一、Characteristics

   The main function of the bandpass filter (passive filter) is to filter noise signals, useless signals, noise and specific signals to achieve the goal of filtering unnecessary signals and noise to improve the quality of reception. Bandpass filter has a good function of frequency selection and filtering in circuits and electronic high frequency systems, and can suppress unwanted signals and noise outside the frequency band. The characteristics of the bandpass filter are flexible design, easy to cascade, convenient welding, small standing wave, flexible adjustment plate, and avoid heavy adjustment work of on-board integrated devices.

      LC bandpass filter has the characteristics of short delivery time, good consistency, high reliability input/output 50Ω (or 75Ω, it must be specially noted) impedance matching, easy to use cascaded, flat in-band frequency characteristics, small insertion loss, high out-of-band inhibition, narrow transition frequency band, stable and reliable performance in the full temperature range of -55℃ ~ +85℃.

     LC bandpass filter can meet the continuous impact force of 30 grams in 11 milliseconds; It can meet the continuous vibration of 100 grams in the frequency of 5 ~ 500Hz. Limit parameters can be achieved: maximum input power: 1W; Operating temperature range: -55℃~+85℃; Storage temperature range: -65℃~+125℃.

二、Model & Electrical characteristics

三、Application & attention

     LC bandpass filters are widely used in electronic countermeasures, remote sensing, telemetry, civil aviation, airport tower, naval ships, microwave communication, subway communication, public security fire protection, mobile communication, satellite communication, medical equipment and other electronic equipment and communication systems. When in use, the input/output outlet can be used interchangeably, but it should be noted that the welding temperature should not be too high, the time should not be too long, the shell is well grounded, otherwise it will affect the out-of-band suppression and flatness index. 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. If reflow welding is used, the recommended melting point temperature of the solder is 180 ° C, and wave soldering is not recommended. Do not soak when cleaning, it is recommended to wipe with alcohol.

    The company has a variety of interface types of LC bandpass filters, a variety of international standards and a variety of fully sealed shell packaging forms for users to choose. Can be customized 3-7 order, 3dB bandwidth from 3% to 200%, frequency can be from 1MHz-3GHz LC bandpass filter, LC band-stop filter, LC low-pass filter, LC high-pass filter. It can be processed according to user needs or provided parameter requirements, and can also be customized according to user requirements and contour packaging requirements.

        This product is a highly customized device, and the indicators of microwave components are related to each other, so 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.