In rapid PCB prototyping, Rogers PCB is a special circuit board with certain technical threshold, which is difficult to operate and high in cost. General PCB proofing factories are too troublesome to make, or because of the small number of customer orders, they don't want to do it or rarely do it.
Rogers PCB RO4350B material allows RF engineers to design circuits conveniently, such as network matching, impedance control of transmission lines, etc. Because of its low dielectric loss, RO4350B has more advantages than ordinary circuit borad materials in high frequency applications. The fluctuation of its dielectric constant with temperature is almost the lowest among similar materials. In a wide frequency range, its dielectric constant is quite stable, 3.48, and the recommended design value is 3.66. LoPra™ copper foil can reduce insertion loss. This makes the material suitable for broadband applications.
Rogers PCB RO4003 material can be removed with a traditional nylon brush. Before electroplating copper without electricity, no special treatment is needed. The board must be treated with traditional epoxy resin/glass process. Generally, it is not necessary to remove the drilling hole, because the high TG resin system (280°C+[536°F]]) is not easy to change color during the drilling process. If the stain is caused by aggressive drilling operation, the resin can be removed by standard CF4/O2 plasma cycle or double alkaline permanganate process.

1) After the iteration of the first four generations of communication technologies, the resources in the low frequency band have been occupied, and there are not many resources available for 5G development;
2) The higher the frequency, the more information can be loaded, the richer the resources, and thus the higher the transmission rate (for example, only five 20MHz channels can be divided in 100MHz, while 50 20MHz channels can be divided in 1GHz). Due to the resonance phenomenon caused by load and the influence of transmission line effect, the higher the frequency of electromagnetic wave, the more severe the attenuation will be. To realize efficient transmission at high frequency, it is necessary to control the loss of signals on the transceiver and transmission devices, and the corresponding bearing devices will be changed from ordinary plates in the past to high-frequency plates (such as Rogers PCB RO4350 material). Specifically, the terminal antenna originally used FPC (flexible printed circuit board) with PI as the main material, but due to the dielectric constant (Dk, The ability of medium to block electrons) and dielectric loss (Df, the ability of transmission medium to convert electric energy into heat energy) are both high, so the transmission efficiency is low. Therefore, the trend of replacing PI with liquid crystal polymer (LCP) with lower Dk and Df is becoming increasingly prominent. At present, LCP has been introduced into Apple mobile phones, and LCP materials are expected to become mainstream materials in the future. Taking Apple as an example, the single LCP module in iPhoneX is about 4-5 USD/antenna.