A5091947288- Microwave Dielectric Ceramics Synthesis
- Ferroelectric and Piezoelectric Materials
- Dielectric properties of ceramics
- Silicon Carbide Semiconductor Technologies
- GaN-based semiconductor devices and materials
- Microwave Engineering and Waveguides
- Multiferroics and related materials
- Acoustic Wave Resonator Technologies
- Advancements in Semiconductor Devices and Circuit Design
- Semiconductor Quantum Structures and Devices
- Advanced ceramic materials synthesis
- Ga2O3 and related materials
Peking University
2024
Xi'an Jiaotong University
2023-2024
In developing low-temperature cofired ceramic (LTCC) technology for high-density packaging or advanced packaged electronics, matching the coefficient of thermal expansion (CTE) among components is a critical challenge to improve reliability. The CTEs solders and organic laminates are usually larger than 16.0 ppm °C1-, while most low-permittivity (εr) dielectric ceramics have less 10.0 °C1-. Therefore, good CTE match between required further LTCC applications. this paper, we propose high-CTE...
The β-Ga 2 O 3 ceramic exhibits excellent dielectric properties with a Q × f of 133 140 GHz and ε r 9.57. A sub-6 patch antenna was designed fabricated using Ga substrate, showing great potential for high-frequency applications.
The effects of complex-ion (Zn 1/3 Nb 2/3 ) 4+ substitutions on the crystal structure, microstructure and microwave dielectric properties Ca(Zr 0.95 Ti 0.05 )O 3 were shown.
ABSTRACT Low‐ε r (the low dielectric constant) microwave ceramics play an important role in sub‐6 GHz band communication by virtue of their small signal delay. In this paper, Ba 2 CoSi O 7 were synthesized the solid‐phase reaction method, and X‐ray diffraction (XRD) confirms that they belong to a new melilite structure, with C 2/ c (No.15) space group, have good properties ε ∼ 7.37, Q × f ( = 1/dielectric loss, resonant frequency) 26,320 TCF temperature coefficient −55 ppm/°C after being...
The employment of ultra-low permittivity materials in the configuration antennas has been demonstrated to augment antenna bandwidth and diminish signal delay effectively. This study presents three metaphosphate microwave dielectric ceramics (MWDCs). ALaP4O12 (A = Li, Na, K) ceramics, which all belong monoclinic crystal system, exhibit extremely low (εr ≈ 5) excellent quality factor (Q·f > 10,000 GHz) at a sintering temperature (T < 950 °C). Terahertz time-domain spectroscopy indicates that...