Tunable Notch Filter Network

EM-7848 | 6.5 GHz – 10 GHz

The Electro-Metrics Model EM-7848 Tunable Notch Filter Network is a tunable cavity rejection filter operating from 6.5 to 10.0 GHz and used to perform specification compliance testing as stated in MIL-STD-462 and other related standards where attenuation is required at one selected frequency. The cavity exhibits very sharp resonances at the tuned frequency with low insertion loss and low skirt attenuation.

The EM-7848 has optimum performance when resonance in the TE₀₁₁ mode and can operate over a wide range of power levels. The cavity and associated tuning mechanism is constructed of copper, brass, and aluminum alloys.

Due to the precise nature of the cavity for operation in the designated frequency range, care should always be taken to ensure that the network mechanisms are not damaged when being used or transported.

Specifications

Electrical

Frequency Range: 6.5 GHz – 10.0 GHz
Rejection: 50 dB minimum @ tuned frequency
80 dB typical
Insertion Loss*: 35 dB worst case
Notch Characteristics:
Total Rejection** 35dB or more at f_o ±(<0.006f_o)
50dB or more at f_o ±(<0.0006f_o)
Impedance: Designed for 50 ohms system
Connector: Type N, female

** Total Rejection = Insertion loss at f_o + Notch Depth

Mechanical

Height: 40.2 cm (15.8″)
(w/ maximum screw extension)
Height, Cylinder: 14.7 cm (5.8″)
Diameter, Cylinder: 7.9 cm (3.1″)
Width, Stand: 13.0 cm (5.1″)
Weight: 3.4 kg (7.5 lbs.)

Product Sheet