POWER AMPLIFICATION APPARATUS FOR MASSIVE MIMO BASE STATIONS
First Claim
Patent Images
1. A Multi-Input Multi-Output base station comprising:
- a plurality of transmitter blocks, each includinga time-domain base band signal source circuit configured to generate an output;
a low pass filter circuit coupled to the base band source circuit and configured to filter the output of the base band source circuit; and
a signal level adjuster circuit coupled to the base band signal source circuit and the low pass filter and configured to adjust the output of the base band signal source circuit based on an output of the low pass filter.
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Abstract
A Multi-Input Multi-Output base station includes a plurality of transmitter blocks. Each block includes a time-domain base band signal source circuit that generates an output, a low pass filter circuit coupled to the base band source circuit that filters the output of the base band source circuit, and a signal level adjuster circuit coupled to the base band signal source circuit and the low pass filter and that adjusts the output of the base band signal source circuit based on an output of the low pass filter.
9 Citations
16 Claims
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1. A Multi-Input Multi-Output base station comprising:
a plurality of transmitter blocks, each including a time-domain base band signal source circuit configured to generate an output; a low pass filter circuit coupled to the base band source circuit and configured to filter the output of the base band source circuit; and a signal level adjuster circuit coupled to the base band signal source circuit and the low pass filter and configured to adjust the output of the base band signal source circuit based on an output of the low pass filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16)
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12. A Multi-Input Multi-Output system, comprising:
circuitry configured to generate an output signal, low pass filter the output signal to generate a filtered output signal; and adjust the output signal based on the filtered output signal. - View Dependent Claims (13)
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14. A method for each of a plurality of transmitter blocks in a Multi-Input Multi-Output base station, comprising:
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generating, with circuitry, a reference voltage; generating, with the circuitry, a plurality of multiplier signals; and determining, with the circuitry, one of the plurality of multiplier signals with which to adjust the output signal based on the filtered output signal. - View Dependent Claims (15)
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Specification