Part 7. High Q Ferrite Single Crystal Resonators & YIG Spheres

p701

Spherical Ferrite monocrystalline resonators have a high Q-factor, independent of resonance frequency geometry and can be tuned over a wide frequency range (octave - multioctave).

The ferromagnetic resonators with garnet crystallographic structures are produced from monocrystalline materials.
Diameter of spheres are from 0.25 to 1.1 mm.

 

Used in Microwave devices such as

Bandpass band-rejection filters

Harmonic converters

Broadband frequency generators

Features:

narrow linewidth

high temperature stability deviation is no more than 50 kHz/°C

non-oriented (without rod)

high time stability of parameters

 

Type

Operating frequency range
GHz

Saturation magnetization
4πMs
Gauss

Minimum linewidth
ΔH
Oe

Measuring frequency
GHz

Curie temperature
Tc
°C

8KG

0.4-0.7

90

0.5

0.5

100

12KG

0.6-1.0

140

0.5

0.7

120

15KG

0.8-1.5

200

0.4

1

140

25KG

1.2-2.0

300

0.4

1

150

30KG

1.35-4.0

360

0.3

1.5

155

35KG

1.6-5.0

430

0.3

1.5

170

50KG

2.2-9.0

620

0.4

2

220

65KG

2.9-18.0

820

0.4

3

160

140KG

6.0-37.0

1750

0.4

9

280