Product/Service

Bandreject Filters

Source: Trilithic Inc.
Bandreject filters (or notches) are used to pass a large operating band of frequencies, while rejecting a narrow band of frequencies. This band of frequencies may have a 3 dB bandwidth as small as 0.5% or as large as 30 or 40%. The band reject filter is designed for each customer's specific frequency applications
Bandreject filters (or notches) are used to pass a large operating band of frequencies, while rejecting a narrow band of frequencies. This band of frequencies may have a 3 dB bandwidth as small as 0.5% or as large as 30 or 40%. The band reject filter is designed for each customer's specific frequency applications.

Trilithic provides bandreject filters in many configurations:

Lumped Component

Used for wider bandwidth notches - 10% to 30 or 40% - and for frequencies below 150 MHz.

Helical Resonator

Used for narrow bandwidth notches - 0.5% to 5% - and center frequencies of 30 to 400 MHz.

Coaxial Resonator

Used for narrow bandwidth applications - 0.5% to 5% - for center frequencies of 400 to 3,000 MHz.

In each of these configurations, certain electrical performances may be modified or improved. These may include insertion loss, VSWR, power handling, and/or extended passbands.

For other RF / Microwave Filters from Trilithic click on the links below.