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K&L Microwave provides bandpass filters in multiple topologies built to customers' electrical, mechanical, and environmental specifications. The list below contains part numbers meeting existing industry and customer specifications, as well as product families. Use the quote cart to request a quote on a specific design. When considering a particular family of parts, use Filter Wizard (a link button will be provided when appropriate) to determine a specific part number within the given family.
Ultra-Miniature - 428 MHz Ultra-Miniature Filter
Extremely Small In Size
All Pole DesignUB Series - Ultra-Miniature Reduced Size Surface Mount
Bandpass Introduced on Filter Wizard in May 2015
Frequency 300 to 2500 MHz, 5 to 20% Bandwidth
Lowpass Also Available, Highpass and Bandstop Soon
Contact factory for custom requirements.
"Data Sheet" has bandpass series (or see lowpass example).
LCTF Family - Thin Film Lumped Element (TFLE) Filters
2 GHz to 18 GHz; 2% to 40% Relative Bandwidth;
1.5:1 VSWR; Small Footprint; 5W Power Handling;
High IP3; SMT Applications; Broad spurious-free stopbands.
All-Pole and Elliptic Bandpass Responses.
Highpass, Lowpass, and Notch designs, as well.
B Series - Tubular Bandpass Filters
Economical Design / High Performance
2-8 Sections / 0.05 dB Chebychev Design
55 MHz to 6000 MHz / 3 dB BW 4-40%
Ruggedized Package Designs / See Dimensions
Use Filter Wizard for B Series
BTBPF for Up-Converters - Broadband Terminated BPF
Typically in up-conversion applications, matching is accomplished by placing an attenuator pad between the mixer and filter, followed later by re-amplification of the RF signal. K&L’s BTBPF eliminates the need to attenuate then re-amplify.
C Series - C Series (Narrow Bandwidth)
Covers the 60 MHz to 30 GHz Frequency Range
High "Q" Allows Narrow Bandwidth With Low Loss
"Q" Values of up to 10,000
3 dB BW Available from 0.1% to 3.5% (ƒ0)
Low Ripple Chebyshev Response / Ruggedized Package
DR Series - Dielectric Resonator Filters
Through the use of ceramic technology, this filter series
offers superior temperature stability and low insertion loss.
Available in standard packages with basic Chebychev design.
Connectors available are SMA and RF pins.
Use Filter Wizard for standard DR Series and KeL-fil.
DR Series - KeL-fil Family
KeL-fil ceramic bandpass filters are 2 to 6 section designs ranging in frequency from 270 MHz to 3000 MHz providing users with low-cost filter solutions ideally suited for wireless applications. These designs are featured in Filter Wizard.
ED Series - Interdigital (High Frequency, Broadband)
Covers the 51 MHz to 18 GHz Frequency Range
3 dB BW Available from 5% to 50% of fo
Designs that cover up to 40 GHz also available
High "Q" Design Allows Small Package Size and Low Loss
FC Series - Filter in Connector
Custom Solutions for Bandpass, Lowpass, Highpass,
and Notch Responses
Compact and Rigid - Filter Resides in an SMA Adaptor
External to Electronic Equipment and Easily Maintained
Power Handling 10 Watts CW
SPCL-00500 - SPCL-00500 DC Block
Convenient insertion into any system/coaxial line ...
High DC blocking voltage: >1000 VDC
High RF power handling: >50 W avg., 1000 W peak
Octave bandwidths, Low insertion loss, Low PIM, Small size
Contact factory for custom specifications.
FV Series - Combline (High Frequency, Medium Bandwidth)
Covers the 500 MHz to 40 GHz Frequency Range
Small Package, High "Q" Response
Combline Design Results in Low Insertion Loss Performance
3 dB BW Available from 3-18%
Ruggedized Package with Custom Package Designs Available
FV Series - Surface Mount Cavity Filter
Leadless, High Q, Low Loss, Excellent Ult. Rej.
Mounts on RO4003 (.012”) with 50-ohm line (.026” )
Other Types of Printed Wiring Board Available on Request
Up to 18 GHz, Relative Bandwidths up to 8%
Option to Hermetically Seal
Mounts on RO4003 (.012”) with 50-ohm line (.026” )
Other Types of Printed Wiring Board Available on Request
Up to 18 GHz, Relative Bandwidths up to 8%
Option to Hermetically Seal
GPS Broadband Filter - GPS Broadband Filter
Ultra Low Profile Package
Designed for Low Cost While Providing High “Q” Response
High Out of Band Attenuation Through to 5.0 GHz
Other Package Styles Available
4DR10-1227.6/U24-PX/PX - GPS Filter
Low Profile Package
Leaded Surface Mount Configuration
Designed for Low Cost While Providing High “Q” Response
Minimal Group Delay Distortion
Removal of Unwanted Signal L1 or L2 by More than 60 dB
Mini HF Bandpass - Miniature High Frequency Bandpass
18 GHz to 36 GHz (Ku, K, and Ka Bands)
5% to 25% bandwidth
Small Size; PCB Mount
Ins Loss below 3 dB, dependent on order and bandwidth
9CSP50-00003 - Helical Resonator Filter
High Selectivity
Greater than 90 dB Ultimate Rejection
Low Passband Insertion Loss
Excellent Return Loss
Greater than 90 dB Ultimate Rejection
Low Passband Insertion Loss
Excellent Return Loss
10CSP-305/X29-O/O - K&L Microwave Helical Resonator Filter (Cross Coupled, High Power ) Helical Resonator Filter (Cross Coupled, High Power )
High "Q" / Less Than 3% Bandwidth / Low Loss
Passband Power Level of 200 watts CW
Low Passive Intermodulation Products
Out-of-Band Rejection of 110 dB
Shock and Vibration Performance to MIL-STD 810
Passband Power Level of 200 watts CW
Low Passive Intermodulation Products
Out-of-Band Rejection of 110 dB
Shock and Vibration Performance to MIL-STD 810
High Power Cavity - High Power Cavity
High Q Designs
Low Insertion Loss
Cross-Coupling Available
Rugged Construction
Pulse Shaping Designs Available
IB Series - Lumped Component Microminiature Bandpass
Covers the 30 MHz to 10 GHz Frequency Range
Small, Compact Package
Standard 3 dB BW Available from 3-15%
3 dB BW also Available up to 70% (Contact Factory)
0.05 dB Chebyshev Design
IB Series - 3IB10-487.5/TX9.8PX (Extremely Low Profile)
0.150" Vertical Height / Extremely Low Weight
Low Insertion Loss - Pin Input/Output
Rugged Design for Military Applications
Sealed for Harsh Environments / Custom Designs Available
IB Series - 5IB10-4750/T800-PX/PX
Low Profile / Surface Mount
High Frequency, Lumped Element
Secure Ground and Airborne Communications
Military and Commercial Airborne
Ground Base Radar
IB Series - 5IB10-7800/T800-PX/PX
Low Profile / Surface Mount
High Frequency, Lumped Element
Secure Ground and Airborne Communications
Military and Commercial Airborne
Ground Base Radar
IB Series - IB60 Series Surface Mount Filters
Available in Chip and Wire and Ceramic Filter Topology
Surface Mount / Suitable for Reflow Soldering
Available in Widest Variety of Designs
Pole-Placed Options Available for Tight Stop Bands
Housings in Stock, Fast Prototype and Delivery Available
6FVSP-1622.375/X8.25-NP/N - Iridium Bandpass Filter
Standard Iridium Bandpass Filter
Low Passband Loss
Small Compact Mechanical
High Reject Band Isolation
Choice of SMA, N, or TNC Male and Female Connectors
