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Lowpass Filter

A Lowpass Filter (LPF), also known as a high-cut filter, is a passive RF component that passes signals below a specified cutoff frequency while attenuating all frequencies above it. At Concept Microwave, our lowpass filters feature a direct connection from input to output, passing DC and all frequencies below the specified 3 dB cutoff frequency with low insertion loss, while providing high rejection in the stopband to suppress higher-frequency interference, harmonics, and spurious signals
  • VHF/UHF High-Power Cavity Lowpass Filter | DC–800 MHz | 500W | 7/16 DIN Female | ≥40 dB Rejection

    VHF/UHF High-Power Cavity Lowpass Filter | DC–800 MHz | 500W | 7/16 DIN Female | ≥40 dB Rejection

    Concept Model CLF00000M00800DIN01 is a high-performance passive cavity lowpass filter designed for high-power operation across the DC–800 MHz frequency range. Covering the full VHF and UHF bands, this filter delivers exceptionally low insertion loss of ≤0.6 dB and ≤1.5 VSWR throughout its passband, while achieving ≥40 dB rejection in the 1,000–2,000 MHz stopband

  • HF/VHF Low-Band High-Power Cavity Lowpass Filter | DC–200 MHz | 500W | 7/16 DIN Female | ≥40 dB Rejection

    HF/VHF Low-Band High-Power Cavity Lowpass Filter | DC–200 MHz | 500W | 7/16 DIN Female | ≥40 dB Rejection

    Concept Model CLF00000M00200DIN01 is a high-performance passive cavity lowpass filter designed for high-power operation across the DC–200 MHz frequency range. Covering the full HF band and the lower VHF band, this filter delivers exceptionally low insertion loss of ≤0.6 dB and ≤1.5 VSWR throughout its passband, while achieving ≥40 dB rejection in the 250–800 MHz stopband.

  • C/X/Ku-Band Wideband Lowpass Filter | 6–16 GHz | 30W | High Rejection ≥40 dB | N-Female Connector

    C/X/Ku-Band Wideband Lowpass Filter | 6–16 GHz | 30W | High Rejection ≥40 dB | N-Female Connector

    Concept Model CLF06000M16000N01 is a high-performance passive lowpass filter designed for broadband operation across the 6-16 GHz frequency range. Covering the upper C-band, the full X-band, and the lower Ku-band, this filter delivers ≤2.0 dB insertion loss and ≤1.8 VSWR throughout its passband, while achieving ≥40 dB rejection in the 16.5–25 GHz stopband. Ideal for SATCOM, radar, 5G and microwave backhaul systems. Custom designs available.

  • L/S/C-Band High-Power Wideband Lowpass Filter | 1–8 GHz | 100W | ≥40 dB Rejection | N-Female Connector

    L/S/C-Band High-Power Wideband Lowpass Filter | 1–8 GHz | 100W | ≥40 dB Rejection | N-Female Connector

    Concept model CLF01000M18000N02 is a high-performance passive lowpass filter designed for broadband, high-power operation across the 1-8GHz frequency range. Covering the full L-band, S-band, and C-band, this filter delivers ≤2.0 dB insertion loss and ≤2.0 VSWR throughout its passband, while achieving ≥40 dB rejection in the 8.4–18 GHz stopband ,making it an ideal choice for demanding RF transmission applications in satellite communication, cellular base stations, radar systems, and broadcast equipment.

  • X/Ku-Band Lowpass Filter | 10–18 GHz | 30W | High Rejection ≥40 dB | N-Female Connector

    X/Ku-Band Lowpass Filter | 10–18 GHz | 30W | High Rejection ≥40 dB | N-Female Connector

    Concept model CLF10000M18000N01 is a high-performance passive lowpass filter designed for broadband operation across the 10–18 GHz frequency range . With a passband covering both the upper X-band and the full Ku-band, this filter delivers ≤2.0 dB insertion loss and ≤1.8 VSWR throughout its passband, while achieving ≥40 dB rejection in the 18.5–25 GHz stopband , making it an ideal choice for demanding RF front-end applications in satellite communications, radar systems, and 5G microwave links.

