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Analog Baseband Circuit

A technology for simulating baseband circuits and simulating basebands, which is applied to baseband system parts and components, and can solve problems such as high power consumption and complex structure of analog baseband circuits

Active Publication Date: 2016-12-28
SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In view of this, the present invention provides an analog baseband circuit to solve technical problems such as complex structure and high power consumption of the existing analog baseband circuit

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Embodiment Construction

[0031] In order to make the above-mentioned features and advantages of the present invention more comprehensible, exemplary embodiments are given below together with accompanying drawings and described in detail as follows.

[0032]The existing analog baseband circuit uses an analog-to-digital converter (ADC) to realize analog-to-digital conversion. It has a complex structure and powerful functions, and can meet the application requirements of high data rate (such as 100Mbps) and high precision (such as 10bits). For wireless sensor networks, its data rate is usually in the order of 1Mbps, therefore, it is not necessary to carry out analog-to-digital conversion through a very complicated ADC. For this reason, the present invention fully considers the above problems, and redesigns the analog baseband circuit. Using the threshold comparator to convert the analog signal into a digital signal reduces the complexity of the circuit, and the obtained digital signal is more concise, so ...

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Abstract

The present invention discloses an analog baseband circuit, comprising: a low-pass filter with double conversion and single conversion, which receives an analog baseband signal, and filters out the part of the analog baseband signal whose frequency is higher than the baseband, and simultaneously converts the analog baseband signal by two The signal is converted into a single signal; the passive high-pass filter receives the single-channel signal obtained by the double-to-single low-pass filter, and filters out the part whose frequency is lower than the baseband; the threshold comparator receives the signal through the passive The signal obtained by the high-pass filter is compared with a preset threshold voltage to convert the analog baseband signal into a digital signal; the output buffer is used to shape the digital signal obtained by the threshold comparator and output it. The above analog baseband circuit fully considers the characteristics of low data rate and low precision in wireless sensor network applications, and uses threshold comparators instead of traditional analog-to-digital converters to convert analog signals into digital signals, thereby greatly reducing the complexity of the circuit , reducing the number of power consumption components, thereby reducing the power consumption of the circuit.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to an analog baseband circuit applied to a wireless sensor network. Background technique [0002] Wireless sensor network is a comprehensive intelligent information system integrating information collection, information transmission and information processing. It has a very broad application prospect. Its development and application will have a profound impact on various fields of human life and production. Wireless sensor network is an emerging cutting-edge research hotspot with a high degree of cross-discipline. It can monitor, perceive and collect information of various environments and monitoring objects in real time through various integrated micro-sensors, and process the collected information. After that, it is sent to end users through wireless communication, truly realizing the interaction and integration of the physical environment, the information world, and h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02
Inventor 李琛王勇温建新陶金龙
Owner SHANGHAI INTEGRATED CIRCUIT RES & DEV CENT