Importance

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Abstract

An exemplary leakage tagging signal generator according to the present invention is intended for use in connection with a leakage tagging signal detector that detects signal leakage in a communication system. In particular, the leakage tagging signal generator is intended for use with a leakage tagging signal detector that identifies leakage tagging signals based on the detection of a characteristic leakage tagging frequency component. The leakage tagging signal generator includes an RF signal source, an output, a switch, and a pulse signal source. The RF signal source is operable to generate an RF carrier signal having a first frequency. The output connects to the communication system. The pulse signal source is a device operable to generate a pulse signal having a first state and a second state, said pulse signal having a pulse period. The pulse period of the pulse signal includes a first portion in which the pulse signal is in the first state and a second portion in which the pulse signal is in the second state. The pulse period futhermore corresponds to the characteristic tagging frequency. The switch is connected to the pulse signal source. The switch is operable to provide a first discrete signal level of the RF carrier signal to the output responsive to the pulse signal being in the first state, and to provide a second discrete level of the RF carrier signal to the output responsive to the pulse signal being in the second state, thereby producing a pulsed RF signal having the pulse period.

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First Claim