Return Path Noise Reducing Amplifier with Bypass Signal

摘要

An amplifier system an amplified path and a bypass path for carrying an RF signal. A switch in the amplified system routes the RF signal through the amplified path in response to a normal condition in the amplifier system, and routes the RF signal through the bypass path in response to an abnormal condition in the amplifier system. The amplified path includes an amplified forward circuit and a return circuit. The amplified forward circuit has an amplifier, and the return circuit has a return amplifier and detection circuitry for providing power to the return amplifier. The detection circuity provides power to the return amplifier in response to a normal condition in the return circuit, and removes power from the return amplifier in response to an abnormal condition in the return circuit.

主权项

1. An amplifier system for communicating an RF signal, the system comprising:
an amplified path including an amplified forward circuit for communicating the RF signal downstream; a return path for communicating the RF signal upstream; a bypass path configured to communicate the RF signal upstream and downstream through the system; switching means coupled to the amplified, return, and bypass paths; wherein the switching means communicates the RF signal downstream through the amplified path in response to a normal condition in the amplified path, and communicates the RF signal through the bypass path in response to an abnormal condition in the amplified path; and the switching means provides power to the return path in response to a normal condition in the return path, and removes power from the return path in response to an abnormal condition in the return path.