Ceramic coaxial resonators improve circuit Q

Frequency products specialist Euroquartz has introduced new ceramic coaxial resonators that are ideal for use in a broad range of applications.

Frequency products specialist Euroquartz has introduced new ceramic coaxial resonators that are ideal for use in a broad range of applications.

Euroquartz's new coaxial ceramic resonators deliver a range of benefits including miniaturisation of circuitry, improved circuit Q and low long-term frequency drift.

Additional characteristics include low temperature drift and low ageing drift.

These quarter-wavelength devices can be supplied with resonant frequency from 400MHz to 3GHz and there are currently five different side lengths available: 3, 4, 5, 6 and 10mm.

Custom devices can also be supplied to special order.

The versatile resonators are suitable for use in an extremely wide range of applications.

These include VCO oscillators, UHF (LC) coupled amplifiers, UHF tuned potential amplifiers, tuned oscillators, cellular telephones, mobile radios, portable radios, repeaters, nationwide pagers, global positioning systems, narrowband filters, duplexers, baby monitors, wireless headphone radios, wireless loudspeakers, RF thermometers, security systems and remote control units.

All resonant frequencies are developed individually according to customer requirements and resonant frequency tolerance of either +/-0.5 or +/-1.0% can be specified.

As well as featuring reduced size compared with conventional L-C circuits or microstrip construction, the new coaxial ceramic resonators also deliver superior temperature performance.

Additional features include high dielectric constant, maximum input power of 15W, temperature compensation from +2ppm/C +/-2ppm to +7ppm/C +/-4ppm and low loss silver or Ni/Sn/Pb-plated surface-mount packaging.

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