SYSTEM FOR MONITORING AND CONTROLLING THE POWER OF A RADIO FREQUENCY (RF) SIGNAL IN A SHORT-RANGE RF TRANSMITTER
First Claim
1. A system for monitoring and controlling the power of a Radio Frequency (RF) signal in a short range RF transmitter, said RF transmitter comprising an RF signal generation unit for generating the RF signal, a power amplifier for amplifying the RF signal, and an antenna for radiating the amplified RF signal, said system comprising:
- an RF power monitoring unit for connecting to an output stage of at least one component of the transmitter, for monitoring a power of the RF signal and generating at least one alarm signal indicating a faulty condition when said power meets a predetermined alarm criterion revealing a failure of at least one of said RF signal-generation unit, said power amplifier and impedance-matching network; and
a control unit connected with an input to said RF monitoring unit and for connecting to an output to a control input of at least one component of said transmitter for modifying at least one operating parameter of at least one of the RF signal generation unit and the power amplifier in response to said alarm signal.
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Accused Products
Abstract
A system for monitoring and controlling the power of a Radio Frequency (RF) signal in a short-range RF transmitter. An RF signal-generation unit generates the RF signal. A power amplifier amplifies the RF signal. An impedance-matching network matches the output impedance of the power amplifier to input impedance of an antenna. One or more RF power monitors monitor the voltage amplitude of the RF signal at the output of at least one of the RF signal-generation unit, the power amplifier and the impedance-matching network. The one or more RF power monitors further generate at least one alarm signal, based on the voltage amplitude of the RF signal. A control unit modifies at least one operating parameter of at least one of the RF signal-generation unit and the power amplifier, based on the at least one alarm signal generated by the one or more RF power monitors.
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Citations
20 Claims
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1. A system for monitoring and controlling the power of a Radio Frequency (RF) signal in a short range RF transmitter, said RF transmitter comprising an RF signal generation unit for generating the RF signal, a power amplifier for amplifying the RF signal, and an antenna for radiating the amplified RF signal, said system comprising:
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an RF power monitoring unit for connecting to an output stage of at least one component of the transmitter, for monitoring a power of the RF signal and generating at least one alarm signal indicating a faulty condition when said power meets a predetermined alarm criterion revealing a failure of at least one of said RF signal-generation unit, said power amplifier and impedance-matching network; and a control unit connected with an input to said RF monitoring unit and for connecting to an output to a control input of at least one component of said transmitter for modifying at least one operating parameter of at least one of the RF signal generation unit and the power amplifier in response to said alarm signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11, 15, 18, 19, 20)
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10. A short range communication unit, comprising:
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a source of data signals; a transmitter connected to said source of data, said RF transmitter comprising;
an RF signal generation unit for generating the RF signal based on said data signals;
a power amplifier for amplifying the RF signal; and
an antenna for radiating the amplified RF signal; andan RF power monitoring unit connected to an output stage of at least one component of the transmitter, for monitoring a power of the RF signal and generating at least one alarm signal indicating a faulty condition when said power meets a predetermined alarm criterion revealing a failure of at least one of said RF signal-generation unit, said power amplifier and impedance-matching network; and a control unit connected with an input to said RF monitoring unit and with an output to a control input of at least one component of said transmitter for modifying at least one operating parameter of at least one of the RF signal generation unit and the power amplifier in response to said alarm signal. - View Dependent Claims (12, 13, 14, 16, 17)
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Specification