High Frequency PCB

High Frequency PCB

What is High Frequency (HF) PCB?

Electronic devices with high frequency is the developing tendency nowadays, especially in wireless network. Satellite communication growing rapidly, information products move towards high speed and high frequency. Thus developing new products always need to use high frequency substrate, satellite system, mobile tele receiving base station and so on, these communication products must use high frequency PCB.

The features of Thick Copper PCB.

DK should be small and stable enough, usually the smaller the better, high DK may lead to signal transmission delay.

DF should be small, which mainly affect quality of signal transmission, the smaller DF could make smaller signal wastage accordingly.

The thermal expansivity should be the same with copper foil as much as possible, because the difference will lead to copper foil separated in the changes of cold and heat.

Water absorptivity must be low, high water absorptivity will affect DK and DF when in the wet environment.

Heat resisting property, chemistry resisting, impact endurance, peel off resisting must be good.

Materials used for HF circuit board.

High-frequency boardfor wireless applications and data rates in the upper GHz range have special demands on the material used:

Adapted permittivity.

Low attenuation for efficient signal transmission.

Homogeneous construction with low tolerances in insulation thickness and dielectric constant.

Generally speaking, high frequency can be defined as frequency above 1GHz. Currently, PTFE material is widely used in high frequency PCB Chinamanufacturing, it's also called Teflon, which frequency is normally above 5GHz. In addition, FR4 or PPO substrate can be used to the product frequency among 1GHz~10GHz. These three high frequency substrate have below differences:

With regard to laminate cost of FR4, PPO and Teflon, FR4 is the cheapest one, while Teflon is the most expensive one. In terms of DK, DF, water absorption and frequency feature, Teflon is the best. When product application require frequency above 10GHz, only can we choose Teflon PCB substrate to manufacture. Obviously, the performance of Teflon is far better than other substrate, However, Teflon substrate has the disadvantage of high cost and large heat resisting property. In order to improve PTFE stiffness and heat resisting property function, a large number of SiO2 or fiber glass as the filling material. On the other hand, due to molecule inertia of PTFE material, which it is not easy to combine with copper foil, thus, it needs to do special surface treatment on the combination side. With regard to combination surface treatment, normally use chemical etching on PTFE surface or plasma etching to plus surface roughness or add one adhesive film between PTFE and copper foil, but these may have influence on dielectric performance.

Free PCB quotationis just a click away. Click below button to enter ourPCB PriceCalculator, fill out your custom PCB spec, and rough PCB price will show up in the right column automatically (shipping price will be given on order confirmation page).

Other supplier products

	Aluminum PCB	Aluminum PCB Aluminum PCBAdvanced Circuits Specification Aluminum Printed Circuit Boards Contain a Thin Layer of Thermally Conductive Dielectric Ma...
	Flexible PCB	What is Flexible PCB? Flexible printed circuit boards, also called Flexible PCBs or Flex PCBs, derive their name for their ability to enable the ci...
	Prototype PCB	Prototype PCB For Prototype PCB, our ablility is from 1 to 10Layers, we are able to manufacture low volume single and double-sided PCBs to complex ...
	Standard PCB	Standard PCB servicerefers to full feature printed circuit board manufacturing service. With years' experience in pcb fabrication company, we have ...
	Laser Stencil	Apart from all types of Printed Circuit Boards(PCBs) such as Prototype PCB, Standard PCB, Aluminum PCB,HDI PCB, Flex PCB, Flex-Rigid PCB, High-Freq...

供应产品

Same products

	用于 FR4 / FPC 355nm 激光波长的大面积 PCB 分板机	卖方: 东莞市创威智能装备有限公司	这款激光分板机是一款功能强大且先进的 pcb 分板机、pcb 板切割机和 pcb 切割机。它旨在提供 FR4/FPC 材料的高深度切割、软件控制作和分板。该机器配备 10W/12W/15W/18...
	Lanrui G4 防爆分板工具 PCB 分离	卖方: 深圳维客修科技有限公司	产品描述 Lanrui G4 防爆拆板笔，强磁吸力，适用于分离 iPhone 手机主板，且不损坏手机。Lanrui 手机主板拆板笔配备可旋转强磁吸盘，可辅助拆卸各种双层主板，有效解决传统拆板方式...
	Professional PCB assembly manufacture for single side beauty mask PCB factory price PCBA service	卖方: Shenzhen STHL Electronics Co.,Ltd.	SERVICES:electronic material procurement, PCB production, PCBA assembly, cable assembly, finished...
	High quality PCBA service PCB Control Board for led driver and projector e-kit with Tin Plating Prototype PCBA service	卖方: Shenzhen STHL Electronics Co.,Ltd.	SERVICES:electronic material procurement, PCB production, PCBA assembly, cable assembly, finished...
	TSH-800 Crawler Mounted Water Well Drilling Rig	卖方: Jinzhou City TongShun Drilling Machine Co.,Ltd	Versatile Drilling Capability: Drilling diameter range 140-400mm. Enhanced Efficiency: Drilling ...