The coaxial cavity filter is the most widely utilized in RF and Microwave solution systems. The coaxial cavity filter has the advantages of good electromagnetic shielding, compact structure, and low passband insertion loss. In the case of capacitive loading, the coaxial cavity filter can be made in a small volume and has the advantages of a high rectangular coefficient and high power capacity.
It is made of the cavity, resonator, tuning screw, connector, cover plate, and coupling line;
The ceramic dielectric filter has advantages in miniaturization, lightweight, low loss, temperature stability, and a lower budget.
The ceramic filter is made from lead zirconate titanate ceramic material. The ceramic material is made into a sheet, coated with silver on both sides as electrodes, and has a piezoelectric effect after dc high voltage polarization.
Compared the dielectric filter with the coaxial cavity filter, the dielectric filter has a small volume, poor performance, and working in low power, but the cavity filter has good performance, large volume, and higher price than the dielectric filter.
Both of them have their pros and cons, so normally which kind of filter is more fit for the solution is the key point. As the manufacturer of RF filters, Jingxin does design the coaxial cavity filter and dielectric filter, and especially tailors the ones according to the solution with competitive price.
Post time: Apr-26-2022
