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US 7,733,814 B1Granted
Separation and combination of multiple channels in a bi-directional time-division communication system
AssigneeClear Wireless LLC
InventorsWalter F. Rausch, Harry W. Perlow
Life of this patent
Estimating the term…
Abstract
A time-division communication system wirelessly receives a communication signal during receive time periods and wirelessly transfers a communication signal during transmit time periods. These communication signals have multiple receive and transmit channels. The communication system circulates the received communication signal to various filters that pass particular receive channels and that reflect other receive channels back the circulator(s). Eventually, the reflected receive channels circulate to the appropriate filters and are passed. The filters also pass transmit channels to the circulator(s) where they are circulated and reflected until they combine into the transmit communication signal.
Claims20
A method of operating a time-division communication system that includes a first circulator having a first port, a second port, and a third port, the method comprising:
- in a receive time period, receiving a receive communication signal into the third port of the circulator, circulating the receive communication signal from the third port to the first port, transferring the receive communication signal from the first port to a first filter, transferring a first receive channel in the receive communication signal through the first filter for delivery to a first communication system, reflecting a second receive channel in the receive communication signal from the first filter to the first port, circulating the second receive channel from the first port to the second port, transferring the second receive channel from the second port for delivery to a second communication system;
- and
- in a transmit time period, transferring a first transmit channel received from the first communication system through the first filter to the first port, circulating the first transmit channel from the first port to the second port, transferring the first transmit channel from the second port and receiving the first transmit channel back into the second port, circulating the first transmit channel from the second port to the third port, receiving a second transmit channel into the second port, circulating the second transmit channel from the second port to the third port, and transmitting the first transmit channel and the second transmit channel from the third port to transmit a transmit communication signal from the first circulator.
A time-division communication system comprising:
- a circulator comprising a first port, a second port, and a third port;
- a first filter coupled to the first port;
- a second filter coupled to the second port;
- an antenna system coupled to the third port;
- a first communication system coupled to the first filter;
- a second communication system coupled to the second filter;
- and wherein
- during a receive time period:
- a receive communication signal is wirelessly received by the antenna system, transferred from the antenna system to the third port, circulated from the third port to the first port, and transferred from the first port to the first filter;
- a first receive channel in the receive communication signal is transferred through the first filter to the first communication system;
- and
- a second receive channel in the receive communication signal is reflected from the first filter to the first port, circulated from the first port to the second port, and transferred from the second port through the second filter to the second communication system;
- and wherein
- during a transmit time period:
- a first transmit channel is transferred from the first communication system through the first filter to the first port, circulated from the first port to the second port, transferred from the second port to the second filter, reflected from the second filter to the second port, circulated from the second port to the third port, and transmitted from the third port to the antenna system;
- a second transmit channel is transferred from the second communication system through the second filter to the second port, circulated from the second port to the third port, and transmitted from the third port to the antenna system;
- and
- a transmit communication signal comprising the first transmit channel and the second transmit channel is wirelessly transmitted from the antenna system.
15 more elements
A time-division communication system comprising:
- a first circulator comprising a first port, a second port, and a third port;
- a first filter coupled to the first port;
- a first communication system coupled to the first filter;
- an antenna system coupled to the third port;
- and wherein
- during a receive time period:
- a receive communication signal is wirelessly received by the antenna system, transferred from the antenna system to the third port, circulated from the third port to the first port, and transferred from the first port to the first filter;
- a first receive channel in the receive communication signal is transferred through the first filter to the first communication system;
- and
- a second receive channel in the receive communication signal is reflected from the first filter to the first port, circulated from the first port to the second port, and transferred from the second port for delivery to a second communication system;
- and wherein
- during a transmit time period:
- a first transmit channel is transferred from the first communication system through the first filter to the first port, circulated from the first port to the second port, transferred from the second port and received back into the second port, circulated from the second port to the third port, and transmitted from the third port to the antenna system;
- a second transmit channel is received into the second port, circulated from the second port to the third port, and transmitted from the third port to the antenna system;
- and
- a transmit communication signal comprising the first transmit channel and the second transmit channel is wirelessly transmitted from the antenna system.
13 more elements
Dependencies are inferred from the claim text.