Band Pass Filters
 
 

Contact

 
Band Pass Filters
These filters are developed for various type of radio equipment for business use and for base station equipment of public radio communications. There are three types available depending on operating frequency band: Herical resonator type, Coaxial resonator type and Dielectric resonator type.
Common specifications
Impedance 50[
V.S.W.R. 1.3 Max.
Operating temp. -10XC to +50XC
Helical Resonator Type
Model Passing
Frequency
Insertion
Loss
(dB)
Band
Width
(MHz)
Attenuation
(dB)
Power
(W)
Connec-
tions
SFH 301 Appointed Freq.
in 54 to 72MHz
1.0 - 40 at fo
5MHz
50 N-J
SFH 302 Appointed Freq.
in 140 to 170MHz
Coaxial Resonator Type
Model Passing
Frequency
Insertion
Loss
(dB)
Band
Width
(MHz)
Attenuation
(dB)
Power
(W)
Connec-
tions
SFC 319 Appointed Freq.
in 360 to 470MHz
1.5 4 40 at fo
5MHz
30 N-J
SFC 320 Appointed Freq.
in 800 to 960MHz
1.0 10 30 at fo
20MHz
SMA-J
SFC 321 Appointed Freq.
in 1.4 to 1.5GHz
Dielectric Resonator Type
Model Passing
Frequency
Insertion
Loss
(dB)
Band
Width
(MHz)
Attenuation
(dB)
Power
(W)
Connec-
tions
SFD 316 Appointed Freq.
in 6.4 to 7.1GHz
1.0 40 40 at fo
130MHz
5 SMA-J
SFD 317 Appointed Freq.
in 7.1 to 7.8GHz