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Filter Features

• High order maximally flat design
• Low passband insertion loss
• Broad, high frequency pass and stopbands

Learn More About Filters

RF/Microwave filters are a fundamental component of signal processing. They pass signals within their passband and reject signals outside the passband. Marki filters are reflective, meaning that they reflect signals outside of the passband. Important specifications include rejection (the measure of how well undesired signals are rejected), steepness of the rejection skirts, insertion loss, and return loss. Typically size is also important for filters; there is a fundamental tradeoff between rejection and filter size, as both are determined by the ‘order’ of the filter. A higher order filter has more rejection, but also requires more space and has a higher insertion loss. Marki filters offer moderate rejection and rejection skirts, but across very broad bandwidths.

Filters

FeaturedModelDatasheetPriceStockCutoff Frequency [GHz]30 dB Rejection Frequency [GHz]50 dB Rejection Frequency [GHz]80 dB Rejection Frequency [GHz]S-ParametersSurface MountBare DieModuleRoHS
NFH-1700 PDF Download$525.00171411.56FH-1700NNYN
NFH-1800 PDF Download$525.0001815126.5FH-1800NNYN
NFH-2600 PDF Download$675.002621.51811FH-2600NNYN
NFH-4000 PDF Download$795.0004036.63325FH-4000NNYN
NFH-5500 PDF Download$1,100.0055514535FH-5500NNYN

FeaturedModelDatasheetPriceStockCenter Frequency [GHz]Low Frequency 1 dB Cutoff [GHz]High Frequency 1 dB Cutoff [GHz]S-ParametersSurface MountBare DieModuleRoHS
NFB-0785SM PDF Download$81.2507.857.258.45FB-0785SMYNNN
NFB-0850SM PDF Download$81.258.57.859.2FB-0850SMYNNN
NFB-0900SM PDF Download$81.259.08.49.6FB-0900SMYNNN
NFB-0955SM PDF Download$81.259.558.910.2FB-0955SMYNNN
NFB-1050SM PDF Download$81.2510.59.611.4FB-1050SMYNNN
NFB-1140SM PDF Download$81.2511.410.4512.35FB-1140SMYNNN
NFB-1215SM PDF Download$81.2512.1511.3512.95FB-1215SMYNNN
NFB-1300SM PDF Download$81.2513.012.014.0FB-1300SMYNNN
NFB-1445SM PDF Download$81.2514.4513.215.7FB-1445SMYNNN
NFB-1575SM PDF Download$81.25015.7514.616.9FB-1575SMYNNN
NFB-0785 PDF Download$276.0007.857.258.45FB-0785NNYN
NFB-0860 PDF Download$276.0008.67.959.25FB-0860NNYN
NFB-0905 PDF Download$276.0009.058.459.65FB-0905NNYN
NFB-0955 PDF Download$276.009.558.910.2FB-0955NNYN
NFB-1050 PDF Download$276.00010.59.7511.25FB-1050NNYN
NFB-1145 PDF Download$276.0011.4510.612.3FB-1145NNYN
NFB-1215 PDF Download$276.0012.1511.313FB-1215NNYN
NFB-1310 PDF Download$276.00013.112.214FB-1310NNYN
NFB-1390 PDF Download$276.0013.913.4814.32FB-1390NNYN
NFB-1445 PDF Download$276.00014.4513.315.6FB-1445NNYN
NFB-1575 PDF Download$276.0015.7514.517FB-1575NNYN
NFB-1725 PDF Download$276.0017.2515.818.7FB-1725NNYN
NFB-1800 PDF Download$316.2501815.8520.15FB-1800NNYN
NFB-1840 PDF Download$316.25018.416.6520.15FB-1840NNYN
NFB-2000 PDF Download$316.2502018.621.4FB-2000NNYN
NFB-2060 PDF Download$316.2520.618.9522.25FB-2060NNYN
NFB-2400 PDF Download$316.252422.425.6FB-2400NNYN
NFB-2430 PDF Download$316.25024.321.2527.35FB-2430NNYN
NFB-3270 PDF Download$412.50032.728.7536.65FB-3270NNYN
NFB-3700 PDF Download$412.503732.5541.45FB-3700NNYN
NFB-4000 PDF Download$572.2504034.445.6FB-4000NNYN
NFB-2480 PDF Download$377.00024.821.128.5FB-2480NNYN
NFB-2770 PDF Download$412.5027.723.5531.85FB-2770NNYN
NFB-1655 PDF Download$276.0016.5515.817.3FB-1655NNYN
NFB-1690 PDF Download$276.00016.915.718.1FB-1690NNYN
NFB-1500 PDF Download$365.63151218FB-1500NNYN
NFB-2250 PDF Download$412.50022.51827FB-2250NNYN
NFB-2500 PDF Download$472.500251832FB-2500NNYN
NFB-2020 PDF Download$316.2520.217.223.2FB-2020NNYN
NFB-1385 PDF Download$373.7513.8511.516.2FB-1385NNYN
NFB-1450 PDF Download$365.6314.511.117.9FB-1450NNYN
NFB-3300 PDF Download$472.50332640FB-3300NNYN
Y PDF Download$54.00242127MFB-2400NYNY
Y PDF Download$54.00251832MFB-2500NYNY
NMFB-3300 PDF Download$54.00332640MFB-3300NYNY
Y PDF Download$54.00352445MFB-3450NYNY
NMFB-5350 PDF Download$65.00534067MFB-5350NYNY

