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     Microwave Circuits, Inc. is an industry-leading provider of high performance RF and microwave filters, diplexers, and duplexers. Founded in 1994, we have served the high quality commercial and defense filter markets for over a decade and can readily provide all of the products shown on this web site. We design and manufacture customized filters, multiplexers and assemblies to your specifications. Engineers will work closely with you to design a filter product that fully satisfies your application requirements, backed by a world-class manufacturing ERP computer system to meet your delivery schedules. 
     Our technical expertise extends from printed circuits, ceramics, lumped components, helicals, machined cavities, and waveguides to complex filters made by the integration of these different technologies into a single filtering device. These are field proven filters. The patented surface mount ceramic filters are used by the thousands in low phase noise applications. The patented surface mount L/C filters with epoxy encapsulation are perfect for extreme environments and allow for tunability in production. The dielectric loaded RF cavities and duplexers are temperature stable, high Q, high power handling, and have significantly reduced size, saving valuable rack space.
     The product line is divided into 7 major categories: Bandpass Filters; Lowpass Filters; Highpass Filters; Notch Filters; Diplexers/Duplexers; Cavities/Combiners; and Ceramics/Helicals.
     Microwave Circuits, Inc. provides more than standard line products, we provide variations of these products to suit your individual needs and custom designed systems.

Note: Some older or custom produced products may not be included on this site. If you don't find what you need, please either follow our link for RFQ, call us at North America Toll Free 1-800-642-2587 or Fax us at (434) 455-0291 and we will be happy to assist you.