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LPZ 300

Coaxial Low-Pass Filter for the 200 MHz to 300 MHz frequency range

  • Passes all signals in or below the 200 MHz to 300 MHz frequency range
  • Rejects signals above this range.

DESCRIPTION

    • Absolute stop band from 600 MHz to 6 GHz
      - no degradation at harmonics (Zolotarev-characteristic).
    • Attenuation in stop band better than 60 dB.
    • Insertion loss in pass range less than 0.4 dB.
    • Provided with brackets for panel mounting.

ORDERING DESIGNATIONS 

TYPEPRODUCT NO.
LPZ 300200001294

SPECIFICATIONS

ELECTRICAL 
MODELLPZ 300
FILTER TYPELow-pass filter for the 200 - 300 MHz band
FREQUENCYPass band: 200 - 300 MHz
Stop band: 600 MHz - 6 GHz
MAX. INPUT POWER250 W
INSERTION LOSS (PASS BAND)≤ 0.4 dB
1dB CUT-OFF FREQUENCY> 320 MHz
ATTENUATION (STOP BAND)> 60 dB
SWR≤ 1.75
MECHANICAL 
TEMP. RANGE–30° C → +80° C
CONNECTORSN-female
DIMENSIONS
(L x W x H)
375 x 40 x 36 mm /
14.7 x 1.5 x 1.4 in.
WEIGHTApprox. 80 g / 1.4 lb.
MOUNTING4 holes ø3.5 mm

TYPICAL GAIN AND SWR CURVE

LPZ-300-swr-curve-400x

MOUNTING DETAILS

LPZ-300-holeplacing450x

The LPZ 300 is used to prevent RFI (Radio Frequency Interference) caused by excessive harmonic-generation fromtransmitters operationg in the 200 MHz to 300 MHz frequency range. By rejection, the filter reduces the amplitude of the harmonics and prevents from being radiated by the antenna.


The filter is normally used in connection with base station transmitters, but as it is mechanically very ruggedly designed, it is perfectly suited for mobile and marine applications as well.

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