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1. 发明申请

WO2008146256A3 INTEGRATED-CIRCUIT LOW-NOISE AMPLIFIER 审中-公开
标题翻译：集成电路低噪声放大器
公开(公告)号：WO2008146256A3
公开(公告)日：2009-01-29
申请号：PCT/IB2008052113
申请日：2008-05-30
申请人： KONINKL PHILIPS ELECTRONICS NV , HELVOORT MARINUS JOHANNES ADRI , HAANS PAULUS CORNELIUS HENDRIK , DE VREEDE LEO
发明人： HELVOORT MARINUS JOHANNES ADRI , HAANS PAULUS CORNELIUS HENDRIK , DE VREEDE LEO
IPC分类号： H03F3/189 , H03F3/68
CPC分类号： H03F3/189 , H03F3/68
摘要： It is proposed herein to improve the specifications of a low-noise amplifier (LNA) by integrating itin a chip. In order to cover a range of operating frequencies using a single chip, the integrated-circuit amplifier proposed herein comprises an input port configured to receive a magnetic resonance (MR) signal from a radio-frequency (RF) coil, one or more LNAs configured to amplify the received MR signal, and an output port configured to output the amplified MR signal from the oneor more LNAs. The operating frequencyofthe RF coil depends on the field strength, The matching circuit, if present, needs to be tuned to operate at the operating frequency of the RF coil, and depends on the component values in the loop, thus on loop size. In contrast, the proposed integrated-circuit amplifier is capable of directly connecting to RF coils with different loop sizes, without the need for a matching circuit.
摘要翻译：本文提出通过在芯片上集成来改进低噪声放大器（LNA）的规格。为了覆盖使用单个芯片的一系列工作频率，本文提出的集成电路放大器包括被配置为从射频（RF）线圈接收磁共振（MR）信号的输入端口，配置的一个或多个LNA 以放大所接收的MR信号，以及输出端口，被配置为从一个或多个LNA输出放大的MR信号。 RF线圈的工作频率取决于场强，匹配电路（如果存在）需要调谐以在RF线圈的工作频率下工作，并且取决于环路中的组件值，因此取决于环路尺寸。相比之下，所提出的集成电路放大器能够直接连接到具有不同环路尺寸的RF线圈，而不需要匹配电路。

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