发明名称 |
PIXEL RECEIVER WITH LOW FREQUENCY NOISE REDUCTION FOR ULTRASONIC IMAGING APPARATUS |
摘要 |
Apparatus and method for generating a DC pixel voltage are disclosed. The apparatus includes an amplifier configured to amplify an input signal to generate a voltage signal, wherein the input signal is generated in response to an ultrasonic wave reflecting off an item-to-be-imaged and propagating via a piezoelectric layer; a noise reduction circuit configured to pass the voltage signal from an output of the amplifier to a node, while reducing a propagation of noise from the output of the amplifier to the node; and a circuit configured to generate a DC pixel voltage based on the reduced-noise voltage signal. |
申请公布号 |
US2017079624(A1) |
申请公布日期 |
2017.03.23 |
申请号 |
US201514857575 |
申请日期 |
2015.09.17 |
申请人 |
QUALCOMM Incorporated |
发明人 |
Wadhwa Sameer;Mathe Lennart Karl-Axel |
分类号 |
A61B8/08;A61B8/14;A61B8/00 |
主分类号 |
A61B8/08 |
代理机构 |
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代理人 |
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主权项 |
1. An apparatus, comprising:
an amplifier configured to amplify an input signal to generate a voltage signal, wherein the input signal is generated in response to an ultrasonic wave reflecting off an item-to-be-imaged and propagating via a piezoelectric layer; a noise reduction circuit configured to pass the voltage signal from an output of the amplifier to a node, while reducing a propagation of noise from the output of the amplifier to the node; and a circuit configured to generate a DC pixel voltage based on the voltage signal at the node. |
地址 |
San Diego CA US |