Absolute power detector
DCFirst Claim
Patent Images
1. A method of detecting the output power of a power amplifier comprising the steps of:
- sensing the magnitude of the voltage at the output of the power amplifier;
sensing the magnitude of the current at the output of the power amplifier; and
generating a signal using a summing element to combine a signal relating to the sensed voltage with a signal relating to the second current, wherein the generated signal is proportional to the output power of the power amplifier.
8 Assignments
Litigations
0 Petitions
Accused Products
Abstract
A method and apparatus is provided for detecting the output power of a power amplifier. The output power is detected by detecting the absolute values of the voltage and current at the output of the amplifier and mixing the detected voltage and current to generate a signal related to the output power.
113 Citations
31 Claims
-
1. A method of detecting the output power of a power amplifier comprising the steps of:
-
sensing the magnitude of the voltage at the output of the power amplifier;
sensing the magnitude of the current at the output of the power amplifier; and
generating a signal using a summing element to combine a signal relating to the sensed voltage with a signal relating to the second current, wherein the generated signal is proportional to the output power of the power amplifier. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method of controlling the output power of an RF power amplifier comprising the steps of:
-
generating a first signal that is proportional to the magnitude of the voltage at the output of the RF power amplifier;
generating a second signal that is proportional to the magnitude of the current at the output of the RF power amplifier;
generating a power control signal based on the first and second signals, wherein the power control signal is generated by connecting a first logarithmic amplifier to the first signal and a second logarithmic amplifier to the second signal and combining the outputs of the first and second logarithmic amplifiers; and
using the power control signal to control the output power of the RF power amplifier. - View Dependent Claims (8, 9, 10, 11, 12, 13)
-
-
14. A method of detecting the output power of a power amplifier comprising the steps of:
-
sensing the magnitude of the voltage at the output of the amplifier;
sensing the magnitude of the current at the output of the amplifier; and
determining the output power of the power amplifier by combining a signal relating to the sensed magnitude of the voltage with a signal relating to the sensed magnitude of the current, wherein the sensed signals are combined using a summing element. - View Dependent Claims (15, 16, 17, 18, 19)
-
-
20. A method of detecting the output power of a power amplifier comprising the steps of:
-
sensing the magnitude of the voltage at the output of the power amplifier;
sensing the magnitude of the current at the output of the power amplifier; and
generating a signal generated by combining the outputs of a first logarithmic amplifier that amplifies the sensed voltage and a second logarithmic amplifier that amplifies the sensed current, wherein the generated signal is proportional to the output power of the power amplifier. - View Dependent Claims (21, 22, 23, 24, 25)
-
-
26. A method of detecting the output power of a power amplifier comprising the steps of:
-
sensing the magnitude of the voltage at the output of the amplifier;
sensing the magnitude of the current at the output of the amplifier; and
determining the output power of the power amplifier based on the sensed magnitude of the voltage and the sensed magnitude of the current, wherein the output power is determined by combining the outputs of a first logarithmic amplifier that amplifies the sensed voltage and a second logarithmic amplifier that amplifies the sensed current. - View Dependent Claims (27, 28, 29, 30, 31)
-
Specification