation, whereby said transmission channel and said reception channel are isolated during said transmission and reception modes of operation. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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Specification