High-Frequency PCB Technical Capacity

High frequency PCBs are generally used in radar systems, satellites, antennas, communication systems, power amplifiers, radio frequency identification (RFID), airborne and ground radar systems, millimeter wave applications, missile guidance systems, space satellite transceivers, instruments, automotive ADAS systems, 5G equipment and other fields.
With the rapid development of science and technology, the functions of devices are becoming more and more complex, and many devices are designed in the microwave frequency band or even beyond the millimeter wave. This also means that the frequency is constantly increasing, and the requirements for the PCB substrate are getting higher and higher. As the frequency of the power supply signal increases, the loss of PCB materials is very small, so the importance of high-frequency PCB boards is highlighted.

The production process of high-frequency PCB is basically the same as that of FR-4 PCB. The key point to realize high-frequency PCB lies in the properties of raw materials, that is, the characteristic parameters of raw materials. The main material of high-frequency PCB board is high-frequency copper clad laminate, and its core requirements are to have low dielectric constant (DK) and low dielectric loss factor (DF). In addition to ensuring lower Dk and Df, the consistency of Dk parameters is also one of the important factors to measure the quality of the PCB board. In addition, another important parameter is the impedance characteristics of the PCB board and some other physical characteristics.

The dielectric constant (Dk) of the high-frequency PCB substrate must be small and stable. Generally speaking, the smaller the better, the signal transmission rate is inversely proportional to the square root of the dielectric constant of the material, and high dielectric constant can easily cause signal transmission delays. There are also some special applications that require high dielectric constant (DK), the DK value of high-frequency PCB is from 2-16-25 or higher.
The dielectric loss (Df) of high-frequency PCB substrate materials must be small, which mainly affects the quality of signal transmission. The smaller the dielectric loss, the smaller the signal loss.
The impedance of high-frequency PCB - actually refers to the parameters of resistance and reactance. Impedance control is the most basic principle of our high-speed design, because the PCB circuit needs to consider the installation of electronic components, and consider the conductivity and signal transmission performance after plugging. Therefore, the lower the impedance, the better, the PCB board manufacturer will guarantee a certain degree of impedance error during PCB processing.
High-frequency PCB substrates have low water absorption, and high water absorption will cause dielectric constant and dielectric loss when wet.

HHSD has a professional high-frequency PCB manufacturing team, we understand the characteristics of high-frequency PCBs, and know how to manufacture a qualified high-frequency PCB.

Tolerance control of RF circuits, HHSD's special control capability is ±0.02mm, Minimum line width/spacing is 3/3mil, We have carefully controlled the etching process of the circuit to eliminate the burrs caused by etching as much as possible, so that the PCB products are closer to the originals of the PCB designers.

Standard PCB

Standard PCB

Halogen-Free PCB(HF PCB)

Halogen-Free PCB(HF PCB)

Printed wire board

Printed wire board