Bandpass Filter Products

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.

UB Series - Ultra-Miniature Reduced Size Surface Mount

Product

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

Product

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

Product

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

Product

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)

Product

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

Product

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

Product

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)

Product

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

Product

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

Product

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.

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