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RF Filters

AOI General Trading offers a range of three, four and five-stage bandpass ceramic microwave filters. The produced monolithic ceramic resonators provide the performance of microwave filters in a temperature range from -55 ° C to +85 ° C. The minimum level of insertion loss in the passband for the three-stage filters is not exceeding 1.5 dB

Three-stage bandpass ceramic microwave filters

Four-stage bandpass ceramic microwave filters

Five-stage bandpass ceramic microwave filters

Combo bandpass ceramic microwave filters

Quality control and acceptance of bandpass microwave filters is conducted in accordance with the requirements of All Union State standards 25360-82 and includes the following steps:

  •  Control of solderability after storage;
  •   Weight checking;
  •  Checking of electrical parameters;
  •  Test of strength when subjected to a sinusoidal vibration;
  •  Functional testing at elevated operating temperature (+85 ° C);
  •   Functional testing at a lower operating temperature (-55 ° C);
  •  Testing of the impact of changes in ambient temperature (-60 to +90 °C).

The area of application of the following bandpass microwave filters is home appliances, as well as terminal telecommunications devices of military and industrial applications with high demands on the fault-tolerance of electronic equipment.


It is possible to produce bandpass microwave filters according to the customer's technical specifications.

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