Product Name: ROGERS RT6002 RF Board, 

with a dielectric thickness of 0.635mm, 

surface ENIG plating, high-frequency PCB board  high-frequency circuit board

High-frequency circuit boards are specially designed for electromagnetic frequencies that are relatively high.

 They are primarily used in high-frequency (frequencies exceeding 300MHz,

 corresponding to wavelengths less than 1 meter) and microwave (frequencies exceeding 3GHz,

 corresponding to wavelengths less than 0.1 meter) applications. 

These PCB boards are manufactured using standard rigid circuit board production processes or special processing techniques on microwave RF-grade copper-clad laminates. 

Generally, high-frequency boards can be defined as circuit boards with frequencies reaching or exceeding 1GHz.