Product Description

Microwave Ferrite Technology, Inc.

Leading Manufacturer of Microwave Ferrite Materials in China

We specialize in microwave ferrite materials for the wireless industry, offering a range of products from high-volume garnets for wireless infrastructure to specialized materials for radar applications.

Application Range

Our materials are suited for devices operating:

• Above resonance: 100 MHz to 3 GHz

• Below resonance: 1 GHz to 40 GHz or more

• High-power applications and phase-shifting applications

Ferrites & Magnetic Materials

Our product line includes:

• Narrow Linewidth Ferrites

• Aluminum & Aluminum-Gadolinium Substituted Garnets

• Gadolinium Substituted Garnets

• Cobalt & Holmium Doped Garnets

• Magnesium Spinels

• Nickel Spinels

• Lithium Spinels

• YIG Film on GGG Substrate

• Permanent Magnets

Material Characteristics

High-frequency microwave ferrites exhibit:

1. High electrical resistivity (>10 6 Ω·cm) → Low dielectric losses

2. Dielectric permittivity (ε’ ≈ 10–15)

3. Thermal stability across a wide temperature range

4. High activity, defined by minimal bias requirements

5. Saturation magnetization (4πMs = 400–5000 Gs)

6. Narrow resonance linewidth (YIG monocrystals: 2ΔH = 0.3–0.5 Oe; polycrystalline ferrites: 2ΔH = 3–40 to 800–1000 Oe)

Shapes & Configurations

We produce microwave ferrites and ceramics using pressed powder sintered at high temperatures, followed by smoothing and polishing. Standard shapes include:

Material Base

We manufacture ferrites and ceramics based on garnet & spinel structures, including:

Garnet-Based Materials

Yttrium Iron Garnets (YIG) are widely used due to their:

• Narrow ferromagnetic resonance absorption linewidth

• Low magnetic losses & high magnetization

• High thermal stability

• Enhanced power stability via Cobalt & Rare-earth ion (Dy, Gd) doping

Spinel-Based Materials

• Magnesium Spinel → Low coercive field strength, low dielectric losses (ideal for applications away from resonance)

• Nickel Spinel → High magnetization range, excellent thermal stability (optimal for applications near resonance)

• Lithium Spinel → Used in discrete phase shifters, featuring low coercive field strength & high saturation magnetization

Quality Control & Advantages

• Expert-led quality control team ensuring high standards

• Every ferrite magnet undergoes rigorous testing before sale

• Designed for isolators & circulators used in radio-communication systems

• Low ΔH (deltaH) values minimize IMD in applications

By combining ferrites with dielectric materials, we miniaturize isolator/circulator designs, achieving optimal performance.

Surface Treatments

We offer a variety of protective coatings, including:

• Ni-Cu-Ni, Zn, Au, Ag, Sn, Ti, TiN, Cr

• Customized surface treatments tailored to client requirements

Maintenance Guidelines

To prevent rust and performance degradation, avoid exposure to:

1. Acid or Alkali Liquor

2. Organic Solvent

3. Electrolytes

4. Water or Oil

5. Hydrogen

6. Active gases (Chlorine, Ammonia, Oxynitride)

7. Radiation or Radioactive Rays

Applications

• Garnet & Spinel Ferrites → Space/Defense/Telecommunications

• Ferrite-Dielectric Assembly → Telecommunications

Microwave Ferrite Material Series

• Li Ferrite → Low loss, high temperature stability, high dielectric coefficient

• Ni Ferrite → Well temperature stability, small ferromagnetic resonance linewidth, high spin-wave width

• Ni High-Power Ferrite → Low loss, excellent surface density & compactness

• General Garnet Ferrite → Low losses, high temperature stability, superior compatibility

• Narrow Linewidth Garnet → Small resonance linewidth, excellent thermal stability

• High Power & Low Temp-Co Garnet → Withstands high peak power

• Microwave High-Q Ferrite Resonator → Stable parameter control, no static wave oscillation

Contact Information

For further details, reach out to:

E-mail: magnet886(AT)gmail.com

WhatsApp: +86I58674O8815

Website:www.microwaveferrite.com