Switched Filter Banks

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

Solution Brochure Capabilities

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


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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.








Special Processes & Technologies


  • Multiple RF Screen Rooms
  • Full Complement of Test Equipment (DC – 3GHz) including Network, Spectrum, and Modulation Analyzers; Signal and Function Generators
  • Eagleware GENESYS™RF/Microwave Design Tool together with SPECTRASYS™, an RF architecture simulator and EMPOWER/ML™, a multi-level planar 3D EM simulator
  • MathCAD13 for circuit simulation and analysis
  • Mentor Graphics DxDesigner Schematic Capture & Circuit Board Layout Tool
  • Autodesk Inventor® Series including:
    1.Autodesk Inventor® software for 2D/3D design and documentation
    2.AutoCAD® Mechanical for productive 2D drawing and detailing
    3.Autodesk® Vault to synchronize your design efforts

Environmental Test

  • Custom developed test fixtures for automated testing of customer units
  • Temperature/Humidity chambers capable of thermal cycling units under test from -73°C to +175°C. Pole/Zero currently has multiple thermal chambers including the TestEquity 115, TestEquity 1007C, Russells F-18, Russells RB-32 and Russells RDV-32 chambers
  • MB Dynamics C10E, LDS V830 and V850 Electrodynamic vibration tables for shock, random, & sinusoidal testing cycles
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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.



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