Telecommunications – Transmitter – Measuring – testing – or monitoring of transmitter
Reexamination Certificate
2007-06-05
2007-06-05
Urban, Edward F. (Department: 2618)
Telecommunications
Transmitter
Measuring, testing, or monitoring of transmitter
C455S126000, C455S127200
Reexamination Certificate
active
10443157
ABSTRACT:
A power detection circuit is described that provides for a wide dynamic range power detection. The circuit incorporates a coupler to sample a transmitted or received power. Such sampled power is then directed to a detector diode configured to generate a voltage from its rectified current. Such voltage after optional filtering and buffering is directed to multiple amplifiers wherein each amplifier has a distinct associated gain. For improved noise immunity, a differential output amplifier may be used. For low power levels, the output of an amplifier with a large gain is directed to an analog-to-digital converter (ADC), wherein the analog voltage is quantized into a digital value. As power is increased, the power of an amplifier stage with a small gain can then be directed to the ADC such that saturation of the ADC is avoided. Hysteresis is implemented so as to avoid undesirable and unnecessary rapid switching.
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Chao Yen-Feng
Nguyen Cuong
Harris Stratex Networks Operating Corporation
Jackson Blane J.
Sherry Leah
Thelen Reid Brown Raysman Millstein Felder & Steiner LLP
Urban Edward F.
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