Ceramic Coaxial Resonators

Available in a variety of different technologies

Ceramic Resonators

Coaxial resonators made with modern, high performance ceramic dielectric materials are very useful as compact frequency standards, filter elements, and distributed inductive or capacitive circuit elements. The high Q obtained in the UHF and microwave frequency range makes these resonators ideal for many applications. When cost, size, and stability are important, these resonators are the best choice.

Coaxial resonators can be supplied as quarter wave resonators with one end fully metallized (i.e., shorted) and the other end open, or as half-wave resonators with both ends open. For surface mounting, tabbed or tabless resonators can be provided for soldering directly to the circuit board. Integrated Microwave offers a choice of nine resonator sizes and five material types to meet virtually any resonator requirement in the 200 MHz to 10 GHz range. These resonators are pretuned to your specified frequency with a choice of tolerances.

Integrated Microwave resonators are made in our facility in San Diego, California. In-house control of the fabrication ensures optimum electrical performance and reliability. Integrated Microwave's proprietary metalization system produces the highest possible Q, exceptional solderability, and the strongest metalization adhesion in the industry.  Resonator frequency is 100% tested using ATE to ensure that customer specifications are met.


  • Rugged, thermally stable ceramics
  • Nine sizes to choose from: 2, 3, 4, 5, 6, 8, 10, 12, and 18mm
  • Five dielectric constants: 8, 13, 20, 36 and 98
  • Frequency: 200MHz to 10GHz
  • Thick film silver coating for excellent Q and solderability
  • Superior silver adhesion – pull strengths greater than 20 pounds
  • Standard frequency tolerance is 1.0%; tighter tolerances available
  • SMT tabs or tabless configurations available for each size resonator
  • Barrier layer metallizations available
  • RoHS Compliant


  • Dielectric resonating oscillators (DRO)
  • Voltage controlled oscillators (VCO)
  • Pagers
  • Global positioning systems (GPS)
  • Cellular and wireless communications
  • Bandpass/bandstop filters
  • Narrowband/delay filters
  • EMI filtering

Resonator and Tab Configurations

Tabless Surface Mount Coaxial Resonators

Integrated Microwave resonators are also available in tabless configuration. This technology represents a significant advance in reliability and accuracy, compared with traditional metal-tabbed resonators. The large solder pad eliminates misalignment and tab solder reflow problems, ensuring optimum performance.


  • No metal tabs
  • Large solder pad
  • No tab solder reflow problems
  • No tab misalignment
  • Higher Q


Resonator Part Numbering System

Typical Resonator Impedance (ohms)