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).

Другие товары поставщика

	Thick-Copper PCB	Thick-Copper PCB With the highly development of telecommunications and electronics industry, thick copper boardis widely required by PCB customer. ...
	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 ...
	High-TG PCB	High-TG PCBHigh Temperature PCB fr4 Material The Glass Transition Temperature (Tg) is one of the most important properties of any epoxy and is the ...
	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...
	Standard PCB	Standard PCB servicerefers to full feature printed circuit board manufacturing service. With years' experience in pcb fabrication company, we have ...

Похожие товары

	Electric Ebike Components & Parts	Продавец: Hangzhou Lantu Technology Co.,Ltd	Looking for premium quality spare parts for your electric bike? Look no further than Lantu Ebike....
	Electric Bike Motor	Продавец: Hangzhou Lantu Technology Co.,Ltd	This electric bike 750w hub motor, compatible with disc brakes, is rated at 1000W with a reductio...
	Electric Bike Battery	Продавец: Hangzhou Lantu Technology Co.,Ltd	The electric cycle removable batterycomes with a mounting plate that attaches to most water bottl...
	Electric Bike	Продавец: Hangzhou Lantu Technology Co.,Ltd	After 14 years of intensive cultivation, customers are absolutely assured of the quality of Lantu...
	EEC Electric Scooter	Продавец: Hangzhou Lantu Technology Co.,Ltd	Revenge, our best-selling EEC electric scooter with EEC/COC certified and a maximum speed of 45km...