Blog

——High-Efficiency Design Solving Thermal Challenges in RF Applications 1. Customer Challenge Application: 5G Base Station/Radar Power Amplifier Pain Points: Low Efficiency: Only 35% at 6GHz, causing excessive heat Unstable Performance: Return loss > -15dB, signal reflection issues Material Limitations: FR4-only PCB led to dielectric loss (Df > 0.02 @10GHz) 2. KKPCB Breakthrough Solution （1）Hybrid Material Stackup Rogers RO4350B (top/bottom)...

——12-Channel Isolation & High Reliability for Mission-Critical RF Systems 1. Customer Challenge Application: Military/5G Base Station SDR Backplane Critical Requirements: Support 12 independent RF channels without interference Achieve cross-channel isolation >65dB @2.4GHz Pass FCC Part 90 certification for industrial radio equipment Withstand harsh environments (85°C/85%RH for 1,000+ hours) 2. KKPCB’s Innovative Solution (1) Ultra-High Isolation Design EBG (Electromagnetic Bandgap) Structures:...

1. Background A European industrial automation customer was developing a power supply module for control systems, requiring high stability, conversion efficiency, and EMC compliance to ensure performance in demanding industrial environments. After evaluating several suppliers, the customer sought a reliable PCBA manufacturer with proven quality control and customization capabilities. 2. Application Scenario The power supply...

“Enabling Next-Gen LEO Satellite Communication with High-Performance RF PCBs” Project Overview Customer Background A leading European satellite technology provider (identity protected under NDA) required high-reliability PCBs for their next-generation low Earth orbit (LEO) communication terminals, targeting IoT and global broadband connectivity. The system demanded ultra-low-loss signal transmission at Ka-band (26.5-40GHz) to meet ITU-R S.465-6 radiation efficiency standards. Technical Challenges The customer’s existing FR-4 based RF...

1. Background Overview A European customer in the industrial automation sector required a high-performance and reliable industrial network router for device-to-device communication in their automated systems. The router needed to support high-speed data transfer, strong anti-interference capabilities, remote control functionality, and stable operation in harsh environments. The customer was looking for a supplier with expertise...

1. Background Overview In modern industrial automation systems, a stable and reliable power supply is critical for ensuring efficient equipment operation. A European client specializing in industrial-grade voltage regulators was seeking to enhance product performance in areas such as voltage stability, thermal control, communication reliability, and cost efficiency. They turned to KKPCB for a customized...

“Enabling Precise Beamforming with Industry-Leading Channel Isolation” Project Overview Customer Background A leading North American 5G infrastructure developer (confidential under NDA) required an advanced 16-transmit/16-receive (16T16R) Massive MIMO antenna array PCB for their next-generation 3.5GHz 5G macro base stations. The design faced critical inter-channel crosstalk issues degrading beamforming accuracy and 3GPP 38.104 compliance. Technical Challenges The customer’s initial 8-layer FR4-based PCB suffered: ? Excessive Crosstalk: -45dB channel...

“Reducing Weight by 40% While Maintaining Robustness for Harsh Environment Operations” Project Overview Customer Background A European UAV manufacturer specializing in industrial surveillance (identity protected) required a weight-optimized RF PCBA for their next-generation drone’s communication module, targeting multi-band operation (900MHz/2.4GHz/5.8GHz). The legacy design’s excessive weight (120g) limited flight time, while inadequate environmental protection caused failures in marine operations. Technical Challenges The...

1. Background Overview A European customer specializing in voltage regulators was seeking to integrate a new high-performance voltage sensor module into their next-generation products. The client faced challenges such as unstable temperature drift, inefficient component layout, and long delivery cycles. They were looking for a reliable manufacturing partner with strong customization capabilities and ultimately chose KKPCB for...

Client: A Leading European Industrial IoT Gateway Manufacturer (Confidential per NDA) Product: Model RX-4500 Edge Gateway (Deployed in Tropical & Coastal Environments) Pre-KKPCB Failure Analysis (2022 Data) Issue Field Data Lab Test Findings CAF-induced shorts 14% failure rate (12-month warranty period) IPC-J-STD-004 test: Dendrite growth at 500h (85°C/85%RH) Connector pad lift-off 8% of field returns Shear test: Pad adhesion...