  • VHF/UHF Low-Band High-Power Cavity Lowpass Filter | DC–400 MHz | 500W | 7/16 DIN Female | ≥40 dB Rejection

    VHF/UHF Low-Band High-Power Cavity Lowpass Filter | DC–400 MHz | 500W | 7/16 DIN Female | ≥40 dB Rejection

    Concept Model CLF00000M00400DIN01 is a high-performance passive cavity lowpass filter designed for high-power operation across the DC–400 MHz frequency range. Covering the full VHF band and the lower UHF band, this filter delivers exceptionally low insertion loss of ≤0.6 dB and ≤1.5 VSWR throughout its passband, while achieving ≥40 dB rejection in the 500–1,500 MHz stopband

  • VHF/UHF High-Power Cavity Lowpass Filter | DC–1 GHz | 500W | 7/16 DIN Female | ≥40 dB Rejection

    VHF/UHF High-Power Cavity Lowpass Filter | DC–1 GHz | 500W | 7/16 DIN Female | ≥40 dB Rejection

    Concept Model CLF00000M01000DIN01 is a high-performance, high-reliability lowpass filter designed for demanding RF and microwave applications requiring high power handling and excellent harmonic suppression .With a passband from DC to 1000MHz and an average power rating of 500W, which delivers stable performance in base station, defense, and broadcast systems

  • L-Band High-Power Cavity Lowpass Filter | 1–2 GHz | 100W | ≥40 dB Rejection | N-Female Connector

    L-Band High-Power Cavity Lowpass Filter | 1–2 GHz | 100W | ≥40 dB Rejection | N-Female Connector

    Concept model CLF01000M02000N02 is a high-performance passive cavity lowpass filter designed for high-power operation across the 1-2 GHz L-band frequency range. This filter delivers ≤2.0 dB insertion loss and ≤2.0 VSWR throughout its passband, while achieving ≥40 dB rejection in the 2.1-18 GHz stopband. Ideal for SATCOM ground stations, defense communications, radar and base stations

  • L/S-Band High-Power Lowpass Filter | 1-4 GHz | 100W | ≥40 dB Rejection | N-Female Connector

    L/S-Band High-Power Lowpass Filter | 1-4 GHz | 100W | ≥40 dB Rejection | N-Female Connector

    Concept Model CLF01000M04000N02 is a high-performance passive lowpass filter designed for high-power operation across the 1-4 GHz frequency range. Covering the full L-band and S-band, this cavity filter delivers ≤2.0 dB insertion loss and ≤2.0 VSWR throughout its passband, while achieving ≥40 dB rejection in the 4.2–18 GHz stopband. Ideal for SATCOM ground stations, radar systems, cellular base stations and broadcast transmitters. Custom designs available

  • 1GHz Low Pass Filter | DC–1000 MHz Lowpass Filter, 80 dB Rejection, 30W, N-Female

    1GHz Low Pass Filter | DC–1000 MHz Lowpass Filter, 80 dB Rejection, 30W, N-Female

    The CLF00000M01000N01B 1GHz low pass filter is designed for sub-1 GHz RF systems where harmonics and out-of-band interference above 1.1 GHz must be strongly suppressed. It provides a DC-1000MHz passband with ≤3.0 dB insertion loss, while delivering ≥80 dB rejection from 1100 to 6000 MHz. it is well suited for VHF/UHF radio systems, 800/900 MHz cellular and ISM applications, transmitter harmonic suppression, receiver front-end protection, and EMC test setups

  • High Rejection 1.3 GHz Cavity LowPass Filter for GPS/GNSS & VHF/UHF Systems

    High Rejection 1.3 GHz Cavity LowPass Filter for GPS/GNSS & VHF/UHF Systems

    The CLF00000M01300A02 is designed to pass signals from DC to 1300 MHz with minimal insertion loss (≤2.0dB) while providing outstanding rejection of high-frequency interference. It offers ≥30dB rejection at 1500 MHz and ≥50dB rejection from 1700 MHz to 20 GHz, effectively eliminating unwanted harmonics, out-of-band noise, and spurious signals.

    Concept offers the best Duplexers/triplexer/filters in the industry, Duplexers/triplexer/filters have been broadly used in Wireless, Radar, Public Safety, DAS

  • DC–600 MHz 100W Lowpass Filter  Ultra-High Rejection 80dB Cavity Low Pass Filter for VHFUHF & LMR Systems

    DC–600 MHz 100W Lowpass Filter Ultra-High Rejection 80dB Cavity Low Pass Filter for VHFUHF & LMR Systems

    The CLF00000M00600N01 is is designed to pass signals from DC to 600 MHz with ultra-low insertion loss (≤1.0dB) while providing exceptional rejection of high-frequency interference. With ≥80dB rejection from 800 MHz to 6 GHz, 100W input power , it effectively eliminates unwanted harmonics, out-of-band noise, and spurious signals, ensuring clean signal transmission in congested RF environments

    Concept offers the best Duplexers/triplexer/filters in the industry, Duplexers/triplexer/filters have been broadly used in Wireless, Radar, Public Safety, DAS

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