电子与封装2025，Vol.25Issue(10)：78-82,5.DOI:10.16257/j.cnki.1681-1070.2025.0123
一种基于LTCC技术的低频小尺寸3dB电桥
Low-Frequency Small-Sized 3 dB Bridge Based on LTCC Technology
摘要
Abstract
The 3 dB bridge is widely used in communication systems for microwave signal synthesis and distribution.To meet demands for miniaturization and low-frequency applications,a low-frequency and compact bridge was developed using low-temperature co-fired ceramic technology.3 dB coupling is achieved by a broadside coupling structure,with the standing wave ratio and isolation balanced by line width adjustments.Miniaturization is accomplished through spiral and 3D wire-winding structures.A coupled line-to-ground structure is introduced to further lower the operating frequency.The device is packaged in a standard 1206 package.Measured results demonstrate good agreement with simulations,exhibiting a passband from 330 MHz to 580 MHz,with a standing wave ratio ≤ 1.5,an isolation ≥17.9 dB,an amplitude imbalance ≤1.2 dB,and a phase imbalance ≤5°.关键词
3dB电桥/LTCC/低频/宽边耦合Key words
3 dB bridge/LTCC/low-frequency/broadside coupling structure分类
信息技术与安全科学引用本文复制引用
马涛,王慷,聂梦文,潘园园..一种基于LTCC技术的低频小尺寸3dB电桥[J].电子与封装,2025,25(10):78-82,5.基金项目
安徽省科技攻坚计划项目(202423i08050005) （202423i08050005）
