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Circuit and Amplifier with Function of Eliminating Deterministic Noise

A technology of amplifiers and circuits, applied in the direction of power amplifiers, amplifiers with semiconductor devices/discharge tubes, amplifiers, etc.

Active Publication Date: 2019-04-26
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the echo is a noise component in the third signal, it is not random noise as far as the receiver is concerned

Method used

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  • Circuit and Amplifier with Function of Eliminating Deterministic Noise
  • Circuit and Amplifier with Function of Eliminating Deterministic Noise
  • Circuit and Amplifier with Function of Eliminating Deterministic Noise

Examples

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Embodiment Construction

[0050]The invention relates to an amplifier and a deterministic noise elimination method. Although embodiments of the invention have been described in the specification, it should be understood that the invention can be practiced in a variety of ways and is not limited to the following embodiments or to any particular manner or feature employed by these embodiments. In other embodiments, technical details known to those skilled in the art are omitted to avoid obscuring the present invention.

[0051] The terms of the present invention are described in an "engineering sense", for example, the term that the first quantity is "equal to" the second quantity means that the difference between the first quantity and the second quantity is less than a given tolerance. For example, if a given tolerance value is 0.5mV, 100.2mV can be described as equal to 100mV. Likewise, a "predetermined" physical quantity represents a physical quantity established by engineering means, and the physic...

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PUM

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Abstract

The present invention provides circuits and amplifiers with the function of eliminating deterministic noise. A circuit comprising a passive input network with an input impedance for coupling an input voltage to a first circuit node, an adjustable current source for outputting a manoeuvrably adjustable bias current to the first circuit node, A cascaded element controlled by a control voltage for receiving a total current flowing from the first circuit node and outputting an output current to a second circuit node, and a load network with a load impedance coupled to the first circuit node Two circuit nodes, wherein the maneuverably adjustable bias current is dynamically adjusted to track a determinable noise component in the input voltage.

Description

technical field [0001] The present invention relates to an amplifier, in particular to an amplifier capable of eliminating noise. Background technique [0002] Anyone with ordinary knowledge in the technical field of this case can understand the terms and related basic concepts of microelectronics disclosed in this case, such as "voltage", "current", "gain", "impedance", "circuit", "network ", "stacking", "current source", "signal", "P-channel MOS", "circuit node", "switch", "complementary", "resistor", "varistor" , "single-ended", "differential", "operational amplifier" and "boost gain", these terms and basic concepts are all known technical documents such as the textbook "Analog CMOS Integrated Circuit Design" (authored by Beh-Razavi ; McGraw-Hill Publishing; ISBN0-07-118839-8) etc. are commonly used, so no more details here. [0003] An amplifier is a widely used signal receiving device that can be used to receive an input voltage V I and output an output voltage Vo, w...

Claims

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Application Information

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IPC IPC(8): H03F1/26H03F3/24
CPCH03F1/26H03F3/24H03F1/0261H03F3/45179H03F2203/45306H03F2203/45334H03F2203/45356H03F2200/372H03G3/30
Inventor 林嘉亮
Owner REALTEK SEMICON CORP
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