一、Characteristics

      The working principle of dielectric filter (also known as ceramic filter) is based on the characteristics and resonance phenomenon of ceramic materials, through the selection of appropriate ceramic materials and the design of a reasonable resonator to filter specific signals. The function of the ceramic filter is to filter out the noise and let the useful signal pass through, so as to achieve the purpose of separating the current of different frequencies. Ceramic filter due to the material limit, the current frequency range of ceramic filter is roughly 300MHz-10GHz, ceramic filter is mainly used in frequency selection network, intermediate frequency tuning, frequency discrimination and filtering circuits.

     Ceramic filter has high inhibition, low insertion loss, high power, high Q value, good amplitude-frequency/phase-frequency characteristics, high signal-to-noise ratio, good thermal stability, low temperature coefficient, surface mount, small size, light weight, easy welding, input/output 50Ω impedance matching, easy to cascade use; The performance is stable and reliable in the full temperature range, and meets the requirements of military working environment (-55℃ ~ +85℃).

Dielectric filter

二、Model & electrical characteristics

三、Application & attention

       Ceramic filters are widely used in base stations, routers, drones, radars, T/R components, RF microwave, Wi-Fi, repeater, mobile communications and consumer electronics. When in use, pay attention to the grounding end is well grounded, otherwise it will affect out-of-band suppression and flatness indicators. The welding temperature should not be too high and the welding time should not be too long. If reflow welding is used, the recommended temperature is recommended, and wave soldering is not recommended. Products should be stored in the ambient temperature of -10℃~40℃, relative humidity is not more than 80%, the surrounding environment is not acidic, alkaline and other harmful gases in the warehouse. Do not soak when cleaning, it is recommended to wipe with alcohol.Ceramic filters are widely used in base stations, routers, drones, radars, T/R components, RF microwave, Wi-Fi, repeater, mobile communications and consumer electronics. When in use, pay attention to the grounding end is well grounded, otherwise it will affect out-of-band suppression and flatness indicators. The welding temperature should not be too high and the welding time should not be too long. If reflow welding is used, the recommended temperature is recommended, and wave soldering is not recommended. Products should be stored in the ambient temperature of -10℃~40℃, relative humidity is not more than 80%, the surrounding environment is not acidic, alkaline and other harmful gases in the warehouse. Do not soak when cleaning, it is recommended to wipe with alcohol. 

     The company has a variety of package types of media filters (ceramic filters) for users to choose, flexible design, support customization (input/output form and shape size can be designed according to user requirements). Custom ceramic high-pass filter, ceramic low-pass filter, ceramic band-stop filter, ceramic band-pass filter. Because the indicators of microwave components are related to each other and sound to each other, the user needs to clearly state the indicator requirements before customization. Once the product is made, it cannot be changed. If there are indicators that exceed the physical limit of the material itself, the best indicators can be achieved through negotiation between the two parties.