Source: Web Authors: Chen Manshan, Yuan Yang The medical ultrasound diagnostic equipment refers to devices that utilize the properties of ultrasound to perform examination functions. Ultrasound is a mechanical wave with a vibration frequency >20kHz, which exceeds the upper limit of human hearing. The frequency range of ultrasound is from 2×10-2 to 2×100 Hz, while … Read more
One Background Introduction Human perception of the physical world has evolved from subjective feelings to sensors and then to sensor networks, as shown in Figure 1. As sensors become smaller and data collection becomes more widespread, a prominent issue has also emerged: the high deployment cost of sensing systems. Especially as the sensing range and … Read more
Click the blue“Radar Journal”to follow Video playback address on the computer (Radar Journal Bilibili Learning Platform): Short Video Paper | Low-Precision Quantization MIMO Radar Constant Modulus Waveform Design Method Based on ADPM Background Introduction To achieve excellent beamforming performance, MIMO radar systems typically configure a large number of active antenna units. However, using high-precision (over … Read more
❝ Introduction: This article presents a solution to implement the main functions of the 555 timer based on the DAC53701. The DAC53701 has significant advantages in signal precision. 01 DAC Replacing 555 1. Question about 555 Circuit Two days ago, I saw a student asking how to improve the precision of the square wave signal … Read more
Concepts, Production, and Applications of DAC and TCG Curves Concepts, Production, and Applications of DAC and TCG Curves 1 DAC/TCG Options 1.1 Concepts of DAC and TCG Curves 1.1.1 Definition and Function of DAC Curve Definition of DAC: DAC is a distance-amplitude curve. For the same equivalent defect, as the depth increases, the echo amplitude … Read more
Among all device characteristics, noise can be a particularly challenging and difficult design topic.This article mainly discusses the impact of clock noise on high-speed DAC phase noise. Sources of DAC Phase Noise For high-speed DACs, phase noise primarily comes from the following aspects: clock noise, power supply noise, as well as internal noise and interface … Read more
An Analog-to-Digital Converter (ADC) is primarily used to convert continuously transmitted analog signals into digital signals, facilitating rapid processing and analysis of transmitted information by digital systems (such as CPUs and MCUs). Generally speaking, the different quantization mechanisms of ADCs are one of the key factors determining the complexity and performance of ADC design, as … Read more
The purpose of this article is to introduce the theory and knowledge related to high-speed ADCs, detailing sampling theory, data sheet specifications, ADC selection criteria and evaluation methods, clock jitter, and other general system-level considerations. Additionally, some users hope to further enhance the performance of ADCs through techniques such as interleaving, averaging, or dithering. 1. … Read more
Click the above “Mechanical and Electronic Engineering Technology” to follow us A bus, known in English as “BUS”, is very much like a public bus. For instance, the route of a public bus is fixed, and anyone can take the bus to any stop along that route. If we compare people to electronic signals, this … Read more
Nowadays, infrared sensor technology has become very mature, integrating into people’s daily lives and playing a significant role. Before understanding infrared sensors, we should first understand what infrared rays, or infrared light, are. We know that light is a form of electromagnetic radiation, and based on human experience, the visible light spectrum ranges from 400nm … Read more