A signal processing system and method with adjustable multi-channel bandwidth and gain

A signal processing and signal technology, applied in the electronic field, can solve the problem that the analog modulation of microwave signal gain and bandwidth cannot change the capacitance value, etc., and achieve the effect of multi-bandwidth selection, low noise, and improved link signal-to-noise ratio and sensitivity
CN110830066BActive Publication Date: 2020-12-08HUAZHONG UNIV OF SCI & TECH
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2020-12-08

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a multi-channel bandwidth and gain adjustable signal processing system and method, and belongs to the technical field of electronics. The system comprises a low-pass module which is used for the low-pass filtering of a microwave voltage signal; a control module which performs channel gating on a first analog switch chip signal according to an upper computer signal and a '1'or '0' signal transmitted by a voltage comparator, and selects different to-ground resistances of an adjustable gain amplifier; the adjustable gain amplifier which amplifies the microwave voltage signal after gain and bandwidth selection and transmits an output voltage signal to the voltage comparator; and the voltage comparator which is used for judging whether the output voltage signal reachesa reference level or not, outputting the '1' signal to the control module if the output voltage signal reaches the reference level, and outputting the '0' signal if the output voltage signal does notreach the reference level. According to the present invention, the gain and the bandwidth are independently adjusted, the dynamic range of a microwave receiver is wider, and the signal stability is not influenced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of electronic technology, and more specifically relates to a signal processing system and method with adjustable multi-channel bandwidth and gain. Background technique

[0002] In the receiver, the adjustable gain circuit is widely used, which makes it possible to debug the signal with a large dynamic range. At the same time, the appearance of the adjustable bandwidth circuit greatly reduces the noise floor of the receiver, making it possible to develop a high signal-to-noise ratio receiver.

[0003] At present, gain and bandwidth adjustable circuits are divided into two types: analog modulation and digital modulation. Digital modulation mainly uses the digital potentiometer to change the resistance value and cooperate with the operational amplifier to change the gain. At the same time, the resistance value in the resistance-capacitance filter circuit can also be changed to control the bandwidth. The advantage is that...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More