US Patent 7324790 Wireless transceiver and method of operating the same
Patent 7324790 was granted and assigned to Freescale Semiconductor on January, 2008 by the United States Patent and Trademark Office.
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A transceiver 400 is provided in an ultrawide bandwidth device, which includes an antenna 110, a transmitter circuit 145, and a receiver circuit 165. A transmitter amplifier 440 is provided between the antenna 110 and the transmitter circuit 145, and is configured to have an operational transmitter output impedance when the transceiver 400 is in a transmit mode and an isolation transmitter output impedance when the transceiver 400 is in a receive mode. A receiver amplifier 460 is provided between the antenna 110 and the receiver circuit 165, and is configured to have an operational receiver input impedance when the transceiver 400 is in a receive mode and an isolation receiver input impedance when the transceiver 400 is 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.
US Patent 07324790 Wireless transceiver and method of operating the same US Patent 7324790 Wireless transceiver and method of operating the same
US Patent 07324790 Wireless transceiver and method of operating the same
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