Switched Filter Banks & Preselectors

Building on a core competency in microwave filters and PIN diode switches, MPG offers a full range of Switched Filter Banks and Pre-selectors from standard to full custom designs. 



MPG’s Pre-selectors, Channelizers, Switched Multiplexers and Switched Filter Banks offer up to 20 channels and consistently deliver over a frequency range of 10 MHz to 40 GHz. By incorporating any topology into the switch filter banks, from high-Q cavity or dielectric resonators to printed thin-film filters, we deliver unmatched performance. Additional flexibility is created by incorporating amplification, frequency conversion, and limiters as well as BIT function. MPG also has high power options supporting a variety of communications and jammer products.


The benefits of MPG’s Pre-selectors, Channelizers, Switched Multiplexers and Switched Filter Banks are many and include:

  • High levels of signal isolation
  • Higher operating power levels
  • Lower insertion loss
  • Seamless switching in nanoseconds
  • Low power consumption
  • Support for multi-octave frequency bands
  • Compact packaging design available
  • Rugged design with mounting flange for military application available


Problems Solved

MPG’s Pre-selectors, Channelizers, Switched Multiplexers and Switched Filter Banks are easily customized to meet customer applications, including the following challenges:

  • Spurious and harmonic content generated by high power amplifiers and transmitters in the UHF band
  • Out-of-band signals that could result in spurious signals
  • Compact, lightweight applications
  • Strong out-of-band signals that could potentially saturate the receiver front-end

Markets & Applications


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Connecting & Protecting People®

MPG Solutions® provides expert support throughout all of the phases in our customer experience, from quoting the perfect solution to continued post-delivery support and extended warranty coverage. Let's take on your latest design challenge together.








Markets & Applications


MPG offers a full suite of Pre-selectors, Channelizers, Switched Multiplexers and Switched Filter Banks, applicable for filtering of power amplifiers, signal jamming, and cosite mitigation common to shipboard and other military high-speed radio systems. Delivering versatile performance, our Pre-selectors, Channelizers, Switched Multiplexers and Switched Filter Banks are applicable for multiple markets, including Electronic Intelligence (ELINT) and Electronic Warfare (EW).

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Special Processes and Technologies

  • In-house environmental and RF testing capabilities
  • NIST compliance calibration systems
  • 3-D printing
  • Machine shop with CNC mills, brakes, benders, shearers, chemical metal etching capabilities and CNC lathes
  • World class plating facility
  • Automated conformal coating equipment
  • Capacitor dicing and trimming
  • Ceramic resonator grinding
  • Class 7 clean rooms
  • Inductive soldering
  • Laser welding and seam sealing
  • Semi-automated reflow lines
  • SMT automated pick and place, reflow lines

Switched Filter Banks


Explore Products And Solutions By:

Search & Design Tools

Product Finder

Browse products by type, class, family and operating frequency.
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Filter Wizard

Use to search or build K&L Microwave® filters.
Go To Filter Wizard

QuEST Filter Tool

Use to build custom BSC filters.
Go To QuEST Filter Tool

Technical Questions?

Our team is composed of highly-technical engineers empowered to quickly assist you in identifying a high-performance RF/microwave solutions. Contact our engineers to see how we can solve your mission-critical challenges.

Case Studies & Innovation Stories

The Mission

NASA’s James Webb Space Telescope will capture images and spectra that will help us understand how today’s universe emerged.


MPG Receives Boeing Performance Excellence Award

Dow-Key® Microwave was selected by Boeing to receive the Boeing Performance Excellence Award. This is their third time receiving the award.



P-8A Poseidon Mission

MPG equipment delivered on the goal of Connecting and Protecting People by providing clear communicatins over long distances in this search and rescue (SAR) event.