16454A Datasheet, PDF (4/7 Pages) Keysight Technologies – Measuring Dielectric Properties Using Keysight’s Materials Measurement Solutions

04 | Keysight | Measuring Dielectric Properties Using Keysight’s Materials Measurement Solutions - Brochure
Resonant cavity method
Resonant cavities are high Q structures that resonate at certain frequencies. A sample
of the material affects the center frequency and Q factor of the cavity. The permittivity
can be calculated from these parameters. Keysight offers 85072A 10 GHz split cylinder
resonator, as well as Split post dielectric resonators (SPDR).
Parallel plate capacitor method
The parallel plate capacitor method involves sandwiching a thin sheet of material be-
tween two electrodes to form a capacitor. The method works best for accurate, low fre-
quency measurements of thin sheets or liquids. A typical measurement system using the
parallel plate method consists of an LCR meter or impedance analyzer. Keysight offers
several test fixtures such as 16451B, 16452A and 16543A depending on material types
and applied frequency ranges that can cover up to 1 GHz.
Inductance measurement method
This method derives the permeability by measuring the inductance of the material (to-
roidal core). The concept is to wind some wire around MUT and evaluate the inductance
with respect to the ends of the wire. The Keysight 16454A magnetic material test fixture
provides an ideal structure for single-turn inductor, with no flux leakage when a toroidal
core is inserted in it.
Keysight N1501A dielectric probe kit