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RF Circuit Technology

RF Circuit Technology - Why are the applications of high-frequency circuit boards increasing?

RF Circuit Technology

RF Circuit Technology - Why are the applications of high-frequency circuit boards increasing?

Why are the applications of high-frequency circuit boards increasing?
2023-10-15
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Author:circuit board

High-frequency circuit board is a special type of circuit board, which is mainly used for high-frequency signal transmission and the application of high-frequency electronic devices. Compared with conventional circuit boards, high-frequency circuit boards have higher performance and stability to meet the requirements of high-frequency signal transmission.


With the development and construction of 5G communications, the electronic equipment industry has an increasing demand for high-frequency circuit boards. High-frequency circuit boards refer to special circuit boards with higher electromagnetic frequencies. They are used for high-frequency (frequency greater than 300MHZ or wavelength less than 1 meter) and microwave (frequency greater than 3GHZ or wavelength less than 0.1 meter) circuit boards, which use ordinary rigid circuits. Board manufacturing methods or circuit boards produced using special processing methods. Generally speaking, high-frequency circuit boards can be defined as circuit boards above 1GHz.


With the rapid development of science and technology, more and more equipment designs are used in the microwave frequency band (>1GHZ) and even the millimeter wave field (30GHZ), which also means that the frequency is getting higher and higher, and the requirements for circuit board substrates are getting higher and higher. Come higher and higher. For example, the substrate needs to have excellent electrical performance and good chemical stability. With the increase of power signal frequency, the signal loss on the substrate is required to be very small, which highlights the importance of high-frequency circuit boards.


In recent years, when we are doing circuit board processing for customers, we will find that more and more customer products use high-frequency circuit boards. Why do so many products use high-frequency circuit boards? What are the benefits of high frequency circuit boards?

millimeter wave radar PCB

millimeter wave radar PCB

As electronic product technology advances rapidly, traditional circuit boards are unable to meet component installation density and power requirements. But if high-density circuit board design concepts are adopted, electronic products can gain the following benefits:

1. The same product design can reduce the number of carrier board layers, increase density and reduce costs.

2. Add new wiring density and use micro-hole thin wires to increase the circuit capacity within the organization area, which can meet the assembly requirements of high-density contact components and facilitate the use of advanced structures.

3. The use of micro-hole interconnection can shorten the contact distance, reduce signal reflection, and crosstalk between lines. The components can have better electrical properties and signal accuracy.

4. The structure adopts thinner dielectric thickness and lower potential inductance.

5. Microholes have a low aspect ratio, and the signal transmission reliability is higher than ordinary through holes.

6. Microhole technology allows carrier board design to shorten the distance between grounding and signal layers, thereby improving radio frequency/electromagnetic wave/electrostatic discharge (RFI/EMI/ESD) interference. The number of grounding wires can be added to prevent components from being damaged by instantaneous discharge due to static electricity accumulation.

7. Micropores can improve the flexibility of circuit configuration and make circuit design easier.

8. Modern and popular electronic products must not only be mobile and power-saving, but also be easy to wear and beautiful in appearance. Of course, the most important thing is that they are affordable and can be replaced according to fashion.

9. In modern electronic products, more and more applications require high-frequency circuit boards to achieve high-speed signal transmission and processing.

10. High-frequency circuit boards are widely used in high-frequency applications such as communication equipment, radar systems, satellite communications, and wireless network equipment. For example, mobile phone baseband chips, antennas, high-speed radar systems, etc. all require high-frequency circuit boards to achieve high-speed signal transmission and computing.

High frequency PCB

High frequency PCB

High-frequency circuit boards have some special requirements in design and manufacturing compared with conventional circuit boards.

1. First of all, high-frequency circuit boards need to adopt a laminated board structure, which includes multiple signal layers and ground layers to provide better signal isolation and noise control.

2. High-frequency circuit boards require special wiring technology, such as microstrip lines and coaxial lines, to reduce signal loss and crosstalk. In addition, high-frequency circuit boards also require precise impedance control and size control to ensure stable signal transmission and matching.

3. The design and manufacturing of high-frequency circuit boards requires experienced engineers and high-precision equipment.

4. Circuit board manufacturing companies provide one-stop solutions, including circuit board design, lamination and manufacturing, to meet the needs of high-frequency electronic devices.

High-frequency circuit boards have higher performance and stability and can meet the needs of high-speed signal transmission and processing. In modern communication equipment, radar systems and wireless networks, the application and importance of high-frequency circuit boards are self-evident. By using special circuit board materials and manufacturing technology, high-frequency circuit boards can achieve stable transmission and matching of high-frequency signals, providing reliable support for high-frequency applications.