Digital pre-distortion for multiple-power amplifier transceivers
US-2024429953-A1 · Dec 26, 2024 · US
Systems and methods for a radio frequency transmitter with improved linearity and power out utilizing pre-distortion and a GaN (gallium nitride) power amplifier device
US9065397B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9065397-B2 |
| Application number | US-201213348329-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 11, 2012 |
| Priority date | Jan 11, 2011 |
| Publication date | Jun 23, 2015 |
| Grant date | Jun 23, 2015 |
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Abstract
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Various embodiments provide for systems and methods for increased linear output power of a transmitter. An exemplary wireless communications system for transmitting an input signal comprises a predistorter module, a GaN power amplifier, a coupler, and an antenna. The predistorter module is configured to detect existing distortion by comparing the input signal to a feedback signal and generate a correction signal. The predistorter may adaptively adjust its operation to minimize the existing distortion due to GaN power amplifier nonlinear characteristics. The result is that the GaN power amplifier may send a power signal of improved linearity to the antenna. The coupler is configured to sample the amplified signal from the GaN power amplifier to generate the feedback signal. The antenna is configured to transmit the amplified signal.
First claim
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What is claimed is: 1. A wireless communications system for transmitting an input signal, comprising: an automatic gain adjuster (AGC) configured to adjust a gain of a feedback signal to generate a gain adjusted feedback signal; a predistorter module configured to: receive the gain adjusted feedback signal from the AGC; compare the gain adjusted feedback signal to an input signal to detect existing distortion in the gain adjusted feedback signal; and upon a determination th…
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Electricity · mapped topic
- H04B1/0475Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9065397B2 cover?
- Various embodiments provide for systems and methods for increased linear output power of a transmitter. An exemplary wireless communications system for transmitting an input signal comprises a predistorter module, a GaN power amplifier, a coupler, and an antenna. The predistorter module is configured to detect existing distortion by comparing the input signal to a feedback signal and generate a…
- Who is the assignee on this patent?
- Nath Jayesh, Shen Ying, Matsumoto Frank, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification H04B1/0475. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 23 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).