Lowpass

A lowpass filter has a direct connection from input to output, passing DC and all frequencies below some specified 3 dB cutoff frequency. After the 3 dB cutoff frequency the insertion loss increases dramatically and the filter (ideally) rejects all frequencies above this point. Physically realizable filters have ‘re-entry’ modes that limit the high frequency capability of the filter. At some higher frequency the rejection of the filter degrades, and higher frequency signals can appear at the output of the filter. Marki lowpass filters are microstrip filters that are CAD optimized and built on a low loss substrate, offering very broad rejection bands before re-entrant modes appear.

Highpass

A highpass filter will reject signals below their designed frequency of operation, and pass all signals above this. Important specifications include rejection of low frequency signals, insertion loss, return loss, and insertion loss flatness above the 3 dB cutoff frequency. Marki highpass filters are based on a cavity design that offers operation to very high frequencies with broad, resonance free passband and stopbands.

Filters

FeaturedModelDatasheetPriceStockCutoff Frequency [GHz]30 dB Rejection Frequency [GHz]50 dB Rejection Frequency [GHz]80 dB Rejection Frequency [GHz]S-ParametersSurface MountBare DieModuleRoHS
NFH-1700 PDF Download$525.00171411.56FH-1700NNYN
NFH-1800 PDF Download$525.0001815126.5FH-1800NNYN
NFH-2600 PDF Download$675.002621.51811FH-2600NNYN
NFH-4000 PDF Download$795.0004036.63325FH-4000NNYN
NFH-5500 PDF Download$1,100.0055514535FH-5500NNYN

Bandpass

A bandpass filter is capacitively coupled between the two ports, offering rejection of both low frequency and high frequency signals and selecting a particular band referred to as the ‘passband’. Important specifications include the center frequency, passband (expressed either as start and stop frequencies or as a percentage of the center frequency), rejection and steepness of rejection, and width of the rejection bands. All bandpass filters will have re-entrant modes at higher frequencies, so the width of the high frequency rejection band is an important consideration. Marki bandpass filters are microstrip filters that are CAD optimized and built on a low loss substrate, offering extremely broad rejection bands.

