Taconic PCB is a high-end circuit board. This kind of PCB is often used in high-frequency and radio-frequency areas. Taconic printed circuit boards come from Taconic, a famous material company in the United States. The company’s PTFE copper-clad plate output is the largest in the world. In addition, it also has a lot of PTFE patents. In this respect, the technical strength of materials has always been at the top level in the world. There is a comprehensive understanding of Taconic PCB Design.
Taconic PCB design refers to using Taconic’s high-frequency laminates and substrates in PCB manufacturing according to specific requirements. Taconic specialises in providing advanced materials with low dielectric constant and low loss characteristics, which are commonly used in high-speed and radio frequency (RF) fields. Taconic PCB materials provide superior thermal stability and excellent size control, which are important for electronic circuits in some critical systems. Due to their superior performance, these materials are commonly used in industries such as telecommunications, aerospace, and defence. The Taconic PCB design process includes selecting suitable Taconic PCB materials, circuit design, and manufacturing.
Taconic PCB materials are mainly used on RF, high-frequency, and high-speed boards.
Considering the particularity of printed circuits designed by Taconic material, the circuit model of the PCB transmission line is mainly considered. Since the transmission line adopts a lumped parameter circuit model and a distributed parameter circuit model, the boundary can be regarded as l/ λ≥ 0.05. (where l is the geometric length; λ Is the working wavelength). Therefore, this specification defines the RF link as an analog signal circuit whose transmission line structure adopts the distributed parameter model.
The length of a PCB line rarely exceeds 50cm, so the analog signal of 30MHz frequency can be considered at least; Since more than 3G is generally viewed as pure microwave, it can be regarded as the end; Considering that the spacing of production process elements can reach 0.5mm, the maximum frequency can also be set at 30GHz, which is of little significance.
To sum up, the RF PCB can be defined as a PCB with signals in 30MHz to 6GHz. Still, the specific use of lumped or distributed parameter models can be determined according to the formula. Because the dielectric constant of the substrate is relatively high, the propagation speed of the electromagnetic wave is relatively slow. Therefore, the wavelength is higher than that in the air.
According to the microwave principle, the requirements of the microstrip line on the dielectric substrate: are low dielectric loss, constant dielectric constant within the required frequency and temperature range, high thermal conductivity and surface finish, good adhesion to the conductor, etc. Requirements for metal materials forming conductor strips: high conductivity, low resistance temperature coefficient, good adhesion to the substrate, easy welding, etc.
It refers to its nominal thickness (the thickness of the insulation layer plus the finished copper foil).
The thickness of Taconic PCB is usually an integral multiple of 0.2mm, such as 0.8mm, 1.0mm, 1.6mm, etc. Sometimes the thickness of the printed circuit board is also expressed in inches. The specific thickness shall be subject to the results calculated by impedance control.
PCB copper foil thickness refers to the thickness of the finished product, which should be marked on the drawing. RF board requires copper foil to be uniform and thin. The resistance temperature coefficient of uniform copper foil is consistent, and the signal transmission loss is minor.
The accuracy of characteristic impedance should be
