Individual dc and ac current shunting in optical receivers
US-2018278339-A1 · Sep 27, 2018 · US
RF power amplifier and operating method thereof
US8970299B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8970299-B2 |
| Application number | US-201213705328-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 5, 2012 |
| Priority date | Dec 20, 2011 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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- Title
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Abstract
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The present invention reduces the size of a power detection circuit. An RF power amplifier includes an RF amplifier circuit and a power detection circuit. The RF amplifier circuit subjects an RF input signal having a predetermined frequency band to power amplification and generates an RF amplifier output signal. The input terminal of the power detection circuit is coupled to the output of the RF amplifier circuit. The power detection circuit detects a harmonic component having a harmonic frequency that is a whole number multiple of the frequency of a fundamental wave component of the RF amplifier output signal, and generates at an output terminal a detected signal indicative of the signal level of the fundamental wave component of the RF amplifier output signal. The power detection circuit includes an input circuit, which detects the harmonic component, and an output circuit, which generates the detected signal at the output.
First claim
Opening claim text (preview).
What is claimed is: 1. An RF power amplifier comprising: an RF amplifier circuit; and a power detection circuit, wherein, when an RF input signal having a predetermined frequency band is supplied to an input terminal of the RF amplifier circuit, the RF amplifier circuit subjects the RF input signal to power amplification and generates an RF amplifier output signal having the predetermined frequency band from an output terminal of the RF amplifier circuit, wherein an input te…
Assignees
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Electricity · mapped topic
Electricity · mapped topic
- H03F1/00Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8970299B2 cover?
- The present invention reduces the size of a power detection circuit. An RF power amplifier includes an RF amplifier circuit and a power detection circuit. The RF amplifier circuit subjects an RF input signal having a predetermined frequency band to power amplification and generates an RF amplifier output signal. The input terminal of the power detection circuit is coupled to the output of the R…
- Who is the assignee on this patent?
- Renesas Electronics Corp
- What technology area does this patent fall under?
- Primary CPC classification H03F1/00. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 03 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).