Signal amplifiers that switch to an attenuated or alternate communications path in response to a power interruption
First Claim
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1. A bi-directional RF signal amplifier, comprisingan RF input port;
- a switching device having an input that is coupled to the RF input port, a first output and a second output;
a diplexer having a common input, a high frequency output and a low frequency output, the common input coupled to both the first output of the switching device and the second output of the switching device;
an RF output port that is coupled to the high frequency output of the diplexer; and
an attenuator that is coupled between the second output of the switching device and the common input of the diplexer.
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Abstract
RF signal amplifiers are provided that include an RF input port, a switching device having an input that is coupled to the RF input port, a first output and a second output, a first diplexer having an input that is coupled to both the first output of the switching device and the second output of the switching device, and a first RF output port that is coupled to an output of the first diplexer. These amplifiers further include an attenuator that is coupled between the second output of the switching device and the input of the first diplexer.
18 Citations
15 Claims
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1. A bi-directional RF signal amplifier, comprising
an RF input port; -
a switching device having an input that is coupled to the RF input port, a first output and a second output; a diplexer having a common input, a high frequency output and a low frequency output, the common input coupled to both the first output of the switching device and the second output of the switching device; an RF output port that is coupled to the high frequency output of the diplexer; and an attenuator that is coupled between the second output of the switching device and the common input of the diplexer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An RF signal amplifier, comprising:
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a power regulation circuit that is configured to generate a power supply voltage in response to power received from an external source; an RF input port; a first RF output port; a second RF output port; a first communications path that extends between the RF input port and the first RF output port, the first communication path including a power amplifier that is configured to amplify downstream signals passing from the RF input port to the first RF output port; a second, non-interruptible communications path that extends between the RF input port and the second RF output port, wherein the second, non-interruptible communications path is configured to support both downstream and upstream RF communications even in the absence of power from the external source; a switching device that is configured to selectively switch a circuit element in series onto the first communications path in between the RF input port and an input to the power amplifier in response to a loss of power from the external source. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification