High‑Frequency RF PCB Characteristics
High‑frequency RF PCB is manufactured with low‑Dk and low‑Df special substrates such as PTFE. It maintains stable dielectric performance under high‑frequency signal transmission and minimizes signal attenuation. This type of PCB is widely used for communication base stations, radar modules and RF sensor hardware with strict signal‑integrity requirements.
Surface Finish Options for PCB Manufacturing
Surface finish is the surface treatment layer on PCB pads to guarantee solderability and anti‑oxidation. Common choices include ENIG, lead‑free HASL, OSP, immersion silver and immersion tin. Different finishes fit diverse application scenarios: ENIG performs well for fine‑pitch SMT, OSP offers cost‑effective solutions for general‑purpose boards, while immersion silver suits high‑frequency circuit demands.
Controlled‑Impedance PCB Design
Controlled‑impedance PCB requires precise stack‑up, trace width and spacing calculation to achieve target single‑ended or differential impedance values. Strict impedance tolerance ensures signal integrity for high‑speed digital and radio‑frequency circuits. Impedance testing will be conducted during production to make sure finished boards match customer’s design specifications.
