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Rf peak detection scheme using baseband circuits

A peak, detector technology, applied in the F receiver requires a new circuit design to reduce the peak detection, USING BASEBAND CIRCU, signal set field, can solve problems such as degraded RF receiver operation, degraded LNA, etc.

Active Publication Date: 2013-08-21
MARVELL ASIA PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The peak detector introduces a parasitic load on the LNA at critical nodes and thus tends to degrade the operation of the LNA and thus the operation of the RF receiver

Method used

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  • Rf peak detection scheme using baseband circuits
  • Rf peak detection scheme using baseband circuits
  • Rf peak detection scheme using baseband circuits

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Embodiment Construction

[0033]Embodiments described herein generally provide a radio frequency (RF) receiver, and more specifically, embodiments described herein provide an RF peak detector circuit and an RF peak detector that provide relatively low parasitic loading circuit method.

[0034] In the following description, for purposes of explanation, numerous examples and specific details are set forth in order to provide a thorough understanding of embodiments of the invention. Particular embodiments as defined by the claims may include some or all of the features only in these examples or in combination with other features described below, and may also include modifications and equivalents of the features and concepts described herein .

[0035] RF receivers are used to receive RF signals in a variety of devices including personal mobile devices such as mobile phones, personal digital assistants (PDAs), computers, tablet computers, radios, global positioning system (GPS) receivers, and the like. A...

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Abstract

A receiver includes an antenna configured to receive a set of RF signals, and a low-noise amplifier (LNA) coupled to the antenna and amplify the set of RF signals to generate a set of amplified signals. The receiver further includes a down-conversion mixer configured to down convert the set of amplified signals to baseband frequencies. The receiver further includes a low-pass filter configured to filter from the set of amplified signals to baseband frequencies an out-of-band signal. The receiver further includes a high-pass filter configured to reverse the filtering of the low-pass filter. The receiver further includes a peak detector configured to determine whether the LNA is operating at saturation; and an automatic-gain controller configured to decrease a gain of the LNA based on the determination of the peak detector.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit and priority of U.S. Provisional Patent Application No. 61 / 420,601, filed December 7, 2010, by Winoto et al., entitled "AN RF PEAK DETECTION SCHEME USING BASEBAND CIRCUITS," and is incorporated by reference in its entirety incorporated herein for various purposes. Background technique [0003] Embodiments described herein relate generally to radio frequency (RF) receivers, and more particularly, embodiments described herein relate to RF peak detector circuits and RF peak detector circuit methods. [0004] Unless otherwise indicated herein, the circuits and methods described in the Background section of this application are not prior art to the claims in this application and are not admitted to be prior art by inclusion in the Background section. [0005] RF receivers are used to receive RF signals in a variety of devices including personal mobile devices such as mobile phones, person...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/06
CPCH03G3/3068H04B17/21H04B1/10
Inventor R·威诺托J·朴
Owner MARVELL ASIA PTE LTD