Systems and methods of RF power transmission, modulation, and amplification, including embodiments for error correction
First Claim
1. A method for error correction, the method comprising:
- receiving, with a receiver, a radio frequency (RF) output signal from a multiple input single output (MISO) device;
scaling an amplitude of the RF output signal to generate a scaled analog signal;
sampling the scaled analog signal to generate a sampled representation of the scaled analog signal;
converting the sampled representation of the scaled analog signal to a digital signal;
calculating a delay between one or more input signals to the MISO device and the RF output signal from the MISO device based on the digital signal; and
adjusting one or more operational parameters of the MISO device based on the delay.
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Abstract
Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.
748 Citations
18 Claims
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1. A method for error correction, the method comprising:
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receiving, with a receiver, a radio frequency (RF) output signal from a multiple input single output (MISO) device; scaling an amplitude of the RF output signal to generate a scaled analog signal; sampling the scaled analog signal to generate a sampled representation of the scaled analog signal; converting the sampled representation of the scaled analog signal to a digital signal; calculating a delay between one or more input signals to the MISO device and the RF output signal from the MISO device based on the digital signal; and adjusting one or more operational parameters of the MISO device based on the delay. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10, 17)
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7. A system for error correction, the system comprising:
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a receiver configured to receive a radio frequency (RF) output signal from a multiple input single output (MISO) device; an automatic gain controller (AGC) configured to scale the RF output signal to generate a scaled analog signal; a sample-and-hold (S/H) circuit configured to sample the scaled analog signal to generate a sampled representation of the scaled analog signal; an analog-to-digital converter (ADC) configured to convert the sampled representation of the scaled analog signal from the S/H circuit to a digital signal; and a digital control module configured to; calculate a delay between one or more input signals to the MISO device and the RF output signal from the MISO device based on the digital signal; and adjust one or more operational parameters of the MISO device based on the delay. - View Dependent Claims (8, 11, 12, 13, 14, 15, 16, 18)
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Specification