P/N 71053A-1 and 71053A-2 are fourth order dielectric-resonator filters employing a single cross-coupling for additional stopband attenuation characteristics. These filters employ a short, single-section evanescent mode filter to couple between the first resonator and the last resonator. The couplings between the other resonators are inductive irises, tuned but not resonated. The evanescent filter coupling between resonators (1) and (4) uses a re-entrant section of coaxial line to provide the capacitance required to resonate the equivalent shunt inductance of the below cutoff (evanescent mode) section of waveguide which is what the iris represents. The filter response is typical of the shaping possible with this latest RS Microwave patented (U.S. 5,220,300) technique. The units employ our proprietary resonator mounting method which essentially “vibration-proofs” the structure.

SPECIFICATIONS

P/N 71053A-1:      Center Frequency 3600 MHz

P/N 71053A-2:       Center Frequency 3550 MHz

Size:                           3.8 x 2.8 x 1.4 inches, plus connectors

Common to both units:

Minimum passband width:                                                         200 KHz

Maximum loss over 200 KHz bandwidth:                             8.0 dB

Maximum bandwidth for at least 18 dB attenuation:      2 MHz

Operating temperature range:                                               0 to 60 C

To order:  queries@.rsmicro.com.

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