A Broadband Analog Equalizer Integrated Circuit Based on Active Inductor

An active inductor, analog equalization technology, applied in the field of electronics, can solve problems such as difficult equalizer signal transmission, and achieve the effect of promoting high-frequency gain, increasing operating bandwidth, and enhancing high-frequency gain

Active Publication Date: 2021-06-01
福州奥斯雷特电子技术有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The traditional implementation method only compensates the high-frequency gain, but does not control the low-frequency gain, so it has certain limitations, and it is difficult to make the equalizer capable of signal transmission at a rate above 10Gbps

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  • A Broadband Analog Equalizer Integrated Circuit Based on Active Inductor
  • A Broadband Analog Equalizer Integrated Circuit Based on Active Inductor
  • A Broadband Analog Equalizer Integrated Circuit Based on Active Inductor

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Embodiment Construction

[0032] Such as figure 1Or shown in 2, the present invention discloses a kind of broadband analog equalizer integrated circuit based on active inductance, and it comprises main amplifier, auxiliary amplifier and low-pass filter amplifier, and main amplifier is the differential amplifier that adopts active inductance to do load, has The source inductance provides the zero point in the transmission equation, and the main amplifier is used as the main amplification channel to compensate the gain of the high-frequency signal; the auxiliary amplifier and the low-pass filter amplifier form a feedforward path, which is used to suppress high-frequency signals and amplify low frequency signal;

[0033] The main amplifier includes an active inductor, a current source and two transistors. The two input terminals of the analog signal are respectively connected to the two input terminals of the low-pass filter amplifier, and the two output terminals of the low-pass filter amplifier are conn...

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Abstract

The invention discloses a broadband analog equalizer integrated circuit based on an active inductance, which includes a main amplifier, an auxiliary amplifier and a low-pass filter amplifier, the main amplifier is a differential amplifier using an active inductance as a load, and the active inductance provides The zero point of the main amplifier is used as the main amplification channel to compensate the gain of the high-frequency signal; the auxiliary amplifier and the low-pass filter amplifier form a feedforward path, which is used to suppress high-frequency signals and amplify low-frequency signals. The equalizer of the invention adopts the active inductance as the load to enhance the high-frequency gain of the signal; adopts the feed-forward low-pass filter amplifier path to suppress the low-frequency gain of the signal, so the working bandwidth of the equalizer can be effectively improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an active inductance-based broadband analog equalizer integrated circuit. Background technique [0002] With the rapid development of modern information technology, people have higher and higher requirements for the speed of signal transmission, and the transmission of high-speed signals between electronic systems, between electronic modules, between circuit boards and between chips is becoming more and more frequent. However, since the attenuation of high-frequency signals on transmission cables, PCB boards, and even chip-level bonding wires is much greater than that of low-frequency signals, the signal components of different frequencies in the signal have different signal attenuation. The difference in attenuation between this high-frequency signal and low-frequency signal becomes more pronounced when the value is high. [0003] Traditional analog equalizer circuits usual...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03G3/30H03H11/28
CPCH03G3/3036H03H11/28
Inventor 黄果池
Owner 福州奥斯雷特电子技术有限公司
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