Bias current monitor and control mechanism for amplifiers
US-8970307-B2 · Mar 3, 2015 · US
Digital bias adjustment in a variable supply radio frequency power amplifier
US9136809B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9136809-B2 |
| Application number | US-201314091469-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 27, 2013 |
| Priority date | Nov 30, 2012 |
| Publication date | Sep 15, 2015 |
| Grant date | Sep 15, 2015 |
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Abstract
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An RF power amplifier operates over the range of supply voltages provided by a DC/DC converter whether the range of voltages is intentional or unintentional. A system for digitally adjusting the bias levels relative to the supply voltage includes at least one RF power amplifier stage, a digital control block, and a bias circuit. The RF power amplifier stage has at least one RF input signal, at least one RF output signal, and at least one bias input that controls its bias conditions. The RF Power Amplifier Stage includes one or more active gain elements used to amplify the RF input signals. The RF power amplifier operates in a number of bias states controlled by the digital control block. The digital control block uses information related to the supply voltage and may use other information stored in memory to select the desired bias.
First claim
Opening claim text (preview).
What is claimed is: 1. A radio frequency (RF) power amplifier comprising: an RF amplifier stage coupled to receive an RF input signal and supply an RF output signal, the RF amplifier stage including one or more active gain elements to amplify the RF input signal, the RF amplifier stage being further coupled to a variable supply voltage and to one or more bias signals to set a bias state for the RF amplifier stage; a bias circuit coupled to receive a control input specifying the…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9136809B2 cover?
- An RF power amplifier operates over the range of supply voltages provided by a DC/DC converter whether the range of voltages is intentional or unintentional. A system for digitally adjusting the bias levels relative to the supply voltage includes at least one RF power amplifier stage, a digital control block, and a bias circuit. The RF power amplifier stage has at least one RF input signal, at …
- Who is the assignee on this patent?
- Black Sand Technologies Inc, Qualcomm Inc
- What technology area does this patent fall under?
- Primary CPC classification H03F3/68. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 15 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).