Back drilling process in PCB manufacturing: A key manufacturing technology for enhancing the integrity of high-speed signals. In the fields of high-speed digital circuits and RF microwave, the PCB back drilling process can significantly improve signal integrity by removing excess via stubs, making it an indispensable technology in modern electronic manufacturing. In modern electronic devices, especially in high-speed digital circuits and RF microwave fields, the signal integrity of printed circuit boards (PCBs) is crucial. Back drilling (Back…