Physical foam polyethylene coaxial cables shielding attenuation depends on the following factors:
1: Aluminum foil lap width of not less than 5mm.
2: Aluminum layer thickness is recommended to increase to 15μm or more, or even higher to 30μm.
3: reasonable arrangements attenuation, echo, shielding the relationship between the former and the latter two contradictory, in the attenuation of qualified conditions reasonable reduce the degree of foam, to improve the shielding effect and echo are beneficial.
4: aluminum foil quality is better, especially good flexibility, after a variety of bending without cracks.
5: Longitudinal bag weaving process to improve, so as not to fold the middle belt to form a gap or reduce the overlap width, causing leakage.
6: a reasonable density of weaving. High density has a little compensation for shielding, but if the weaving density is too high, in high frequency, large-density braided cable makes the "side frequency difference" increases, thus enlarging the compensation more difficult to have an impact on cable performance. General 40% can be.
7: The cable laying process to avoid strong holes in the slot or slot, the aluminum foil crack or fracture