Microwave Materials - Support
/ Substrate Materials
D6 Material
This is a low permittivity material that is used
predominantly for supports for dielectric resonators however it can be used effectively for substrate
applications and also for GPS patch antenna applications.
The material is available in various forms, either as a solid disc or as a cylindrical support.
This material is mainly recommended for use as a support in applications where the frequency ranges
from 3 GHz to 20 GHz.
 = 6.5±0.5
Tan d
= 0.002
D9 Material
A high purity (99.5%) Alumina ceramic material ideal for
demanding low loss applications, such as Base Station Filters.
This material has a relatively low  , which will have
minimal interference with the fundamental resonant frequency of the resonator.
This material also has a high thermal conductivity for a ceramic material allowing thermal energy to be
dissipated from within the cavity.
These combined properties, together with good electrical loss performance, offer a material which is
ideally suited for resonator supports.
Supports in D9 material are typically used with resonators at frequencies from 850 MHz to 3 GHz
= 9.8±0.5
Tan d
= 0.0001
Thermal Conductivity = 25.6 Wm-1K-1
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