A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Low-loss substrate material for high-frequency LTCC transformer and preparation method of low-loss substrate material
For an LTCC (Low Temperature Co-Fired Ceramic) transformer, the conversion efficiency of the LTCC transformer is a crucial index, and in order to reduce the overall loss, a material with low power loss must be selected to manufacture a substrate. The invention provides a low-loss substrate material for a high-frequency LTCC transformer and a preparation method of the low-loss substrate material. According to the invention, low-temperature sintering of the ferrite is realized at 920 DEG C by adding Bi2O3, and the YIG gyromagnetic ferrite powder is added during secondary ball milling, so that the overall resistivity is improved, a magnetic grain boundary is formed, and finally, the ferrite material with high magnetic conductivity and low power loss, of which the initial magnetic conductivity is 204, the saturation flux density is 408mT and the power loss is 53kW/m < 3 >, is prepared. According to the invention, high magnetic conductivity and low power loss of the power ferrite material can be realized, and a basis is provided for further miniaturization of ferrite devices such as a high-frequency LTCC transformer and a high-frequency DC/DC switch.
对于LTCC变压器来说，它的转换效率是一个至关重要的指标，为了降低整体损耗，就必须选择低功率损耗的材料来制作基板。本发明提供一种高频LTCC变压器用低损耗基板材料及其制备方法。本发明通过加入Bi2O3在920℃实现铁氧体的低温烧结，并通过二次球磨时加入YIG旋磁铁氧体粉末，提高整体电阻率并形成磁性晶界，最终制备出初始磁导率为204，饱和磁感应强度为408mT，功率损耗为53kW/m3的高磁导率低功率损耗的铁氧体材料。本发明使功率铁氧体材料高磁导率和低功率损耗的兼具成为可能，为高频LTCC变压器及高频DC/DC开关等铁氧体器件的进一步小型化提供了基础。
Low-loss substrate material for high-frequency LTCC transformer and preparation method of low-loss substrate material
For an LTCC (Low Temperature Co-Fired Ceramic) transformer, the conversion efficiency of the LTCC transformer is a crucial index, and in order to reduce the overall loss, a material with low power loss must be selected to manufacture a substrate. The invention provides a low-loss substrate material for a high-frequency LTCC transformer and a preparation method of the low-loss substrate material. According to the invention, low-temperature sintering of the ferrite is realized at 920 DEG C by adding Bi2O3, and the YIG gyromagnetic ferrite powder is added during secondary ball milling, so that the overall resistivity is improved, a magnetic grain boundary is formed, and finally, the ferrite material with high magnetic conductivity and low power loss, of which the initial magnetic conductivity is 204, the saturation flux density is 408mT and the power loss is 53kW/m < 3 >, is prepared. According to the invention, high magnetic conductivity and low power loss of the power ferrite material can be realized, and a basis is provided for further miniaturization of ferrite devices such as a high-frequency LTCC transformer and a high-frequency DC/DC switch.
对于LTCC变压器来说，它的转换效率是一个至关重要的指标，为了降低整体损耗，就必须选择低功率损耗的材料来制作基板。本发明提供一种高频LTCC变压器用低损耗基板材料及其制备方法。本发明通过加入Bi2O3在920℃实现铁氧体的低温烧结，并通过二次球磨时加入YIG旋磁铁氧体粉末，提高整体电阻率并形成磁性晶界，最终制备出初始磁导率为204，饱和磁感应强度为408mT，功率损耗为53kW/m3的高磁导率低功率损耗的铁氧体材料。本发明使功率铁氧体材料高磁导率和低功率损耗的兼具成为可能，为高频LTCC变压器及高频DC/DC开关等铁氧体器件的进一步小型化提供了基础。
Low-loss substrate material for high-frequency LTCC transformer and preparation method of low-loss substrate material
一种高频LTCC变压器用低损耗基板材料及其制备方法
XIA BAOGUANG (author) / LIAO YULONG (author) / XIANG QUANJUN (author) / QIAO LIANG (author)
2024-02-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
LTCC raw material tape material, LTCC substrate and preparation method
| European Patent Office | 2023
LTCC raw material tape material, LTCC substrate and preparation method
| European Patent Office | 2022
Low-dielectric low-high-frequency-loss LTCC material and preparation method thereof
| European Patent Office | 2021
LTCC substrate sacrificial material, preparation method and application thereof
| European Patent Office | 2022