Innovative Design and Wide Application of High-frequency Circuit Board Manufacturing
What Is High-frequency Circuit Board
A High-Frequency PCB (Printed Circuit Board) is a specialized type of PCB designed for applications that require high-speed signal transmission and low signal loss. These PCBs typically operate at frequencies above 500MHz, often reaching into the GHz range, making them essential for RF (Radio Frequency), microwave, and high-speed digital applications.
High-frequency PCB
Key Features of High-Frequency PCBs
● Low Dielectric Constant (Dk): Ensures signal integrity and minimizes transmission delays.
● Low Dissipation Factor (Df): Reduces signal loss during transmission.
● Controlled Impedance: Ensures stable and accurate signal propagation.
● Thermal Stability: Suitable for environments with high-temperature variations.
● High-Quality Copper Foil: Reduces surface roughness and enhances signal performance.
High frequency PCB Application Areas
High-frequency PCB plays a core role in many high-tech industries. Its low loss, high precision and strong stability make it a key foundation in many fields. SCSPCBA has complete high-frequency PCB manufacturing capabilities, providing precision impedance control, advanced testing solutions, and fast delivery, helping various industries achieve higher-performance electronic products.
1. Wireless Communication
The wireless communication industry has extremely stringent requirements for high-frequency PCBs, which are mainly used in core equipment such as 5G base stations, RF front-end modules, microwave antennas, power amplifiers, microwave circuits, and base station antennas.
High-frequency PCBs have low loss, precise impedance control, and high-temperature stability, ensuring high-frequency signals can operate stably in complex environments. With the development of 5G, Wi-Fi 6E, and millimeter-wave communications, high-frequency PCBs play a key role in miniaturization, high power, and high-speed data processing, providing technical support for global high-speed interconnection.
2. Automotive Electronics
Smart cars and autonomous driving technologies promote the widespread application of high-frequency PCBs in millimeter-wave radars, ADAS sensors, and high-speed data transmission systems. High-frequency PCBs use low-loss materials (Rogers, Taconic) and high-precision manufacturing processes to ensure the signal integrity of key equipment such as 77GHz millimeter-wave radars. In-vehicle 5G, V2X communications, etc., also rely on high-frequency PCBs for efficient signal processing. Their high temperature resistance, vibration resistance, and low signal attenuation make them an important part of the core electronic system of smart connected vehicles.
3. Medical Equipment
High-frequency PCB is used for high-speed signal transmission, low-noise amplification, and precise data acquisition in medical equipment such as MRI scanners, high-frequency detectors, and biosensors. Its low dielectric constant (Dk), low loss (Df), and anti-electromagnetic interference (EMI) characteristics ensure that medical imaging equipment provides high-precision imaging. Wearable biosensors and wireless medical monitoring equipment also rely on high-frequency PCB for stable signal transmission, making telemedicine and smart health monitoring possible, and improving the accuracy of diagnosis and treatment.
4. Industrial Control
In intelligent manufacturing, high-speed data acquisition, and automated control, high-frequency PCBs are responsible for data transmission and remote communication of industrial equipment. Applications such as factory automation, industrial robots, and PLC control systems require high-reliability, high-temperature, and chemical-resistant PCBs to adapt to harsh environments. Industrial Internet of Things (IIoT) and RFID reading devices also rely on high-frequency PCBs for high-speed signal processing to ensure the stability of large-scale data exchange and improve the operational efficiency and automation of smart factories.
5. Defense and Aviation
High-frequency PCB is the core component of radar, satellite communication, navigation system, and military electronic equipment, requiring extremely low signal loss, high heat resistance, and strong anti-interference ability. Military radar and aerospace navigation systems require high-frequency PCB for high-precision signal processing, long-distance data transmission, and anti-electromagnetic interference. High-frequency PCB has ultra-high reliability, extreme environment resistance (-55°C ~ 200°C), radiation resistance, and lightweight design support, ensuring the stable operation of defense and avionics equipment in complex battlefields and aerospace missions.
SCSPCBA’s High-Frequency Circuit Board Manufacturing Capabilities
| Manufacturing Capabilities | Specifications | ||
|---|---|---|---|
| RF PCB layer quantity | 2 to 24 | Minimum line width/line spacing | 2.5mil/2.5mil |
| High-frequency PCB types | 6GHz to 24GHz PCB, 70GHz PCB, embedded antenna PCB, ceramic high-frequency PCB, PTFE high-frequency PCB, Rogers PCB | Minimum aperture | 0.15mm |
| Finished PCB thickness | 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.6mm | Dielectric constant (Dk) | 2.2~3.5 (common high-frequency material range) |
| Base copper thickness | Normally 0.5oz and 1.0oz | Dissipation factor (Df) | 0.0009~0.005 |
| Conductor width control | ±0.02mm | Surface treatment | ENIG, OSP, LFHASL, gold plating, nickel-palladium-gold, etc. |
| Maximum impedance control tolerance | 2% | Impedance control accuracy | ±5% |
| PCB vias we can drill | Blind via, overlapping via, staggered via, skip via, buried via | High frequency test | Time domain reflection test (TDR), network analyzer test |
| Thermal stress | 10 seconds at 288°C | Inter-layer alignment accuracy | ±50μm |
| Hole wall copper thickness | ≥ 20μм | Surface finish | 0.1μm~0.4μm |
| Punching or routing tolerance | ±0.10mm to 0.13mm | Solder mask thickness on traces | 20μm to 30μm |
| Solder mask ink | Taiyo PSR4000, Tamura DSR2200 | High frequency test capability | TDR, VNA (vector network analyzer), thermal shock test, etc. |
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