Filters

FeaturedModelDatasheetPriceStockCenter Frequency [GHz]Low Frequency 1 dB Cutoff [GHz]High Frequency 1 dB Cutoff [GHz]S-ParametersSurface MountBare DieModuleRoHS
NFB-0785SM PDF Download$81.2507.857.258.45FB-0785SMYNNN
NFB-0850SM PDF Download$81.258.57.859.2FB-0850SMYNNN
NFB-0900SM PDF Download$81.259.08.49.6FB-0900SMYNNN
NFB-0955SM PDF Download$81.259.558.910.2FB-0955SMYNNN
NFB-1050SM PDF Download$81.2510.59.611.4FB-1050SMYNNN
NFB-1140SM PDF Download$81.2511.410.4512.35FB-1140SMYNNN
NFB-1215SM PDF Download$81.2512.1511.3512.95FB-1215SMYNNN
NFB-1300SM PDF Download$81.2513.012.014.0FB-1300SMYNNN
NFB-1445SM PDF Download$81.2514.4513.215.7FB-1445SMYNNN
NFB-1575SM PDF Download$81.25015.7514.616.9FB-1575SMYNNN
NFB-0785 PDF Download$276.0007.857.258.45FB-0785NNYN
NFB-0860 PDF Download$276.0008.67.959.25FB-0860NNYN
NFB-0905 PDF Download$276.0009.058.459.65FB-0905NNYN
NFB-0955 PDF Download$276.009.558.910.2FB-0955NNYN
NFB-1050 PDF Download$276.00010.59.7511.25FB-1050NNYN
NFB-1145 PDF Download$276.0011.4510.612.3FB-1145NNYN
NFB-1215 PDF Download$276.0012.1511.313FB-1215NNYN
NFB-1310 PDF Download$276.00013.112.214FB-1310NNYN
NFB-1390 PDF Download$276.0013.913.4814.32FB-1390NNYN
NFB-1445 PDF Download$276.00014.4513.315.6FB-1445NNYN
NFB-1575 PDF Download$276.0015.7514.517FB-1575NNYN
NFB-1725 PDF Download$276.0017.2515.818.7FB-1725NNYN
NFB-1800 PDF Download$316.2501815.8520.15FB-1800NNYN
NFB-1840 PDF Download$316.25018.416.6520.15FB-1840NNYN
NFB-2000 PDF Download$316.2502018.621.4FB-2000NNYN
NFB-2060 PDF Download$316.2520.618.9522.25FB-2060NNYN
NFB-2400 PDF Download$316.252422.425.6FB-2400NNYN
NFB-2430 PDF Download$316.25024.321.2527.35FB-2430NNYN
NFB-3270 PDF Download$412.50032.728.7536.65FB-3270NNYN
NFB-3700 PDF Download$412.503732.5541.45FB-3700NNYN
NFB-4000 PDF Download$572.2504034.445.6FB-4000NNYN
NFB-2480 PDF Download$377.00024.821.128.5FB-2480NNYN
NFB-2770 PDF Download$412.5027.723.5531.85FB-2770NNYN
NFB-1655 PDF Download$276.0016.5515.817.3FB-1655NNYN
NFB-1690 PDF Download$276.00016.915.718.1FB-1690NNYN
NFB-1500 PDF Download$365.63151218FB-1500NNYN
NFB-2250 PDF Download$412.50022.51827FB-2250NNYN
NFB-2500 PDF Download$472.500251832FB-2500NNYN
NFB-2020 PDF Download$316.2520.217.223.2FB-2020NNYN
NFB-1385 PDF Download$373.7513.8511.516.2FB-1385NNYN
NFB-1450 PDF Download$365.6314.511.117.9FB-1450NNYN
NFB-3300 PDF Download$472.50332640FB-3300NNYN
Y PDF Download$54.00242127MFB-2400NYNY
Y PDF Download$54.00251832MFB-2500NYNY
NMFB-3300 PDF Download$54.00332640MFB-3300NYNY
Y PDF Download$54.00352445MFB-3450NYNY
NMFB-5350 PDF Download$65.00534067MFB-5350NYNY

Diplexers Features

• High Isolation
• Reentrance and Resonance Free Passbands
• Reflectionless termination of unwanted harmonics
• Broad, high frequency passbands
A diplexer is a three port device that combines or divides a common signal according to frequency, into low pass and high pass ports. Unlike a duplexer, which combines two bandpass filters, diplexers are very broadband. Important specifications include frequency coverage, out of band rejection for the high/low pass filters, isolation between the high/low pass filters, insertion loss, and return loss. Marki diplexers offer extremely broad, resonance free passbands. Diplexers can be used as low loss combiners or dividers for signals with different frequencies or as reflectionless filters (with one port terminated) at the output of mixers and other nonlinear devices with many harmonics.

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