Patent ID: 7551684

Claim:
A wireless communication system using a single trace for transmitting signals comprising: an antenna for generating radio frequency (RF) signals; a receiving module having a signal generator for generating control signals; a power source for generating direct current (DC) signals for supplying power to the antenna and the receiving module; and a power control hub coupled to the antenna, the receiving module and the power source, the power control hub comprising: an amplifier comprising: a first end coupled to the signal generator of the receiving module for receiving the control signals generated by the signal generator; a second end coupled to the power source; and an output end for outputting first output signals generated by amplifying the control signals; a rectifier comprising: a first end coupled to the output end of the amplifier; a second end coupled to the power source; and an output end for outputting second output signals generated by adjusting DC levels of the first output signals received from the output end of the amplifier; and a switch comprising: a first end coupled to the power source; a second end coupled to the antenna; and a control end coupled to the output end of the rectifier for electrically connecting or disconnecting the first and second ends of the switch based on the second output signals received from the output end of the rectifier.