Wireless transceiver and method of operating the same

Details Wireless transceiver and method of operating the same Wireless transceiver and method of operating the same

2008-01-29

2008-01-29

Anderson, Matthew (Department: 2618)

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

C455S079000, C455S082000, C455S083000

Reexamination Certificate

active

07324790

ABSTRACT:
A transceiver400is provided in an ultrawide bandwidth device, which includes an antenna110, a transmitter circuit145, and a receiver circuit165. A transmitter amplifier440is provided between the antenna110and the transmitter circuit145, and is configured to have an operational transmitter output impedance when the transceiver400is in a transmit mode and an isolation transmitter output impedance when the transceiver400is in a receive mode. A receiver amplifier460is provided between the antenna110and the receiver circuit165, and is configured to have an operational receiver input impedance when the transceiver400is in a receive mode and an isolation receiver input impedance when the transceiver400is in a transmit mode. The isolation transmitter output impedance is greater than the operational receiver input impedance, and the isolation receiver input impedance is greater than the operational transmitter output impedance. Thus, a transmitter and receiver can be isolated without using a transmit/receive switch.

REFERENCES:
patent: 5457814 (1995-10-01), Myrskog et al.
patent: 6469582 (2002-10-01), Forbes
patent: 6510309 (2003-01-01), Thompson et al.

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