CERAMIC COAXIAL RESONATORS
General characteristics
GENERAL CHARACTERISTICS
DIMENSIONS AND CONFIGURATIONS
The TEMEX coaxial resonators are available over a frequency range of 300 MHz to 6 GHz with four
preferred square cross section sizes, having side length of 2, 4, 6 and 12 mm.
Other square section dimensions 3, 8 and 10 mm (S) information can be obtained upon request.
summarizes the choice of sizes and dielectric materials available.
The length of the component (L) can be determined from the chosen frequency (F) and dielectric
constant (εr) as follows:
(λ/4 application)
L=
λo
4
√ εr
(λ/2 application)
L=
λo
2
√ εr
λo
in mm
L in mm
F in GHz
with
λo
=
300
F
A simplified formula for
λ
/4 applications:
εr
= 21
εr
= 37
εr
= 90
L=
L=
L=
16.37
F
12.3
F
7.9
F
IMPEDANCE Z
The coaxial resonator impedance used in TEM mode is a direct function of its dimensions
and of the dielectric material permittivity.
indicates for each standard side length, and for each dielectric constant, the impedance value,
independent of the resonator length
3-2
Vol. 1
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